Precautions for the purchase of crane overload limiter
The crane overload limiter is composed of a weight sensor and a control instrument. It monitors whether the gantry crane, crane, hoist, electric hoist and other equipment are overloaded during the lifting process, and act on the overload. In order to better meet customer requirements, it is necessary to actually understand customer requirements before the production task process to achieve a better user experience. Here, a brief introduction to its purchase precautions.
Take the WTZ series overload limiter of Weite Electronics as an example, the purchase precautions are as follows:
Regarding the power supply voltage of the overload limiter, choose DC24V, AC220V, AC380V. Before purchasing, confirm the power supply of the meter for normal use, so as not to burn the meter due to voltage inconsistency in later use.
Control requirements: several types of control are required, such as overload, etc. Different instruments can meet different controls. The corresponding model should be selected according to the control requirements. The control relay needs to give that state (normally open or normally closed); Expand applications, such as RS485, 4-20MA output, etc.
Sensor selection: According to different installation methods on site, select the corresponding sensor type, and use the corresponding formula to calculate the sensor size according to the actual weight and magnification.
Sensor cable length: provide the distance from the sensor to the cab to determine the cable length