How to analyze troubleshooting high and low temperature impact testing machines

The high and low temperature impact testing machine is a necessary testing equipment for metal, plastic, rubber, electronics and other material industries.BD7Textile Testing Instruments, Testing Equipment Manufacturer

It is used to test Material structures or composite materials used materials, to the extent that they can withstand the continuous environment of extremely high and extremely low temperatures in an instant, can the chemical change or physical damage to the sample caused by thermal expansion and contraction in a short time recognize. BD7Textile Testing Instruments, Testing Equipment Manufacturer

It is divided into two-chamber type and three-chamber type. The difference lies in the testing method and internal structure. The product conforms to the standard:BD7Textile Testing Instruments, Testing Equipment Manufacturer

IOS2423.1 -2008 Test A, IOS2423.2-2008 Test B, GB-T10592-2008, GJB150.3-198, GJB360A -96 Method 107 thermal shock test requirements. BD7Textile Testing Instruments, Testing Equipment Manufacturer

TroubleshootingBD7Textile Testing Instruments, Testing Equipment Manufacturer

1. In the high temperature test, if the temperature changeIf the battery does not reach the test temperature value, you can check the electrical system and eliminate the faults one by one. BD7Textile Testing Instruments, Testing Equipment Manufacturer

If the temperature rises very slowly, in the air circulation system, check whether the air circulation control damper is open normally, otherwise, check whether the air circulation motor is running normally. BD7Textile Testing Instruments, Testing Equipment Manufacturer

If the temperature overshoot is severe, the PID tuning parameters need to be adjusted. If the temperature rises directly, the over-temperature protection means that the controller is defective and the controller must be replaced. BD7Textile Testing Instruments, Testing Equipment Manufacturer

2. If an error occurs suddenly during the testing process, the appropriate error screen will appear on the controller and an audible alarm will sound. BD7Textile Testing Instruments, Testing Equipment Manufacturer

The operator can quickly check what kind of error it belongs to in the troubleshooting chapter of the operation and use of the device, and then ask the staff to explain the errorr to fix quickly to ensure that this is the normal course of the test. BD7Textile Testing Instruments, Testing Equipment Manufacturer

There will be different phenomena when using other environmental test equipment. Therefore, it is necessary to analyze and eliminate certain phenomena. BD7Textile Testing Instruments, Testing Equipment Manufacturer

Environmental testing equipment should be maintained regularly, the cooling system condenser should be cleaned regularly, the moving parts should be lubricated according to the instructions, the electrical control system should be regularly maintained and checked, etc. These tasks are indispensableBD7Textile Testing Instruments, Testing Equipment Manufacturer

3. When the low temperature can not reach the test index, you need to observe the temperature change, whether the temperature decreases very slowly, or the temperature increases after reaching a certain valueBD7Textile Testing Instruments, Testing Equipment Manufacturer

The former must check whether the studio has dried before the low-temperature test, so that the studio remains dry, and then the test sample is put into the studio and thentested; /p

Whether the test specimens are placed too far in the workroom so that the wind cannot fully circulate in the workroom. After eliminating the above reasons, it is necessary to check if there is a fault in the cooling system. Ask the manufacturer's personnel for an overhaul. BD7Textile Testing Instruments, Testing Equipment Manufacturer

The latter phenomenon is caused by the poor usage environment of the devices. The position (the distance between the back of the box and the wall) must meet the requirements (this is specified in the device user manual ). BD7Textile Testing Instruments, Testing Equipment Manufacturer

4. In the heat test, the actual humidity reaches 100%, or the actual humidity is very different from the target humidity and the value is much lower. The former phenomenon:

The cause may be drying out of the gauze on the wet bulb sensor. Then check that there is no water in the wet bulb sensor tank. The water level in Ttank is automatically controlled by a water level controller. Check whether the water supply system of the water level controller is working properly. The water supply is normal and the water level controller is working properly. BD7Textile Testing Instruments, Testing Equipment Manufacturer

Another possibility is that due to long-term use or the purity of the water supply, the wet ball gauze will harden the gauze, preventing the gauze from absorbing water and drying. Cleaning the gauze can eliminate the above phenomenon. BD7Textile Testing Instruments, Testing Equipment Manufacturer

The latter phenomenon mainly consists in the fact that the humidification system does not work. Check the water supply system of the humidifying system, whether there is a certain amount of water in the water supply system water level control of the humidifying boiler. The water level in the humidification boiler is normal. Whether the water level inside the humidifying boiler is normal. BD7Textile Testing Instruments, Testing Equipment Manufacturer

If all of the above are normalnd, check the electrical control system and ask maintenance personnel to overhaul it. BD7Textile Testing Instruments, Testing Equipment Manufacturer

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