pH Differential Electrode

Designed for continuous use in industrial process applications, the ECFP21A1A1 pH Differential Electrode offers several advantages for demanding process applications:

• Longer sensor life in a wide range of measurement environments.
• The reference electrode solution is buffered and less susceptible to contamination than the standard KCL reference solutions used in combination electrode systems.
• Any buffer standard from 2 pH to 10 pH can be used as a reference. This is very useful for applications that require adjustable isopotential points.
• The reference electrode is a pH glass bulb and the inner fill and silver wire are not
  easily contaminated. For standard combination electrode systems silver/silver
  chloride wires are used as a reference and can react with some process chemicals
  over time.
• Reference solutions and salt bridges can be easily replaced when fouling does
  occur.
• Integral electronic amplifiers measure potential difference of the process electrode
  and the reference electrode with respect to solution ground. This provides a low
  impedance output from the sensor which results in the following benefits:
  • Extended cable lengths of up to several hundred feet
  • Low noise and expensive coaxial cable is not needed.
  • Hand capacitance is dramatically reduced – readings do not fluctuate when
    sensors are held.
  • Electrical interference from motors, pumps and transformers are reduced.
  • Ground currents are essentially eliminated.

Find out more about pH Differential Measurements

Applications

Differential pH electrodes need special input electronics and cannot be connected to conventional pH transmitters and controllers. A good example of a differential pH system is the Alpha pH 2000D Controller and the Differential pH Electrode.

Specifications of pH Differential Electrode

Thermo Fisher Scientific Inc.
Copyright © 1997 Eutech Instruments Pte Ltd. marketing@eutechinst.com