On hx711 board you will find e e a a and b b connections.
Load cell connection.
Electronic weighing machine uses load cell to measure the load or pressure produced by the load here most load cells are follows the method of strain gauge which converts the pressure force into an electrical signal these load cells have four strain gauges that are hooked up in a wheatstone bridge formation.
Available with 0 03 linearity in capacities from 100 to 30 000 lbf.
It converts the mv signal of load cell in specific load cell module of plc.
We will be using a simple arduino library to communicate with the hx711 that provides a calibration and tare reset feature to easily determine the weight of an object.
A load cell is a force transducer.
It converts a force such as tension compression pressure or torque into an electrical signal that can be measured and standardized.
Black wire to e green wire to a white wire to a.
The most common types of load cell used are hydraulic pneumatic and strain gauge.
Load cell connection diagram and its pinout.
However if the load cell is installed correctly and the readings are still negative verify the wire connection according to the color code specified by the manufacturer.
When we apply load the strain gauge resistance will change and hence the output.
Most load cell have four wires red black green and white.
In this way it can not only retain the accuracy of load cell but also realize high resolution long distance transmission and quick response due to the specific extension module.
Stainless steel beam load cell with overload stops lc501.
On the opposite side you can see the connection for the load cell.
Red wire to e.
When connecting a 4 wire load cell to a junction box and then the junction box to a weight indictor it is best to use a 6 wire load cell cable for the junction box to weight indicator connection this will help to compensate any voltage drops during the length of the cable between them.
This method has the highest measurement accuracy among all load cell connection methods.
