Usually, cranes need to be fitted with sensors to measure the load of the force. There is pressure and tension in the loading mode, so the sensor required for measurement is also different, and the installation method is also very different.
The pressure sensor is used to measure the pressure, and the pressure sensor should be installed on the belt wheel shaft. This type of installation requires the structure of the crane to accommodate the pressure sensor space, otherwise the equipment will change, and the cost of replacing the equipment is often very large.
If it is extended, you need to use a tension sensor, at this time the tension sensor should be installed on the pulley, balance the wire rope from around the wire rope, the wire rope and tension sensor with a clamp, do not allow sliding. This method does not need to replace the moving equipment, and is only applicable to the case where the balance pulley is located in the fixed pulley group.
Therefore, before measuring the gravity load, first of all need to analyze the load mode, choose the right sensor, in addition to note that the weight of the crane to change the different spreader, the sensor must be unbalanced value to zero, which can reduce the measurement error generated, to avoid the danger of crane overload.
