
A sensor simulator is a tool that imitates the output of an analytical sensor. Connected to a transmitter in place of the sensor, it delivers a defined and stable signal so that the transmitter settings and the rest of the measurement loop can be checked against a known value.
pH sensor simulation is used to verify that a pH measurement loop is set up correctly and to troubleshoot it. The simulator provides the signal that a pH sensor would produce at a given value, so the reading, scaling, alarms, and control response can be confirmed without a sensor and buffer solutions.
A buffer solution checks the sensor itself, whereas a simulator checks everything downstream of the sensor: the cable, transmitter, settings, and control system. Using a simulator separates sensor problems from loop problems and provides a stable value at any point in the measuring range.
METTLER TOLEDO offers simulation and validation kits for pH, dissolved oxygen, and dissolved carbon dioxide. Each kit is designed to reproduce the output of a specific sensor or group of sensors.
Yes. ISM simulator kits reproduce the digital signal of ISM pH, dissolved oxygen, and carbon dioxide sensors for verification of the loop and the transmitter settings. Analog simulators such as the pH Simulator 112 are used to test analog transmitters and their connecting cables.
Use a simulator as soon as a reading is in doubt. If the transmitter shows the simulated value correctly, the transmitter, cable, and settings are working, and the cause lies with the sensor or the application. If it does not, the fault is in the loop, and the simulator helps narrow down its location.