Pro-Range GSP903 10 kN Rope Tension Load Cell Sensor, 0.3%F.S, 1.0-1.5mV/V, 10VDC

The GSP903 is designed for a nominal 10 VDC excitation voltage. While strain gauge bridges can often tolerate slightly higher voltages (e.g., 12-15 VDC) for increased signal strength, exceeding 10 VDC may increase internal heating and affect long-term stability. For optimal performance and rated accuracy, it is strongly advised to use a stable, regulated 10 VDC power supply.

The load cell has a 4-wire connection: Red and Black wires for the excitation voltage (10 VDC), and Green and White wires for the signal output (1.0-1.5 mV/V). This low-level mV signal must be amplified by a dedicated strain gauge amplifier, instrumentation amplifier, or a load cell signal conditioner module before it can be read by a PLC, data logger, or microcontroller. Direct connection to an Arduino or Raspberry Pi analog input is not possible without such signal conditioning.

No, the GSP903 is specifically designed as a rope tension sensor. Its mechanical structure, featuring a central groove for the rope, is optimized to measure pure tensile forces. Applying compressive or side-loading forces will not provide accurate readings and may damage the internal strain gauges. For compression or universal (tension/compression) measurement, a different load cell model (like an S-type or button load cell) should be selected.

This specification denotes the sensor's sensitivity. It means that for every 1 Volt of excitation applied, the sensor will output a signal between 1.0 and 1.5 millivolts at its full rated load (10 kN). For example, with a 10 VDC excitation, the full-scale output will be between 10 mV and 15 mV. This ratiometric output means the signal is proportional to both the applied force and the excitation voltage, providing inherent compensation for supply voltage fluctuations.

Yes, precise calibration is required for accurate measurement. The load cell should be calibrated using known standard weights or a calibrated force gauge in a tension setup matching its final installation. The process involves applying zero load (to set the tare) and then applying the full rated load (10 kN) to establish the span. This calibration data is then programmed into the connected signal conditioner or data acquisition system to convert the raw mV signal into engineering units (kN or lbf).