A. The compressor of the constant temperature and humidity test chamber inhales the low temperature and low pressure refrigerant gas from the suction pipe, drives the piston to compress it through the motor operation, and discharges the high temperature and high pressure refrigerant gas to the exhaust pipe...
Lack of oil is one of the faults of the compressor of the constant temperature and humidity test chamber that is easy to identify. When the compressor is short of oil, there is little or no lubricating oil in the crankcase. Poor oil return will cause the compressor of the constant temperature and humidity test...
A. The constant temperature and humidity machine damp heat test is to place the sample or object coated with the paint film in a constant temperature and humidity machine with controlled temperature and humidity, and observe the changes such as foaming, corrosion and adhesion drop after a certain...
The refrigeration system of the constant temperature and humidity machine is normal, and the box leaks electricity. The reasons for this failure may have the following four aspects: A. Induction leakage The constant temperature and humidity machine is refrigerating...
The thermal shock tester is generally composed of compressor, air conditioner evaporator, cooler and piping system software. There are generally two types of blockages in the refrigeration system: dirty blockages and ice blockages, and oil blockages are relatively rare. 1. Dirty...
Now "low carbon" in life has gradually become a kind of living habit, which can not only make our life better, but also save production costs. The following editors of the HUANYI instrument will sort out the power-saving tips for the constant temperature and humidity testing machine for the...
The principle of the high and low temperature thermal shock test chamber adopts an integrated structure, that is, the test chamber consists of a high temperature test chamber located at the upper end, a low temperature test chamber located at the bottom, a freezer unit cabinet located on the rear...
The media gateway is controlled by a media gateway controller, which provides call control and signaling functions. Regarding the environmental test method of media gateway equipment, there is a relevant introduction in the standard YD/T 1387.4-2008. The following is the content compiled by Xiaobian for your...
Electric vehicle DC/DC converter, as a very important part of electric vehicle power system, its relevant ambient temperature test method refers to GB/T 24347-2009, which needs to be completed by constant temperature and humidity test chamber. The specific test steps are as follows. Test steps for...
1. Ball screw: The screw currently used in the tensile testing machine includes a ball screw and a trapezoidal screw. Generally, the lead screw has large clearance, large friction and short life. There are some manufacturers on the market now, in order to save cost and obtain greater benefits, use lead screws...
1. Is the high and low temperature test chamber running normally? When the temperature is too high, the setting parameters of the PID need to be sorted out. If the temperature of the high and low temperature test chamber rises directly, the over-temperature protection occurs, and the controller fails, the...
1. The difference between static and dynamic tensile testing machines 1. Structural level. The dynamic structure of the tensile testing machine is slightly more complicated than the static tensile testing machine. 2. Action level. In general, static racks cannot run at...