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microFLEX M2T Controller

The ProMinent microFLEX is a cooling tower/closed loop controller that combines the latest technology with an economical solution. Our breakthrough design offers a worry-free thermal flow switch that does not require any user adjustments or calibration.

Product description

Single Cooling Tower/Closed Loop Controller

The ProMinent microFLEX is a cooling tower/closed loop controller that combines the latest technology with an economical solution. Our breakthrough design offers a worry-free thermal flow switch that does not require any user adjustments or calibration.

Features and Benefits

  • Tower conductivity and temperature input
  • Flow switch status input
  • 5 Key universal keypad
  • 2 Line, 16-character backlit display
  • Single water meter input

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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.

  • Monitoring of chemical inhibitor feed

    Technical Details

    • Selectable Inhibitor Feed: Provides 4 feed modes; bleed and feed, bleed then feed, proportional to makeup water volume and percentage time.
    • Water Meter Input: Allows for chemical to be fed based on water volume versus timed pump control methods generally found on comparably priced controllers.
    • Single Point Calibration: For ease of startup and operation. Warning message immediately detects fouled or faulty sensors.
    • What and Why Information: On the controller display is a valuable troubleshooting tool. Solenoid and chemical pump relays show complete status. Shows WHY the relay is on/off.
    • Controller Run Time: Gives total hours per day and total operating days since initial installation.
    • Robust Diagnostics: Provide complete 24-hour history of bleed valve operation, relay run times and minimum/maximum temperatures.
    • Keypad Password: Eliminates unauthorized adjustments.
    • Communication Options: Include Ethernet networking, dry contact alarm relay or 4-20 mA output on conductivity.
    • Optional Web Browser User Interface with Networking Capabilities: Provides ability to direct connect to the controller from a portable workstation, such as a laptop computer. You can also view critical processes remotely using a LAN connection.

    Technical Data

     Rating - DetailNotes
    Analog-Digital I/O  
    Conductivity SensorAuto ranging from 100 μS to 10,000 μS compensatedSingle point calibration, temperature
    Temperature Sensor32°F to 125°F (0°C to 50°C)Displayed as F or C
    Thermal Flow Switch1GPM trip within 30 seconds NO FLOWTypically 10 second trip with in FLOW/
    Water Meter Input current400 Hz, 0.5 mA at 5 V DC measurement headAccepts paddlewheel or contacting
    Relay Outputs1 SPST (Inhibitor), 1 SPDT (Bleed)Single controller fuse
    4-20 mA Output (optional)Single DC isolated, loop powered loopUser definable span, alarms on open
    Alarm Relay (optional) un-fused500 mA at 24 V DC Dry contact set, alarmNormally closed contact, open on
    Communications User Interface  
    Keypad-LCD5 Key tactile feedback, universal characters, 2 line x 16 character, backlitScan rate 100 mS nominal, User adjustale contrast
    10 Base T, TCP/IP Ethernet LAN (optional)HTML micro web server with user definable IP addressUser definable static IP Remote Monitoring & Programming
    Controls  
    Relay ON/OFFON/OFF control valveRelay 1 chemical feed, Relay 2 bleed
    Volumetric feedUser set, measure volume & pump on timeSequential control, measures make-up volume then bleeds for user set volume
    InterlockingFlow switch contact set inputRelays OFF when contact set opens
    BlockingInhibitor feed may be set to block on bleed 
    Alarms - Feed Limit TimersMinutes per dayAuto-reset at Midnight
    System  
    Units of MeasurementUS/Metric selectableOption to use US or Metric units of measurement
    Electrical120 V AC, 50/60 Hz 
    Internal Fusing5 A at 120 V AC 
    Surge SuppressionRelay 2 N.O. (bleed) contacts snubbed at 0.1 μF, 150 ΩVaristor on AC line input
    Accessory Power15-22 V DC, unregulated, thermally fused at 50 mA 
    EnclosureNon-metallic, NEMA 4X5.9”W x 5.9”H x 3.5”D (150 mm W x 150 mm H x 90 mm D)
    Certifications  
    CSA: Pending CSA tested to comply with UL (Pending)

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    Overview

    Single Cooling Tower/Closed Loop Controller

    The ProMinent microFLEX is a cooling tower/closed loop controller that combines the latest technology with an economical solution. Our breakthrough design offers a worry-free thermal flow switch that does not require any user adjustments or calibration.

    Features and Benefits

    • Tower conductivity and temperature input
    • Flow switch status input
    • 5 Key universal keypad
    • 2 Line, 16-character backlit display
    • Single water meter input

    Video

    Application

    Technical Data

    Downloads

    Find local ProMinent representative

    Contact us

    ProMinent Fluid Controls, Inc.


    sales-us@prominent.com

    +1 412-787-2484   
    sales-us@prominent.com Send request    

    »We are looking forward to your enquiry.«

    +1 412-787-2484 
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