DULCOTEST sensors for free chlorine

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Product description

Reliable online measurement of free (effective) chlorine – with DULCOTEST sensors.

Free chlorine is the most important disinfectant in the world. This term is used to refer to the compounds Cl₂ (elementary chlorine), HOCl (hypochlorous acid) and OCl^- (hypochlorite).

Our product line of DULCOTEST sensors for free chlorine provides five product ranges optimised for different applications. Each product range consists of several types with different measuring ranges.

The proven diaphragm-covered standard sensor for free chlorine CLE3 is used to monitor or control all types of clear water, for example in the disinfection of potable water. The variant CLE3.1 is especially suitable for an excess of combined chlorine, providing the most accurate results in the calculation of combined chlorine from the measurement of total chlorine and free chlorine.

Sensors CLB2 and CLB3 are easy-to-operate, low-cost chlorine sensors without a diaphragm for clear water without pollution.

Sensor CLO1 is particularly suitable for in-line electrolysis processes where unwanted compounds may be formed; sensor CLO2 is also ideal for hot water disinfection.

Sensor CBR1 can be used in contaminated water, even for high pH values of up to 9.5, for example in the disinfection of cooling water.

Sensor CLR1 has been optimised for the disinfection or washing of foodstuffs and tolerates contaminated water and chlorine concentrations of up to 1,000 mg/l.

Features and Benefits

Five different sensor ranges and numerous different versions deliver the following benefits: use with a wide range of water qualities (pH, salinity, temperature, chemical and contamination load), use in combination with many disinfection processes: chlorine gas, sodium hypochlorite, calcium hypochlorite, electrolysis, use in a wide measuring range of 0.01 to 1,000 mg/l.
Precise, real-time amperometric measurement for efficient process control (short response time)
Amperometric measuring eliminates interference caused by turbidity or colouration
Stable zero point
Integrated temperature compensation eliminates interference caused by influence of temperature
For sensors with diaphragm-covered measuring electrodes: reduced dependence on flow, substances in water and film-forming media. Diaphragm-covered measuring electrodes embedded in an electrolyte ensure long service life. This maintains optimum measuring conditions regardless of process conditions. Low-cost maintenance thanks to easy diaphragm cap changes.

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Field of application

The following list is a general representation of basically suitable applications for this product. Please contact your personal representative to discuss the use of the product in your individual application.

Chlorine measurement in potable, swimming pool, cooling, industrial, process, rinsing and waste water as well as seawater and salt water

Swimming Pool Water Treatment

Modern water treatment and disinfection processes enhance swimming enjoyment

The use of metering technology and water treatment solutions may vary considerably depending on the industry and application. Rely on our decades of experience and know-how to find the safest and most efficient solution for you.

Potable Water Treatment

Outstanding water quality in line with global WHO standards

ProMinent turns water into hygienically perfect potable water – with powerful systems and components, which can be ready mounted for operation or individually configured.

Disinfection of Potable Water

Germ-free potable water thanks to disinfection

As an essential nutrient, water must satisfy very strict quality controls. ProMinent offers sophisticated disinfection technology that reliably removes viruses, bacteria and microorganisms.

Cooling Water Treatment

Efficiency is everything in the cooling water circuit

Everything at ProMinent revolves around the perfect cooling water circuit, which needs to experience few losses over its long life. The precise metering of inhibitors and biocides and suitable filters make this possible.

Utility Water Treatment

It makes economic sense to reuse process water.

Why would you discharge water just because you've used it once? If this water is treated properly, it can be reused with ease, cutting costs in no time.

Waste Water Treatment

Very low-impact treatment for waste water

Our water treatment technology delivers thorough yet environmentally friendly waste water treatment. What's more, with precisely metered additives and optimised processes, you also save money.

Cleaning fruit and vegetables

Simple and reliable cleaning process for agricultural products

Fresh fruit and veg are an essential part of our diet. So it's very important for them to reach the consumer in a safe condition. Precise metering of chlorine dioxide ensures that this is the case.

Technical Details

Free chlorine (hypochlorous acid HOCl)

CLE 3; pH: 5.5 … 8.0; Temp. 41 … 113 °F (5 … 45 °C)
CLE3.1; pH: 5.5 … 8.0; Temp. 41 … 113 °F (5 … 45 °C)
CLO 1; pH: 5.0 … 9.0; Temp. 41 … 113 °F (5 … 45 °C)
CLO 2; pH: 5.0 … 9.0; Temp. 41 … 158 °F (5 … 70 °C)
CLB1; pH: 5.0 … 9.0; Temp. 41 … 113 °F (5 … 45 °C)
CLB2; pH: 5.0 … 9.0; Temp. 41 … 113 °F (5 … 45 °C)
CBR 1; pH: 5.0 … 9.5; Temp. 41 … 113 °F (5 … 45 °C)
CLR 1; pH: 5.5 … 8.0; Temp. 41 … 113 °F (5 … 45 °C)

Sensor for Free Chlorine CLE 3-mA

Standard sensor for measuring free chlorine in clear water. For operation on controllers with 4-20 mA input

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water

Measured variable	Free chlorine with a pH value < 8
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine, even if there is not an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	CLE 3-mA-0,5 ppm: potable water; CLE 3-mA-2.0/10 ppm: swimming pools (surfactant-free).
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3-mA-0.5 ppm	0.01…0.5 mg/l	792927
CLE 3-mA-2 ppm	0.02…2.0 mg/l	792920
CLE 3-mA-5 ppm	0.05…5.0 mg/l	1033392
CLE 3-mA-10 ppm	0.10…10.0 mg/l	792919
CLE 3-mA-20 ppm	0.20…20.0 mg/l	1002964
CLE 3-mA-50 ppm	0.50…50.0 mg/l	1020531
CLE 3-mA-100 ppm	1.00…100.0 mg/l	1022786

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for Free Chlorine CLE 3.1-mA

Sensor for the measurement of free chlorine in clear water with higher selectivity towards combined chlorine. For use on controllers with 4-20 mA input

Your Benefits

Measured variable: free chlorine, no cross-sensitivity to combined chlorine (chloramines), even if there is an excess of it
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water

Measured variable	Free chlorine (hypochlorous acid HOCl) with high levels of combined chlorine; for determining the combined chlorine with a DAC controller and sensor for total chlorine type CTE 1-mA
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine, even if there is an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C
Typical applications	Potable water with higher volumes of combined chlorine, swimming pools. To determine the combined chlorine from the difference: Total chlorine minus free chlorine in the controller DAC.
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3.1-mA-0.5 ppm	0.01…0.5 mg/l	1020530
CLE 3.1-mA-2 ppm	0.02…2.0 mg/l	1018369
CLE 3.1-mA-5 ppm	0.05…5.0 mg/l	1019398
CLE 3.1-mA-10 ppm	0.10…10.0 mg/l	1018368

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for Free Chlorine CLE 3-DMT

Standard sensor for measuring free chlorine in clear water. For operation on ProMinent transmitters type DMT

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	3.3 V DC (5 P)
Output signal	0…1 V DC, uncalibrated, not temperature-compensated, not electrically isolated
Temperature measurement	About the integrated Pt 1000. The temperature compensation is carried out in DMT.
Selectivity	Free chlorine as against combined chlorine, even if there is not an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DMT
Typical applications	CLE 3-mA-0,5 ppm: potable water; CLE 3-mA-2.0/10 ppm: swimming pools (surfactant-free).
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3-DMT-5 ppm	0.01…5.0 mg/l	1005511
CLE 3-DMT-50 ppm	0.10…50.0 mg/l	1005512

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for free chlorine CLE 3-CAN

Standard sensor for measuring free chlorine in clear water. For use on controllers with CAN-bus connection

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water
Operation on the CAN-bus with all the associated benefits

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Via CAN-interface (11 – 30 V)
Output signal	Uncalibrated, temperature compensated, electrically isolated
Selectivity	Free chlorine as against combined chlorine, even if there is not an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DULCOMARIN
Typical applications	CLE 3-mA-0,5 ppm: potable water; CLE 3-mA-2.0/10 ppm: swimming pools (surfactant-free).
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3-CAN-10 ppm	0.01…10.0 mg/l	1023425

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for free chlorine CLE 3.1-CAN

Sensor for the measurement of free chlorine in clear water with higher selectivity towards combined chlorine. For use on controllers with CAN-bus connection

Your Benefits

Measured variable: free chlorine, no cross-sensitivity to combined chlorine (chloramines) even if there is an excess of it
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water
Operation on the CAN-bus with all the associated benefits

Measured variable	Free chlorine with high levels of combined chlorine; for determining the combined chlorine with a DULCOMARIN and sensor for total chlorine type CTE 1-CAN
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Via CAN-interface (11 – 30 V)
Output signal	Uncalibrated, temperature compensated, electrically isolated
Selectivity	free chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DULCOMARIN
Typical applications	Drinking water with higher levels of combined chlorine; swimming pool. To determine the combined chlorine from the difference: Total chlorine minus free chlorine in the controller DULCOMARIN.
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3.1-CAN-10 ppm	0.01…10.0 mg/l	1023426

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for Free Chlorine CLO 1-mA

Sensor for the measurement of free chlorine in clear water even when using electrolysis processes for disinfection, up to 113 °F (45 °C) (14 psi) or 116 psi (77 °F/25 °C). For operation with controllers with 4-20 mA input. Also suitable for use in film-forming water with optional “hydrodynamic cleaning”.

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Use when sample water is returned to the process line
Use at higher pressures
Minimisation of faults by electrolysis systems in which the electrodes are immersed directly into the sample water (without diaphragm) by an open sensor (no diaphragm) and gold electrodes
Measurement of free chlorine up to pH 9
Also suitable for use in film-forming water with optional "hydrodynamic cleaning".

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	116 psi (77 °F / 25 °C)
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the tubes with the INLI fitting
Sensor fitting	BAMa: up to 101 psi (68 °F / 20 °C) DGMa up to 87 psi (86 °F / 30 °C) DLG III up to 14 psi (131 °F / 55 °C) INLI up to 101 psi (104 °F / 40 °C)
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	Swimming pools, uncontaminated potable water and process water, and can also be used together with diaphragm-free electrolysis processes. Can also be used in conjunction with hydrodynamic cleaning even in biofilm-forming water, or water containing lime, iron or manganese.
Resistance to	Surfactants, films with using hydrodynamic cleaning
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLO 1-mA-2 ppm	0.02…2.0 mg/l	1131658
CLO 1-mA-10 ppm	0.10…10.0 mg/l	1131662

Sensor for free chlorine CLO 1-CAN

Sensor for the measurement of free chlorine in clear water even when using electrolysis processes for disinfection, up to 113 °F (45 °C) (14 psi) or 116 psi (77 °F/25 °C). For use on controllers with CAN-bus connection. Also suitable for use in film-forming water with optional “hydrodynamic cleaning”.

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Use with return of the sample water to the process line
Use at higher pressures
Minimisation of faults by electrolysis systems in which the electrodes are immersed directly into the sample water (without diaphragm) by open sensor (no diaphragm) and gold electrodes
Measurement of free chlorine up to pH 9
Also suitable for use in film-forming water with optional “hydrodynamic cleaning”.

Measured variable	Free chlorine
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	116 psi (77 °F / 25 °C)
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	11…30 V (via CAN interface)
Output signal	Digital (CANopen), uncalibrated, temperature-compensated, electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the tubes with the INLI fitting
Sensor fitting	BAMa: up to 101 psi (68 °F / 20 °C) DGMa up to 87 psi (86 °F / 30 °C) DLG III up to 14 psi (131 °F / 55 °C) INLI up to 101 psi (104 °F / 40 °C)
Controllers	DULCOMARIN 3, DULCOMARIN II only with hardware after 06.02.2014 from software version 3035 or later
Typical applications	Swimming pools, uncontaminated potable water and process water, and can also be used together with diaphragm-free electrolysis processes. Can also be used in conjunction with hydrodynamic cleaning even in water that forms biofilms, or containing lime, iron or manganese.
Resistance to	Salts, acids, lyes, surfactants, films of dirt, films when using hydrodynamic cleaning
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLO 1-CAN-10 ppm	0.10…10.0 mg/l	1122057

Sensor for Free Chlorine CLO 2-mA

Sensor for the measurement of free chlorine in clear water even when using electrolysis processes for disinfection, up to 158 °F (70 °C) or 116 psi (77 °F/25 °C). For operation with controllers with 4-20 mA input. Also suitable for use in film-forming water with optional “hydrodynamic cleaning”.

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Use when sample water is returned to the process line
Use at higher pressures/temperatures
Minimisation of faults by electrolysis systems in which the electrodes are immersed directly into the sample water (without diaphragm) by an open sensor (no diaphragm) and gold electrodes
Measurement of free chlorine up to pH 9
Also suitable for use in film-forming water with optional "hydrodynamic cleaning"

Measured variable	Free chlorine
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…158 °F (5…70 °C)
Max. pressure	116 psi (77 °F / 25 °C)
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the tubes with the INLI fitting
Sensor fitting	BAMa: up to 43 psi (158 °F / 70 °C) DGMa up to 14 psi (140 °F / 60 °C) DLG III up to 14 psi (131 °F / 55 °C) INLI up to 29 psi (158 °F / 70 °C)
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	Hot water up to 158 °F (70 °C), combating legionella, uncontaminated potable water and industrial service water, can also be used together with diaphragm-free electrolysis processes.
Resistance to	Surfactants, films with using hydrodynamic cleaning
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLO 2-mA-2 ppm	0.02…2.0 mg/l	1131644

Sensor for Free Chlorine CLB 2-µA

Cost-effective, simple sensor for the measurement of free chlorine in clear water, even with a changing media temperature. Use even when electrolysis processes are used for disinfection at up to 113 °F/43 psi (45 °C/3 bar). For operation with the Compact controller DCCa

Your Benefits

Measured variable: free chlorine, no significant cross sensitivity to combined chlorine (chloramines)
Cost-effective due to its simple construction without separate wear parts
Simple, cost-effective maintenance without handling of the diaphragm caps
Minimisation of faults by electrolysis systems without diaphragm in which the electrodes are immersed directly into the sample water by an open sensor (no diaphragm)
Measurement of free chlorine up to pH 9 and use at high pressure of up to 116 psi by the absence of a diaphragm

Measured variable	free chlorine
Measuring range	0.05 – 5.0 mg/l, can be used for short-term shock chlorination up to 10 mg/l
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	44 psi
Flow	DGMa, DLG III: 15.85 ... 21.13 gph (60 ... 80 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Only for compact controllers
Output signal	Non-amplified primary current signal, not temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open sample water outlet, inline: direct installation into the pipework
Sensor fitting	BAMa, DGMa, DLG III
Controllers	Compact controller
Typical applications	Swimming pools, potable water, can also be used with membrane-free chlorine production electrolysis processes, even with varying media temperatures.
Resistance to	surfactants
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLB 2-µA-5 ppm	0.05…5.0 mg/l	1130517

Sensor for Free Chlorine CLB 3-µA

Cost-effective, simple sensor for the measurement of free chlorine in clear water when the media temperature is constant. Use even when electrolysis processes are used for disinfection at up to 113 °F/43 psi (45 °C/3 bar). For operation with the Compact controller DCCa

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Cost-effective due to its simple construction without separate wear parts
Simple, cost-effective maintenance without handling of the diaphragm caps
Minimisation of faults by electrolysis systems without diaphragm in which the electrodes are immersed directly into the sample water by an open sensor (no diaphragm)
Measurement of free chlorine up to pH 9 and use at high pressure of up to 116 psi thanks to the absence of a diaphragm
Suitable for sea water

Measured variable	free chlorine
Measuring range	0.05 - 5.0 mg/l: linear, can be used for shock chlorination up to 10.0 mg/l
Reference method	DPD1
pH-range	5.0…9.0
Electrolytic conductivity	0.05...50 mS/cm
Temperature	41…113 °F (5…45 °C)
Max. pressure	44 psi
Flow	DGMa, DLG III: 15.85 ... 21.13 gph (60 ... 80 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Only for compact controllers
Output signal	Non-amplified primary current signal, not temperature-compensated, uncalibrated, not electrically isolated
Temperature measurement	None
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open sample water outlet, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting)
Sensor fitting	BAMa, DGMa, DLG III
Electrical Connection	Fixed cable, 3.3 ft, 4 wires with cable end sleeves
Controllers	Compact controller
Typical applications	Swimming pools, potable water, sea water; also suitable for use with diaphragm-free electrolysis processes for chlorine generation.
Resistance to	surfactants
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLB 3-µA-5 ppm	0.05…5.0 mg/l	1104626

Sensor for Free Chlorine CBR 1-mA

Sensor for free chlorine and bromine in contaminated water, also suitable for high pH values of up to 9.5. For use with controllers with 4-20 mA input

Your Benefits

Measured variable: free chlorine as well as free and combined bromine (bromamines)
Diaphragm-covered sensor minimises faults caused by changing flow or ingredients in the water
Resistance to films of dirt and biofilms by electrolyte with antimicrobial effect and large-pore diaphragm
Use at high pH value of up to 9.5 by optimisation of the electrolyte diaphragm system

Measured variable	free chlorine, free bromine, combined bromine, DBDMH (1,3-dibrom-5,5-dimethyl-hydantoin)
Reference method	DPD1
pH-range	5…9.5
Temperature	34…104 °F (1…40 °C)
Max. pressure	15 psi
Flow	DGMa: 5.28 ... 21.13 gph (20 ... 80 l/h) DLG III: 10.57 ... 26.42 gph (40 ... 100 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, bromide + hypochlorite, DBDMH
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	Cooling water, process water, waste water, water with higher pH values (stable pH), contaminated swimming pool water. Contaminated swimming pool water. In swimming pools to determine the combined chlorine from the difference: Total chlorine minus free chlorine. Raw water for drinking water treatment.
Resistance to	Salts, acids, alkalis, surfactants, dirt films
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
* Measuring range based on chlorine. When measuring bromine, the lower and upper limit of the measuring range are increased by the factor 2.25, therefore for example CBR 1-mA-0.5ppm: 0.02 ...1.1 ppm.
CBR 1-mA-0.5 ppm	0.01…0.5 mg/l *	1038016
CBR 1-mA-2 ppm	0.02…2.0 mg/l *	1038015
CBR 1-mA-5 ppm	0.05…5.0 mg/l *	1052138
CBR 1-mA-10 ppm	0.10…10.0 mg/l *	1038014

Sensor for free and combined bromine CBR 1-CAN

Sensor for free chlorine and bromine in contaminated water, also suitable for high pH values of up to 9.5. For use on controllers with CAN-bus connection.

Your Benefits

Measured variable: free chlorine as well as free and combined bromine (bromamines)
Diaphragm-covered sensor minimises faults caused by changing flow or ingredients in the water
Resistance to films of dirt and biofilms by electrolyte with antimicrobial effect and large-pore diaphragm
Use at high pH value of up to 9.5 by optimisation of the electrolyte diaphragm system

Measured variable	free chlorine, free bromine, combined bromine, DBDMH (1,3-dibrom-5,5-dimethyl-hydantoin)
Reference method	DPD1
pH-range	5…9.5
Temperature	34…104 °F (1…40 °C)
Max. pressure	15 psi
Flow	DGMa: 5.28 ... 21.13 gph (20 ... 80 l/h) DLG III: 10.57 ... 26.42 gph (40 ... 100 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	11…30 V DC (via CAN interface)
Output signal	Digital (CANopen), uncalibrated, temperature-compensated, electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, bromide + hypochlorite, DBDMH
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DULCOMARIN 3, DULCOMARIN II only with hardware after 06.02.2014 from software version 3035 or later
Typical applications	Cooling water, process water, waste water, water with higher pH values (stable pH), contaminated swimming pool water. Contaminated swimming pool water. In swimming pools to determine the combined chlorine from the difference: Total chlorine minus free chlorine. Raw water for drinking water treatment.
Resistance to	Dirt films, biofilms, surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CBR 1-CAN-10 ppm	0.01…10.0 mg/l	1122056

Sensor for Free Chlorine CLR 1-mA

Sensor for free chlorine above 10 ppm in contaminated washing water for use with controllers with 4-20 mA input

Your Benefits

Measured variable free chlorine for high concentrations of up to 1,000 ppm
Diaphragm-covered sensor prevents faults caused by changing flow or ingredients in the water
Resistance to films of dirt by pore-free diaphragm

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 10.57 ... 15.85 gph (40 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C, DAC
Typical applications	Salad, vegetable and poultry washing water, contaminated process and waste water.
Resistance to	Salts, acids, alkalis, surfactants, dirt films
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLR 1-mA-200 ppm	10.0…200 mg/l	1047978

Important note: Measuring range from 10.0 ... 1,000 mg/l on request

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Downloads for DULCOTEST sensors for free chlorine

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Overview

Reliable online measurement of free (effective) chlorine – with DULCOTEST sensors.

Free chlorine is the most important disinfectant in the world. This term is used to refer to the compounds Cl₂ (elementary chlorine), HOCl (hypochlorous acid) and OCl^- (hypochlorite).

Sensors CLB2 and CLB3 are easy-to-operate, low-cost chlorine sensors without a diaphragm for clear water without pollution.

Sensor CLO1 is particularly suitable for in-line electrolysis processes where unwanted compounds may be formed; sensor CLO2 is also ideal for hot water disinfection.

Sensor CBR1 can be used in contaminated water, even for high pH values of up to 9.5, for example in the disinfection of cooling water.

Sensor CLR1 has been optimised for the disinfection or washing of foodstuffs and tolerates contaminated water and chlorine concentrations of up to 1,000 mg/l.

Features and Benefits

Five different sensor ranges and numerous different versions deliver the following benefits: use with a wide range of water qualities (pH, salinity, temperature, chemical and contamination load), use in combination with many disinfection processes: chlorine gas, sodium hypochlorite, calcium hypochlorite, electrolysis, use in a wide measuring range of 0.01 to 1,000 mg/l.
Precise, real-time amperometric measurement for efficient process control (short response time)
Amperometric measuring eliminates interference caused by turbidity or colouration
Stable zero point
Integrated temperature compensation eliminates interference caused by influence of temperature
For sensors with diaphragm-covered measuring electrodes: reduced dependence on flow, substances in water and film-forming media. Diaphragm-covered measuring electrodes embedded in an electrolyte ensure long service life. This maintains optimum measuring conditions regardless of process conditions. Low-cost maintenance thanks to easy diaphragm cap changes.

Video

Application

Technical Data

Technical Details

Free chlorine (hypochlorous acid HOCl)

CLE 3; pH: 5.5 … 8.0; Temp. 41 … 113 °F (5 … 45 °C)
CLE3.1; pH: 5.5 … 8.0; Temp. 41 … 113 °F (5 … 45 °C)
CLO 1; pH: 5.0 … 9.0; Temp. 41 … 113 °F (5 … 45 °C)
CLO 2; pH: 5.0 … 9.0; Temp. 41 … 158 °F (5 … 70 °C)
CLB1; pH: 5.0 … 9.0; Temp. 41 … 113 °F (5 … 45 °C)
CLB2; pH: 5.0 … 9.0; Temp. 41 … 113 °F (5 … 45 °C)
CBR 1; pH: 5.0 … 9.5; Temp. 41 … 113 °F (5 … 45 °C)
CLR 1; pH: 5.5 … 8.0; Temp. 41 … 113 °F (5 … 45 °C)

Sensor for Free Chlorine CLE 3-mA

Standard sensor for measuring free chlorine in clear water. For operation on controllers with 4-20 mA input

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water

Measured variable	Free chlorine with a pH value < 8
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine, even if there is not an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	CLE 3-mA-0,5 ppm: potable water; CLE 3-mA-2.0/10 ppm: swimming pools (surfactant-free).
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3-mA-0.5 ppm	0.01…0.5 mg/l	792927
CLE 3-mA-2 ppm	0.02…2.0 mg/l	792920
CLE 3-mA-5 ppm	0.05…5.0 mg/l	1033392
CLE 3-mA-10 ppm	0.10…10.0 mg/l	792919
CLE 3-mA-20 ppm	0.20…20.0 mg/l	1002964
CLE 3-mA-50 ppm	0.50…50.0 mg/l	1020531
CLE 3-mA-100 ppm	1.00…100.0 mg/l	1022786

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for Free Chlorine CLE 3.1-mA

Sensor for the measurement of free chlorine in clear water with higher selectivity towards combined chlorine. For use on controllers with 4-20 mA input

Your Benefits

Measured variable: free chlorine, no cross-sensitivity to combined chlorine (chloramines), even if there is an excess of it
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water

Measured variable	Free chlorine (hypochlorous acid HOCl) with high levels of combined chlorine; for determining the combined chlorine with a DAC controller and sensor for total chlorine type CTE 1-mA
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine, even if there is an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C
Typical applications	Potable water with higher volumes of combined chlorine, swimming pools. To determine the combined chlorine from the difference: Total chlorine minus free chlorine in the controller DAC.
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3.1-mA-0.5 ppm	0.01…0.5 mg/l	1020530
CLE 3.1-mA-2 ppm	0.02…2.0 mg/l	1018369
CLE 3.1-mA-5 ppm	0.05…5.0 mg/l	1019398
CLE 3.1-mA-10 ppm	0.10…10.0 mg/l	1018368

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for Free Chlorine CLE 3-DMT

Standard sensor for measuring free chlorine in clear water. For operation on ProMinent transmitters type DMT

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	3.3 V DC (5 P)
Output signal	0…1 V DC, uncalibrated, not temperature-compensated, not electrically isolated
Temperature measurement	About the integrated Pt 1000. The temperature compensation is carried out in DMT.
Selectivity	Free chlorine as against combined chlorine, even if there is not an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DMT
Typical applications	CLE 3-mA-0,5 ppm: potable water; CLE 3-mA-2.0/10 ppm: swimming pools (surfactant-free).
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3-DMT-5 ppm	0.01…5.0 mg/l	1005511
CLE 3-DMT-50 ppm	0.10…50.0 mg/l	1005512

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for free chlorine CLE 3-CAN

Standard sensor for measuring free chlorine in clear water. For use on controllers with CAN-bus connection

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water
Operation on the CAN-bus with all the associated benefits

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Via CAN-interface (11 – 30 V)
Output signal	Uncalibrated, temperature compensated, electrically isolated
Selectivity	Free chlorine as against combined chlorine, even if there is not an excess of it
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DULCOMARIN
Typical applications	CLE 3-mA-0,5 ppm: potable water; CLE 3-mA-2.0/10 ppm: swimming pools (surfactant-free).
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3-CAN-10 ppm	0.01…10.0 mg/l	1023425

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for free chlorine CLE 3.1-CAN

Sensor for the measurement of free chlorine in clear water with higher selectivity towards combined chlorine. For use on controllers with CAN-bus connection

Your Benefits

Measured variable: free chlorine, no cross-sensitivity to combined chlorine (chloramines) even if there is an excess of it
Diaphragm-covered sensor (encapsulated) minimises faults caused by changing flow or substances in the water
Operation on the CAN-bus with all the associated benefits

Measured variable	Free chlorine with high levels of combined chlorine; for determining the combined chlorine with a DULCOMARIN and sensor for total chlorine type CTE 1-CAN
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Via CAN-interface (11 – 30 V)
Output signal	Uncalibrated, temperature compensated, electrically isolated
Selectivity	free chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, disinfectants with organic chlorine, e. g. based on cyanuric acid, are unsuitable
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DULCOMARIN
Typical applications	Drinking water with higher levels of combined chlorine; swimming pool. To determine the combined chlorine from the difference: Total chlorine minus free chlorine in the controller DULCOMARIN.
Resistance to	Salts, acids, alkalis. Not surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLE 3.1-CAN-10 ppm	0.01…10.0 mg/l	1023426

Chlorine sensors complete with 100 ml of electrolyte

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

Sensor for Free Chlorine CLO 1-mA

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Use when sample water is returned to the process line
Use at higher pressures
Minimisation of faults by electrolysis systems in which the electrodes are immersed directly into the sample water (without diaphragm) by an open sensor (no diaphragm) and gold electrodes
Measurement of free chlorine up to pH 9
Also suitable for use in film-forming water with optional "hydrodynamic cleaning".

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	116 psi (77 °F / 25 °C)
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the tubes with the INLI fitting
Sensor fitting	BAMa: up to 101 psi (68 °F / 20 °C) DGMa up to 87 psi (86 °F / 30 °C) DLG III up to 14 psi (131 °F / 55 °C) INLI up to 101 psi (104 °F / 40 °C)
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	Swimming pools, uncontaminated potable water and process water, and can also be used together with diaphragm-free electrolysis processes. Can also be used in conjunction with hydrodynamic cleaning even in biofilm-forming water, or water containing lime, iron or manganese.
Resistance to	Surfactants, films with using hydrodynamic cleaning
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLO 1-mA-2 ppm	0.02…2.0 mg/l	1131658
CLO 1-mA-10 ppm	0.10…10.0 mg/l	1131662

Sensor for free chlorine CLO 1-CAN

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Use with return of the sample water to the process line
Use at higher pressures
Minimisation of faults by electrolysis systems in which the electrodes are immersed directly into the sample water (without diaphragm) by open sensor (no diaphragm) and gold electrodes
Measurement of free chlorine up to pH 9
Also suitable for use in film-forming water with optional “hydrodynamic cleaning”.

Measured variable	Free chlorine
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	116 psi (77 °F / 25 °C)
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	11…30 V (via CAN interface)
Output signal	Digital (CANopen), uncalibrated, temperature-compensated, electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the tubes with the INLI fitting
Sensor fitting	BAMa: up to 101 psi (68 °F / 20 °C) DGMa up to 87 psi (86 °F / 30 °C) DLG III up to 14 psi (131 °F / 55 °C) INLI up to 101 psi (104 °F / 40 °C)
Controllers	DULCOMARIN 3, DULCOMARIN II only with hardware after 06.02.2014 from software version 3035 or later
Typical applications	Swimming pools, uncontaminated potable water and process water, and can also be used together with diaphragm-free electrolysis processes. Can also be used in conjunction with hydrodynamic cleaning even in water that forms biofilms, or containing lime, iron or manganese.
Resistance to	Salts, acids, lyes, surfactants, films of dirt, films when using hydrodynamic cleaning
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLO 1-CAN-10 ppm	0.10…10.0 mg/l	1122057

Sensor for Free Chlorine CLO 2-mA

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Use when sample water is returned to the process line
Use at higher pressures/temperatures
Minimisation of faults by electrolysis systems in which the electrodes are immersed directly into the sample water (without diaphragm) by an open sensor (no diaphragm) and gold electrodes
Measurement of free chlorine up to pH 9
Also suitable for use in film-forming water with optional "hydrodynamic cleaning"

Measured variable	Free chlorine
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…158 °F (5…70 °C)
Max. pressure	116 psi (77 °F / 25 °C)
Flow	DGMa, DLG III: 7.93 ... 15.85 gph (30 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open outlet or return of the sample water into the process line, inline: direct installation into the tubes with the INLI fitting
Sensor fitting	BAMa: up to 43 psi (158 °F / 70 °C) DGMa up to 14 psi (140 °F / 60 °C) DLG III up to 14 psi (131 °F / 55 °C) INLI up to 29 psi (158 °F / 70 °C)
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	Hot water up to 158 °F (70 °C), combating legionella, uncontaminated potable water and industrial service water, can also be used together with diaphragm-free electrolysis processes.
Resistance to	Surfactants, films with using hydrodynamic cleaning
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLO 2-mA-2 ppm	0.02…2.0 mg/l	1131644

Sensor for Free Chlorine CLB 2-µA

Your Benefits

Measured variable: free chlorine, no significant cross sensitivity to combined chlorine (chloramines)
Cost-effective due to its simple construction without separate wear parts
Simple, cost-effective maintenance without handling of the diaphragm caps
Minimisation of faults by electrolysis systems without diaphragm in which the electrodes are immersed directly into the sample water by an open sensor (no diaphragm)
Measurement of free chlorine up to pH 9 and use at high pressure of up to 116 psi by the absence of a diaphragm

Measured variable	free chlorine
Measuring range	0.05 – 5.0 mg/l, can be used for short-term shock chlorination up to 10 mg/l
Reference method	DPD1
pH-range	5.0…9.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	44 psi
Flow	DGMa, DLG III: 15.85 ... 21.13 gph (60 ... 80 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Only for compact controllers
Output signal	Non-amplified primary current signal, not temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open sample water outlet, inline: direct installation into the pipework
Sensor fitting	BAMa, DGMa, DLG III
Controllers	Compact controller
Typical applications	Swimming pools, potable water, can also be used with membrane-free chlorine production electrolysis processes, even with varying media temperatures.
Resistance to	surfactants
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLB 2-µA-5 ppm	0.05…5.0 mg/l	1130517

Sensor for Free Chlorine CLB 3-µA

Your Benefits

Measured variable: free chlorine, no significant cross-sensitivity to combined chlorine (chloramines)
Cost-effective due to its simple construction without separate wear parts
Simple, cost-effective maintenance without handling of the diaphragm caps
Minimisation of faults by electrolysis systems without diaphragm in which the electrodes are immersed directly into the sample water by an open sensor (no diaphragm)
Measurement of free chlorine up to pH 9 and use at high pressure of up to 116 psi thanks to the absence of a diaphragm
Suitable for sea water

Measured variable	free chlorine
Measuring range	0.05 - 5.0 mg/l: linear, can be used for shock chlorination up to 10.0 mg/l
Reference method	DPD1
pH-range	5.0…9.0
Electrolytic conductivity	0.05...50 mS/cm
Temperature	41…113 °F (5…45 °C)
Max. pressure	44 psi
Flow	DGMa, DLG III: 15.85 ... 21.13 gph (60 ... 80 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	Only for compact controllers
Output signal	Non-amplified primary current signal, not temperature-compensated, uncalibrated, not electrically isolated
Temperature measurement	None
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, electrolysis without diaphragm with electrodes in the process
Process integration	Bypass: open sample water outlet, inline: direct installation into the pipework; fixed or replaceable (replaceable fitting)
Sensor fitting	BAMa, DGMa, DLG III
Electrical Connection	Fixed cable, 3.3 ft, 4 wires with cable end sleeves
Controllers	Compact controller
Typical applications	Swimming pools, potable water, sea water; also suitable for use with diaphragm-free electrolysis processes for chlorine generation.
Resistance to	surfactants
Measuring principle, technology	Amperometric, 3 electrodes, no diaphragm

	Measuring range	Order no.
CLB 3-µA-5 ppm	0.05…5.0 mg/l	1104626

Sensor for Free Chlorine CBR 1-mA

Sensor for free chlorine and bromine in contaminated water, also suitable for high pH values of up to 9.5. For use with controllers with 4-20 mA input

Your Benefits

Measured variable: free chlorine as well as free and combined bromine (bromamines)
Diaphragm-covered sensor minimises faults caused by changing flow or ingredients in the water
Resistance to films of dirt and biofilms by electrolyte with antimicrobial effect and large-pore diaphragm
Use at high pH value of up to 9.5 by optimisation of the electrolyte diaphragm system

Measured variable	free chlorine, free bromine, combined bromine, DBDMH (1,3-dibrom-5,5-dimethyl-hydantoin)
Reference method	DPD1
pH-range	5…9.5
Temperature	34…104 °F (1…40 °C)
Max. pressure	15 psi
Flow	DGMa: 5.28 ... 21.13 gph (20 ... 80 l/h) DLG III: 10.57 ... 26.42 gph (40 ... 100 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, bromide + hypochlorite, DBDMH
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C, DAC, AEGIS II, AEGIS X
Typical applications	Cooling water, process water, waste water, water with higher pH values (stable pH), contaminated swimming pool water. Contaminated swimming pool water. In swimming pools to determine the combined chlorine from the difference: Total chlorine minus free chlorine. Raw water for drinking water treatment.
Resistance to	Salts, acids, alkalis, surfactants, dirt films
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
* Measuring range based on chlorine. When measuring bromine, the lower and upper limit of the measuring range are increased by the factor 2.25, therefore for example CBR 1-mA-0.5ppm: 0.02 ...1.1 ppm.
CBR 1-mA-0.5 ppm	0.01…0.5 mg/l *	1038016
CBR 1-mA-2 ppm	0.02…2.0 mg/l *	1038015
CBR 1-mA-5 ppm	0.05…5.0 mg/l *	1052138
CBR 1-mA-10 ppm	0.10…10.0 mg/l *	1038014

Sensor for free and combined bromine CBR 1-CAN

Sensor for free chlorine and bromine in contaminated water, also suitable for high pH values of up to 9.5. For use on controllers with CAN-bus connection.

Your Benefits

Measured variable: free chlorine as well as free and combined bromine (bromamines)
Diaphragm-covered sensor minimises faults caused by changing flow or ingredients in the water
Resistance to films of dirt and biofilms by electrolyte with antimicrobial effect and large-pore diaphragm
Use at high pH value of up to 9.5 by optimisation of the electrolyte diaphragm system

Measured variable	free chlorine, free bromine, combined bromine, DBDMH (1,3-dibrom-5,5-dimethyl-hydantoin)
Reference method	DPD1
pH-range	5…9.5
Temperature	34…104 °F (1…40 °C)
Max. pressure	15 psi
Flow	DGMa: 5.28 ... 21.13 gph (20 ... 80 l/h) DLG III: 10.57 ... 26.42 gph (40 ... 100 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	11…30 V DC (via CAN interface)
Output signal	Digital (CANopen), uncalibrated, temperature-compensated, electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm, bromide + hypochlorite, DBDMH
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	DULCOMARIN 3, DULCOMARIN II only with hardware after 06.02.2014 from software version 3035 or later
Typical applications	Cooling water, process water, waste water, water with higher pH values (stable pH), contaminated swimming pool water. Contaminated swimming pool water. In swimming pools to determine the combined chlorine from the difference: Total chlorine minus free chlorine. Raw water for drinking water treatment.
Resistance to	Dirt films, biofilms, surfactants
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CBR 1-CAN-10 ppm	0.01…10.0 mg/l	1122056

Sensor for Free Chlorine CLR 1-mA

Sensor for free chlorine above 10 ppm in contaminated washing water for use with controllers with 4-20 mA input

Your Benefits

Measured variable free chlorine for high concentrations of up to 1,000 ppm
Diaphragm-covered sensor prevents faults caused by changing flow or ingredients in the water
Resistance to films of dirt by pore-free diaphragm

Measured variable	free chlorine
Reference method	DPD1
pH-range	5.5…8.0
Temperature	41…113 °F (5…45 °C)
Max. pressure	15 psi
Flow	DGMa, DLG III: 10.57 ... 15.85 gph (40 ... 60 l/h) BAMa: 1.32 ... 26.42 gph (5 ... 100 l/h) (depending on design)
Supply voltage	16...24 V DC (2-wire)
Output signal	4-20 mA ≈ measuring range, temperature-compensated, uncalibrated, not electrically isolated
Selectivity	Free chlorine as against combined chlorine
Disinfection process	Chlorine gas, hypochlorite, electrolysis with diaphragm
Process integration	Bypass: open sample water outlet
Sensor fitting	BAMa, DGMa, DLG III
Controllers	D1C, DAC
Typical applications	Salad, vegetable and poultry washing water, contaminated process and waste water.
Resistance to	Salts, acids, alkalis, surfactants, dirt films
Measuring principle, technology	Amperometric, 2 electrodes, diaphragm-covered

	Measuring range	Order no.
CLR 1-mA-200 ppm	10.0…200 mg/l	1047978

Important note: Measuring range from 10.0 ... 1,000 mg/l on request

A mounting kit, order no. 815079, is required for initial fitting of the chlorine sensors in the in-line probe housing DLG III.

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