EN/IEC 61326-2-3

EN/IEC 61326-2-3 specifies EMC requirements for transducers with integrated or remote signal conditioning — sensors that convert physical quantities into electrical signals. Part of the Compatible Electronics Learning Center.

What is EN/IEC 61326-2-3?

IEC 61326-2-3 is a particular requirements standard within the IEC 61326 series ("Electrical equipment for measurement, control and laboratory use — EMC requirements"). Part 2-3 addresses transducers with integrated or remote signal conditioning — devices that sense a physical quantity (temperature, pressure, flow, displacement, etc.) and convert it into an electrical output signal, with signal conditioning either built into the transducer or provided by a separate connected module.

These devices occupy a unique position in measurement systems: they are often installed close to the physical process being measured, in locations that may be electromagnetically harsh (near motors, switching equipment, welding machines), yet they must produce accurate, stable signals under those conditions. The standard addresses this challenge by specifying test configurations and performance criteria appropriate to the transducer's intended use. Compatible Electronics provides IEC 61326-2-3 transducer testing services.

Product Types Covered

Temperature transducers with integrated transmitters (4–20 mA, HART, Modbus)
Pressure transducers and transmitters
Flow sensors with integrated electronics
Position and displacement sensors with signal conditioning
Load cells and force sensors with amplifier modules
pH, conductivity, and other analytical transducers
Level sensors and radar level transmitters

Key Testing Considerations

Test Configuration

The standard specifies how the transducer and its signal conditioning must be configured during testing — including the input stimulus (simulated physical quantity at the transducer input), the output load, and the cable arrangements. Correct configuration is critical because the test results are sensitive to how the device is set up.

Performance Criteria

Performance criteria for transducers differ from general-purpose measurement equipment because transducer accuracy under disturbance is defined relative to the output signal accuracy specification. The standard defines allowable output deviation as a percentage of the measurement range during and after immunity testing.

Emission Testing

For transducers with active electronics, conducted and radiated emission testing verifies that the integrated signal conditioning circuitry does not generate disturbances that would interfere with other equipment in the installation.

Standard Version	Locations Accredited
EN 61326-2-3 (2013)	Lake Forest/Silverado, Brea, Newbury Park
IEC 61326-2-3 (2006)	Lake Forest/Silverado, Brea, Newbury Park

EN/IEC 61326-2-3

EN/IEC 61326-2-3

What is EN/IEC 61326-2-3?

Product Types Covered

Key Testing Considerations

Test Configuration

Performance Criteria

Emission Testing

Related Resources

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