“S” Type Load Cell – 500 kg Range

Description

S-type load cell made of stainless steel, accuracy class C3, 500 kg range and two M12 threaded holes. It consists of small elements called strain gauges mounted at precise points on the structure. It provides an output electrical signal that varies according to the deformation produced by the force (tension or compression) applied to the component. The most common applications are: electronic scales, parts counting scales, scales for suspended loads, postal packages and all varieties of single-cell commercial scales.

Technical specifications

• Creep after 30 minutes (% of Full Scale): 0.02
• Temperature effect on sensitivity (% of Full Scale): 10°C (0.02)
• Temperature effect on zero (% of Full Scale): 10°C (0.02)
• Cables: 4 wires approximately 250 cm long
• Wiring:
  – red wire Positive 5V
  – black wire Negative 5V
  – green wire OUT +
  – white wire OUT –

Example of use with Arduino and HX711 board (not included)

#include “HX711.h”
#define calibration_factor -9580.00 //This value is obtained using the SparkFun_HX711_Calibration sketch
#define DOUT 4
#define CLK 5
HX711 scale(DOUT, CLK);
void setup() {
Serial.begin(9600);
Serial.println(“HX711 scale demo”);
scale.set_scale(calibration_factor);
scale.tare(); //Assuming there is no weight on the scale at start up, reset the scale to 0
Serial.println(“Readings:”);
}
void loop() {
Serial.print(“Reading: “);
float libbre = scale.get_units();
float kg = (libbre/2.2046);
Serial.print(kg, 1); //scale.get_units() returns a float
Serial.print(” kg”); //You can change this to kg but you’ll need to refactor the calibration_factor
Serial.println();
}

Documentation and useful links

• HX711 Datasheet
• Examples