The Apure KDM EC sensor measures electrical conductivity in a compatible aqueous process. Select the supplied sensor version, conductivity range and matched controller using the actual EC documentation.

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The KDM is an electrical conductivity (EC) sensor for a compatible water-monitoring system. Conductivity reflects the ionic response of the sample and must be reported with a complete unit, such as µS/cm or mS/cm. A salinity scale in PSU or a pH range is not an EC measuring range.

Specify the conductivity measurement

State the expected minimum and maximum EC, complete unit, water composition, temperature and pressure. Confirm the supplied KDM version and its cell constant for that operating interval.
Match the sensor interface, power and receiving controller. For a digital version, use its actual protocol, register map and wiring drawing; do not infer connections from another model’s cable colours.
Identify the temperature sensor, compensation model and reference temperature. A conversion between mS/cm and µS/cm does not change the temperature basis.
If TDS or salinity output is required, confirm the additional conversion model and its suitability for the sample. These are not interchangeable labels for conductivity.

Calibration and installation

Inspect and clean the cell as directed, use a suitable conductivity standard with a stated temperature value, and follow the supplied meter/sensor calibration procedure. Verify with an appropriate independent check. Record cell constant, unit, temperature basis, standard and results.

Use the model’s specified immersion, mounting, cable protection and process limits. Avoid trapped bubbles or deposits that isolate the measuring cell from representative water. See conductivity calibration standards and EC versus TDS.

Brand	Apure
Model family	KDM electrical conductivity sensor
Measurement	Electrical conductivity of compatible aqueous samples
EC specification required	Confirm the supplied model suffix, conductivity range, full unit, cell constant and accuracy basis in the current EC datasheet.
System configuration	Confirm power, interface/protocol, temperature element, compensation settings, cable and compatible controller for the supplied version.
Process installation	Confirm wetted materials, connection, immersion, temperature and pressure ratings from the ordered sensor documentation.