SOP SOPX-306-200kg 2.0mV/V Single-Point Load Cell Sensor

The SOPX-306 load cell can accept a maximum excitation voltage of 15V DC. A typical recommended excitation is 5V or 10V DC, which will produce a corresponding output signal of 10mV or 20mV at full scale (200kg) given its 2.0mV/V sensitivity. Always use a stable, regulated DC power supply to ensure measurement accuracy.

This load cell has a 4-wire connection: Excitation+ (Red), Excitation- (Black), Signal+ (Green), and Signal- (White). You cannot connect the low-level mV output directly to an Arduino. You must use a precision instrumentation amplifier (like an HX711 module) to amplify the differential signal, convert it to digital, and provide stable excitation. The HX711 communicates via a simple serial interface for easy microcontroller integration.

Non-linearity (0.03% F.S.) is the maximum deviation of the sensor's output from a straight calibration line. Hysteresis (0.03% F.S.) is the maximum difference in output when the same load is approached from zero and from full scale. Repeatability (0.03% F.S.) is the sensor's ability to produce the same output under identical loading conditions. Together, these specs define the sensor's high precision.

This SOPX-306 load cell features dust-proof sealing, making it resistant to dry particulates. It is not rated as waterproof (IP67/IP68). For outdoor or wet environments, additional protective enclosures or conduit for the cable entry are required to prevent moisture ingress, which could damage the internal strain gauges and affect performance.