How to repair digital torque wrench

When digital torque wrenches are used in our daily life, it is normal for some faults to appear. For the special digital torque wrench troubleshooting skills, we must first analyze the cause of the fault! The user must cooperate with the maintenance company to preliminarily classify the failure and help the supplier obtain valuable reference information during the telephone communication. Here are some ways to introduce maintenance:

A. Digital Torque Wrench Maintenance Method 1:

1, first check your digital torque wrench sensor connection cable is connected, is not there is a sensor signal line short circuit or open circuit, as well as welding whether there is a virtual welding phenomenon.

B. Digital Torque Wrench Maintenance Method 2:

1, then check whether your instrument is fully charged, if it is not enough charge, it is also easy to cause, can not normally use the boot, the value is not stable, on-line beat. When using a logic pen or oscilloscope to detect signals, be careful not to let the probe touch the two measurement pins at the same time, because the essence of this situation is to form a short circuit when power is applied.

C. Digital torque wrench repair method three:

1. When using the multimeter's ohmic block, remember not to measure with electricity. When testing the filter capacitor in the power supply of the digital display torque wrench, the positive and negative electrodes of the electrolytic capacitor should be short-circuited first, and the short-circuit line should not be used to discharge the capacitor instead of the wire, because it is easy to blow the core wire. A 220-volt, 50-watt light bulb with a cap lead can be taken and connected at both ends of the capacitor. At the moment of discharge, the bulb will flash.

D. Digital torque wrench maintenance method four:

1. When measuring the parameters of each point, you can use ordinary hand-sewing needles to weld on the pens of the multimeter so that the points can be directly measured by piercing the paint layer without using a large area and peeling off the paint layer. This will cause oxidation of the copper foil.

E. Digital Torque Wrench Maintenance Method 5:

1. When the maintenance of the wet environment is faulty, it is necessary for the circuit board's circuit multimeter to measure whether each point is unobstructed.

2. Because the main fault in this case is the corrosion of copper foil. For circuit boards with corrosion, we can use 95% industrial alcohol to clean and wipe, so as not to cause corrosion of the larger mask.

3. If the internal circuit of the digital torque wrench is tested, if the contacts and circuit board of the mounting component are coated with insulating varnish.

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