When the pressure transmitter is used normally on an electric pallet truck
, the AC voltage value increases with the increase of the gear speed. After confirming that the electromagnetic induction coil is in good condition, a multimeter is also used to detect the AC voltage signal. The distance between the electromagnetic angular velocity pressure transmitter and the tooth top of the gear has a vital influence on the speed measurement. The peak voltage amplitude of the output signal of the pressure transmitter with a small air gap is large, which is conducive to detection, but the manufacturing accuracy and assembly requirements of the tested part will be improved, which will increase the manufacturing cost accordingly; the pressure transmission with a large air gap The device has low requirements on the manufacturing accuracy and assembly of the tested part, but the peak voltage amplitude of the output signal is small, which is not conducive to detection. First use a wrench to screw the pressure transmitter in until the cross section of the pressure transmitter contacts the top of the gear tooth; Secondly, turn the pressure transmitter half a turn to make the gap 0.5~1.5mm; finally, tighten the lock nut to fix the pressure transmitter. When installing the pressure transmitter, the end face of the pressure transmitter should face the gear. After fixing, it is necessary to measure the resistance value of the electromagnetic induction coil of the angular velocity pressure transmitter. If you cannot observe the AC voltage signal, you need to check the installation condition of the pressure transmitter; if you can observe the AC voltage signal, you need to check the connection line from the pressure transmitter to the corresponding controller. It can be seen that the forklift angular velocity Whether the pressure transmitter is installed accurately or not has a great influence on the measurement results. It is necessary to adjust the air gap to a suitable value, and then use a multimeter to test whether it is intact before it can be put into use. The air gap of the electromagnetic angular velocity pressure transmitter of the pressure transmitter is also an important parameter, generally 0.5 to 1.5 mm is better. Therefore, pressure transmitters are widely used on forklifts.
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