Pro-Range GML668E Tension Compression Force Sensor 5KN - ±0.2% F.S Output 1.5±10% mV/V

The GML668E provides a ratiometric millivolt-per-volt (mV/V) output of 1.5 mV/V ±10%. This means at its full 5 kN load and with a 10V excitation, the output will be approximately 15 mV. To read this low-level signal, you must connect it to a load cell amplifier or a high-resolution analog-to-digital converter (ADC) with instrumentation amplifier capabilities, such as the HX711 module for Arduino or a dedicated industrial signal conditioner.

Yes, the Pro-Range GML668E is specifically designed as a tension and compression load cell. Its mechanical structure and internal strain gauge arrangement are calibrated to measure forces applied in both directions along its primary axis. Ensure the sensor is mounted correctly with appropriate hardware to handle the intended force direction without introducing side loads.

The load cell requires a stable, low-noise DC excitation voltage between 5V and 15V, typically 10V is recommended for optimal performance. The output signal is directly proportional to this excitation voltage (ratiometric). Therefore, any noise or fluctuation in the supply will directly affect the output reading. For high-accuracy applications, use a precision voltage reference or a regulated power supply dedicated to the sensor bridge.

An IP66 rating denotes complete protection against dust ingress and powerful water jets from any direction. This allows the GML668E to be installed in dusty industrial environments or areas where it may be exposed to wash-down procedures. However, it is not submersible. Ensure the cable gland or entry point is properly sealed according to the installation instructions to maintain the rating.

Factory calibration is provided for the sensor element itself. For system integration, you must perform a two-point calibration on your complete measurement chain (sensor + amplifier + ADC + software). Apply a known zero load (typically the sensor's own weight in its mounted orientation) and a known full-scale load (up to 5 kN) using certified weights or a calibrated force gauge. Use these points to establish the linear scaling factor in your controller or data acquisition software.