pH Control in Metal Cleaning
The generator is used for surface treatment of metal parts as preparation for their painting and is divided into a degreasing,
phosphating and passivation zone. Throughput is in excess of 1,000 parts per day.
Challenge
- Automatic control and monitoring of pH in various zones of the generator
- Documentation of data for quality assurance purposes
- Generator design for highest level of operational safety and minimum expenditure on maintenance
Solution
Complete measurement/control/metering cabinet
- Two temperature-compensated measurement stations each for pH and conductivity
- Each with DULCOMETER® D1C controller, DULCOTEST® sensors, suitable for process use and by-pass housing
- Two Beta range solenoid-operated metering pumps complete with accessories and multi-channel recorder
Customer benefits
- Cleaning chemicals savings through pH-dependent metering instead of manual metering
- Operating staff savings thanks to fully automatic measurement, control and metering
- Improved occupational safety, as operating staff have no contact with aggressive chemicals
- Increased process safety through redundant measurement system
- Proof of quality through documentation of the parameters
- Low operating costs through simple operation of the generator and long service life of the pH sensors
- Little environmental burden through reduced emission of cleaning solutions
What the customer said
“With a ProMinent pH measurement system, even the most difficult problems were mastered.”
Mr. Valentin, Generator foreman, Geyer company, Nuremberg/Germany
