What are the requirements for the pointer of stainless steel seismic resistance meter?

Stainless steel shock-resistant meter is composed of many parts: connector, spring tube, sealing piece, movement, connecting rod, dial (dial), pointer, sealing ring and case. The following is a description of the technical provisions of the stainless steel shock-resistant table pointer:

1. The pointer material should be made of light weight and good toughness, in order to prevent the pointer from bending and deforming when the instrument suddenly drops to a low position or collides with violent force. 　　

2. When the pointer is centered on the needle cap, the indicating end and the tail end of the pointer should reach a static balance, otherwise it will distort the indicated value of the instrument and reduce the accuracy of the instrument. 　　

3. The pointer and the needle cap should be riveted firmly, so that looseness should not occur. The taper of the inner hole of the needle cap must be consistent with the taper of the shaft of the movement, so as to ensure that the pointer and the shaft of the movement are combined and fastened, and prevent the pointer from falling off during work. 　　

4. The indicating part of the pointer should cover 1/4~1/3 of the short scale length. 　　

5. When the dial is white, the color on the front of the pointer is black or blue; When the dial is black, the color on the front of the pointer is white or yellow. The pointer is not allowed to reflect light, so as not to hinder reading. 　　

6, the pointer shall not have defects that affect the appearance and shape, such as paint, interlayer, burr and so on.

What factors will affect the precision of diaphragm pressure gauge?

If you think that the accuracy of diaphragm pressure gauge is not very high in the process of using it, you can take some measures to improve its accuracy at this time, but before that, you need to find out what factors affect its accuracy. Let's take a look at some methods.

Because the quality of diaphragm pressure gauge spring tube is very important to the accuracy of precision meter, the following points are listed for discussion:

1. Proportional limit and elastic limit of diaphragm pressure gauge. The following examples illustrate the proportional limit with low carbon steel and stress-strain characteristic curve. When the relative deformation inside a material increases in direct proportion to the stress, the great stress is called the proportional limit. Elastic limit, under a certain stress, the residual deformation in the material has reached a predetermined small value (0.002% ~ 0.005% of the original length of the pattern), then this stress is called elastic limit and expressed by elasticity.

2. Elastic deformation of elastic element of diaphragm pressure gauge. Under the action of pressure, the geometric shape and size of elastic sensitive element of diaphragm pressure gauge will change. Within the elastic limit, the change is directly proportional to the pressure. When the pressure is cancelled, the element can return to its original size and shape. This phenomenon is called elastic deformation.

3. Inelastic effect of elastic element of diaphragm pressure gauge and elastic aftereffect of elastic element of diaphragm pressure gauge. It means that when the pressure exerted on the elastic element is cancelled, the original shape and size cannot be restored immediately, but it will take some time for the elastic element to return to its original shape and size. This phenomenon is called elastic aftereffect.

Link-B2B is a professional supplier listing service platform which will provide high quality and trustworthy supplier list to international buyers. If you are looking for pressure gauge suppliers, feel free to visit Link-B2B.com and send a request.