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CAL-C110 pH and ORP Simulator
From Sensorex

Sensorex - pH and ORP Checkers/Simulators

pH and ORP measurement loops can be difficult to troubleshoot unless you have the right tools. Our CAL-C110 simulator mimics the signal of a perfect pH or ORP sensor. No need to throw away good sensors when the issue may be the interconnection cables or pH/ORP instrument. The simulator can easily pay for itself the very first time you consider disposing of a perfectly good sensor. Allows the user to identify the sensor, cable, meter, preamplifier, or controller as the cause of the problem.

  • An essential tool for troubleshooting pH and ORP systems: Easily pinpoint the error in the system to the sensor, cable, meter, preamplifier, or controller

  • Compatible with most pH and ORP systems: Includes one (1) BNC to BNC interconnect cables; additional custom interconnects available

  • Simulate high impedance loads: Simple button operation enables high impedance load simulation

  • Instantly ready for use: Includes 9V battery

  • One year limited warranty: We stand behind all our products with the Sensorex Guarantee


  • pH Measurement Outputs: 4.00pH, 7.00pH, and 10.00pH (with & without high impedance load)

  • ORP Measurement Outputs: +/- 700mV

  • Temperature Range: 0-40° C

  • Impedance Load: 1000MO, when applied

  • Cable: BNC to BNC cable included; additional custom interconnects available

  • Power Requirements: one 9V battery included

  • Warranty: One year limited warranty

Instruction Sheet for CAL-C110 pH & ORP Simulator

How the Simulator Can Help

If the controller displays the correct value, the electrode is bad, and needs to be replaced.

If there is still an error on the display, another system component is at fault, and the checker will help you to determine which one is bad. The simulator may be connected directly to the preamplifier, and the signal verified.  if this solved the problem, the cable between the electrode and the preamplifier may be the culprit. 

If the simulator is connected to the cables leaving the pre amp and the display is normal, the preamplifier needs to be checked. Maybe a loose cable connection on the terminal strip, a bad cable, or a bad preamplifier. if the simulator is connected directly to the controller, and the display still shows error, it may be time to service the controller.

The simulator costs less than most pH electrodes. It can easily pay for itself the very first time you consider disposing of a perfectly good pH electrode. You will be able to eliminate the electrode, cable, meter, preamplifier, or controller as the cause of the problem. You may also check under high impedance condition, a most useful option with our checkers.


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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