Tuesday, March 9, 2021

How to maintain the high and low temperature with humidity test chamber under long-term idle

 Many customers have purchased LISUN GDJS high and low temperature with humidity test chamber, but they will not use them frequently after purchase. It often needs to be idle for a period of time after the test, and continue to be used when they need to do test. Therefore, how to maintain the high and low temperature humidity test chamber when it is idle for a long time? The high and low temperature test chamber that has been idle for a long time needs to be covered with a dust cover, and then placed in a ventilated and dry room. It can be inspected and tested for half a year to see the components whether it can operate normally. You can proceed as follows when perform maintenance:

1. Wipe clean the inside of the high and low temperature test chamber with a clean cloth. To use it again, what you have to do first is to open the door of the high and low temperature test chamber to ventilate, scrub the inside of the high and low temperature test chamber again, and clean the dust on the condenser to facilitate the heat dissipation of the high and low temperature test chamber after operation.
2. Regarding system maintenance, you must unplug the power supply. When the high and low temperature test chamber is shut down when the power is off, avoid damaging the compressor and other components
3. Use it again. After cleaning the high and low temperature with humidity test chamber, do not start using it immediately. Let the high and low temperature test chamber work for a short period of time and stop after every two or three minutes of work. Repeat this several times. Why you need to do this? We know that lubricating oil has fluidity. After the high and low temperature test chamber is placed for a period of time, the lubricating oil of some parts will be too thin. When it is used again, because the internal temperature of the high and low temperature chamber is room temperature, reducing the extra temperature requires the compressor to work continuously for a long time. At this time, some of the lubricants that are too thin will wear out quickly, and then reduce the life of the high and low temperature test chamber.
4. Allowing the high and low temperature test chamber to work repeatedly for short periods of time can allow the lubricating oil to be redistributed in the compressor and moisturize the interior of the machine parts continuously. By the way, here I want to mention: many of the newly purchased high and low temperature test chamber have been placed in the laboratory for some time, and this method can also be used to maintain the high and low temperature test chamber during the first use to avoid the compressor life loss.

The high and low temperature with humidity test chamber is widely used for its precise temperature control performance and temperature change rate. In industrial and daily necessities, as long as it involves high and low temperatures in the use environment, it is generally necessary to use a high and low temperature test chamber for testing. As one of the indispensable testing equipment in aviation, metal, automobile, electronics and other industries, high temperature test chamber is often used to simulate product performance under high temperature environment. The product pictures of the GDJS high and low temperature with humidity test chamber developed by LISUN are as follows:

 
GDJS-015B High and Low Temperature Humidity Chamber

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Surge Generator, EMC Test SystemsESD Simulator, EMI Test Receiver, Electrical Safety Tester, Integrating Sphere, Temperature Chamber, Salt Spray Test, Environmental Test ChamberLED Test Instruments, CFL Test Instruments, Spectroradiometer, Waterproof Test Equipment, Plug and Switch Testing, AC and DC Power Supply.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp: +8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp: +8618917996096

Monday, March 1, 2021

The working principle of the salt spray test chamber

 Application Field:

The salt spray test machine is also called the salt spray test chamber, the full name is the salt spray test chamber, which is mainly used to test the corrosion resistance of the samples. At present, it is widely used in the aerospace industry, automotive electronics, electronics and electrical, mobile phone digital, plastic products, metal materials and other industries to test its corrosion resistance. It also simulates the extreme conditions under natural conditions or working conditions to understand the samples to perform temperature conditions.

Standard:
It meets the following standards: IEC60068-2-11 (GB/T2423.17), GB/T10125, GB/T1771, ISO9227, ASTM-B117, GB/T2423-18, QBT3826, QBT3827, IEC 60068-2-52, ASTM-B368, MIL-STD-202, EIA-364-26, GJB150, DIN50021-75, ISO3768, ISO 9227, 3769, 3770; CNS 3627, 3885, 4159, 7669 etc.

Working principle of the salt spray test chamber:
The working principle of the salt spray test chamber is relatively simple, mainly compressing the corrosive solution into an air spray, spraying the sample, and wrapping the spray on all sides of the sample as much as possible. This test can be performed continuously or cyclically until the sample is corroded. , And then record the corrosion time as the corrosion resistance of the sample. The longer the time, the better the corrosion resistance of the sample.

Generally, the corrosion solution in the salt spray test chamber is mainly 5% sodium chloride solution or 0.26 grams of copper chloride per liter added to the sodium chloride solution as the salt spray corrosion solution. In addition, the salt spray test chamber can independently control the sedimentation volume and spray volume of the salt spray to ensure constant test temperature, convenient operation and stable test environment. Therefore, it is often used to test the corrosion resistance of daily necessities or industrial products.

The test chamber can reach any temperature point from room temperature to 50℃ in the test working space, and keep it constant. Conduct salt spray corrosion tests on materials or products in a cabinet with a specified volume under constant temperature and relative humidity. The material used to manufacture this equipment is imported corrosion-resistant PVC plastic sheet, which does not react with salt-containing solutions or acidic salt-containing solutions, and does not affect the test results. In the design of this equipment, the internal and external pressures are balanced, and the salt spray can settle freely in the box and can be adjusted to the range specified by the national standard.

The YWX/Q-010 Salt spray test chamber of Shanghai LISUN is mainly composed of a cabinet, a spray system, a heating system and a control system. Product picture is below:

[caption id="attachment_5785" align="aligncenter" width="400"] 
YWXQ-010 Salt Spray Test Chamber

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Surge Generator, EMC Test SystemsESD Simulator, EMI Test Receiver, Electrical Safety Tester, Integrating Sphere, Temperature Chamber, Salt Spray Test, Environmental Test ChamberLED Test Instruments, CFL Test Instruments, Spectroradiometer, Waterproof Test Equipment, Plug and Switch Testing, AC and DC Power Supply.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp: +8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp: +8618917996096