​Problems and protection methods of waterproof electronic crane scales in daily use

Problems and protection methods of waterproof electronic crane scales in daily use
 Waterproof electronic crane scale in daily use is to avoid problems, so how do we solve the problem?

 1. No return to zero (no return to zero, no weighing)
 A.  Check whether the output signal value of sensor is within the standard. (A/D's  total magnification code/internal code range/base code range)
 B.  If it is not in the standard, please refer to item 10 for compensation.
 C.  If it cannot be compensated, please check whether the sensor is defective. (please follow item 8 for testing)
 D.  Please correct the weight according to the instruction manual.
 2,  weight is not correct
 A.  Observe whether the internal code value is stable, whether there is friction at various parts of the sensor, whether the voltage regulator is stable, whether the operational amplifier circuit is normal, whether there is any foreign matter in the circuit version of a /D circuit, and whether the feedback resistance/capacitor/filter capacitor is defective or leakage.
 B.  Check whether the output signal value of sensor is within the standard.
 C.  If it is not in the standard, please refer to item 10 for compensation.
 D.  Use weights to test whether the scale is even. (if not, please refer to item 9  for scaling)
 E.  Please correct the weight according to the instruction manual.
 The protection method of waterproof electronic crane scale
 Coating method
 Cover the protective layer on the surface of the waterproof scale, so that the waterproof scale products and the surrounding corrosive media isolation, so as to prevent corrosion. Such as:
 1,  steel products coated with oil, vaseline, paint or cover enamel, plastic and  other corrosion resistant non-waterproof scale material.
 2,  by electroplating, hot plating, spraying and other methods, on the surface of  steel plating a layer of corrosion resistant waterproof scale, such as zinc, tin, chromium, nickel, etc. These waterproof scales often form a dense oxide film  due to oxidation, so as to prevent water and air corrosion of steel.
 3.  A fine and stable oxide film is formed on the surface of steel by chemical method. Such as in the machine parts, guns and other steel parts form a layer of fine black iron oxide film and so on.
 Electrochemical protection act
 Make use of galvanic battery principle to protect waterproof scale, try to eliminate galvanic battery reaction that causes electrochemical corrosion. Electrochemical protection law is divided into two categories: anodic protection and cathodic protection. Cathodic protection law is more widely used. [treatment of corrosive media] to eliminate corrosive media, such as wiping off waterproof scales frequently, placing desiccant in precision instruments, and adding a small amount of corrosion inhibitor to corrosive media to slow down the corrosion rate.