pH and EC Transmitter with Galvanic Isolated Output

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The HI98143 series is specially designed for long distance measurements of pH and Electrical Conductivity in industrial applications. It can be either panel or wall mounted.

  • Four models are available.
  • Automatic temperature compensation Connectivity.
  • PC compatible.

Direct Connection

Direct connection of the probes to the transmitter assures a positive electrical connection with no signal loss. This transmitter is ideal for remote process control applications.

Output Signals

Four models are available, transmitting a 0-1 V, 0-4 V or 4-20 mA signal. The output signals are proportional to the input signals but independent of changes in load or cable capacitance.

Automatic Temperature Compensation

Compensation for the effects of temperature for EC measurements is performed by the transmitters’ Automatic Temperature Compensation circuitry.



The transmitter can be connected to any pH or conductivity controller, recorder, PC or any data monitoring device that accepts 0 to 1 V, 0 to 4 V or 4 to 20 mA input.

Friendly Design

Probes connectors, power supply, contacts, and calibration trimmers are easy to reach directly on the front panel

Versatile Use

For in-line applications, the recommended pH electrode is the HI1001 while the conductivity probe is the HI3001. HI1001 is a combined double junction pH electrode with BNC and 3m cable; HI3001 is a 4-ring conductivity probe with platinum sensors and an int

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