Fluoride Monitoring System

The ProMinent® D1C Fluoride Monitoring System is designed for reagentless measurement of residual fluoride in potable and process waters. The DULCOMETER® D1C fluoride meter carries out potentiometric metering with the aid of an ion-selective electrode (ISE) and a reference electrode. This panel-mounted complete measuring station is adjusted to the special requirements in municipal and industrial applications. As a plug & play module, it can easily and quickly be installed and commissioned.




  • Reagentless measurement of fluoride
  • Complete component system
  • ProMinent D1C & Sensor Technology
  • Output signal to chart recorder
  • Fluoride sensor measurement range to 10 PPM
  • Low pH dependency of fluoride measurement
  • Rapid response and short run-in time of fluoride electrode
  • Simple calibration with DT2B Test Kit




  • Potable water treatment
  • Bottled water


Ordering Information


  • Panel Mounted Fluoride Monitoring System (P/N: 7744836)
  • Stand Base (P/N: 7744837)
  • NEMA 4X Enclosure (P/N: 7744711) *pictured
  • Heater (P/N: 7744722)
  • Sun shield (P/N: 7744723)


Components of the Monitoring System


Signal channel controller D1C


  • Electrical supply 230V 50/60 Hz or 115V 50/60 Hz
  • Analog output 4-20 mA for measured value
  • Alarm relay and two limit relays


Sensors, measurement transducers and in-line probe housings


  • Fluoride sensor type FLEP 010 SE (P/N: 1028279)
  • Reference electrode type REFP-SE (P/N: 1018458)
  • Temperature sensor type Pt 1000 SE for automatic temperature compensation (P/N: 1002856)
  • Measurement transducer 4-20 mA FV1 for fluoride sensor (P/N: 1028280)
  • In-line sensor housing DLG IV


PVC piping with


  • Rotameter & Flow Switch
  • Sample tap
  • Isolation valve on inlet side


Technical Data


  • Measurement range: 0.05 to 10 ppm fluoride
  • pH Operating Range: 5.5 to 9.5 pH
  • Temperature Range: 34o to 95o F
  • Max. Operating Pressure: 101.5 psi (Note: The maximum admissible operating pressure for the monitoring system is 14.5 psi, determined by the in-line sensor housing.)
  • Sample Water Flow Rate: 12-16 GPH



Related Products




Microprocessor-controlled Photometer DT1, DT2B, DT3 and DT4 serve to calibrate amperometric and fluoride measuring systems by comparison measurement. They are pre-assigned to defined verification procedures and include various measurement parameters. With little investment of time, accurate and reproducible results can be achieved.


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Hopkins Technical Products, Inc. • P.O. Box 2023 • Brentwood, CA 94513

toll free: (800) 732-6704 • ph: (925) 240-2160 • fax: (925) 240-2166

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