博文

HuanRui Test teaches you how to add refrigerant to high low temperature impact boxes!

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HuanRui Test teaches you how to add refrigerant to high low temperature impact boxes! The compressor is one of the core components of the high and low temperature shock box . It sucks low temperature and low pressure refrigerant gas (also called refrigerant) from the suction pipe, and after the motor is driven to drive the piston to compress it, the high temperature is discharged to the exhaust pipe. The high-pressure refrigerant liquid provides power to the refrigeration cycle to achieve a refrigeration cycle of compression→condensation→expansion→evaporation (endothermic). How to join if there is less refrigerant? 1. Prepare a scale, overweight the refrigerant cylinder and record the total net weight. 2. Place the cylinder on the scale, use a piece of x1 copper tube for one section, connect it to the cylinder with a special thread, and connect the other end to the multi-purpose channel of the high-low temperature thermal shock box compressor suction valve, and connect the mul...

Teach you to quickly understand the 5 features of the walk-in room!

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Teach you to quickly understand the 5 features of the walk-in room! The walk-in test room has been upgraded on the basis of the original walk-in test room. It has a large test space. The operator can operate the test product in the test room and provide temperature for the batch or large parts, semi-finished products and finished products of industrial manufacturers. Conditions for humidity environment testing. The advanced Chinese liquid crystal display screen touch screen can be used for various complicated program settings. The program setting adopts dialogue mode, and the operation is simple and rapid. It can realize the automatic operation of the chiller, realize automation to a large extent, and can configure the LAN communication interface, which is convenient for remote distance control and centralized control of the user. It can record 90 days of temperature and temperature parameters, and is equipped with a paperless recorder. Walk-in laboratory 5 features are as fol...

What should you pay attention to when testing the vacuum oven temperature?

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What should you pay attention to when testing the vacuum oven temperature? Vacuum oven Usually, the temperature detection of the small vacuum drying oven is carried out according to the detection method of the ordinary temperature box, but in fact, this method is not correct. The small vacuum drying box cannot be used as an electric drying oven because the working chamber is not in a vacuum state, and the measurement is performed. The temperature is very different from the actual temperature in the working chamber. The temperature detection of the small vacuum drying oven is preferably carried out under vacuum. When the temperature detection of the small vacuum drying oven is carried out, please pay attention to the following aspects: a. When the temperature in the working chamber is close to the set temperature, the HEAT light will be dimly lit and dark, indicating that the heating enters the PID adjustment stage. The meter sometimes measures the temperature exceeding the ...

What is the slowdown in the high and low temperature environment box?

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What is the slowdown in the high and low temperature environment box? 1. Observe if there is no problem in the operation of the refrigeration compressor, check if the air pressure of the compressor exhaust and suction is not normal. If the exhaust and suction pressures are low and the pumping is empty, then the refrigerant in the refrigeration unit is insufficient. 2. Touch the compressor's exhaust and suction basket by hand. The exhaust temperature is not high or low, indicating that the main mechanism type of refrigerant is lacking. (Huanrui/Reale Test)

Important parts of high and low temperature test chamber

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Important parts of high and low temperature test chamber  The high and low temperature test chamber is composed of many accessories. Although the inner accessories are inconspicuous, they play a very important role. Generally, the faulty part is caused by the accessories. The following is important parts: 1. Door handle: Generally, there is no reaction door handle. If the damage is inconvenient to the user, you should contact the manufacturer for replacement. 2. Screws: High-low temperaturetest box also has loose screws for long-term use, so users should check regularly. If looseness is found, tighten it in time to avoid parts falling off. 3. Sealing strip: It adopts silicone rubber sealing strip which is resistant to years of aging and long-term resistance to -80 °C ~ 200 °C. Do not pull the seal during use. If it is pulled, it will cause the seal to fall off. In addition, it is necessary to regularly check whether the sealing strip is deformed or notched. If it shoul...

Difference between Two-box and Three-box temperature impact test chamber

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Difference between Two-box and Three-box temperature impact test chamber                       Three-box chamber         Two-box chamber Three-box temperature impact test chamber :it is known that it has three working chambers, namely a high greenhouse, a low greenhouse, and a test room for placing the tested products. Although the speed of the temperature rise and fall is slightly slower, the product is more stable and will not move due to the test. It is more suitable for some manufacturers who have strict requirements on the product position. Two-box temperature impact test chamber has two working chambers, a high greenhouse and a low greenhouse. The product is placed on the hanging basket in the equipment, mainly through the lifting and lowering of the hanging basket to achieve the purpose of temperature hitting. The box replaces the temperature environment faster, but it may move the sample during t...

Burn in room attention

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Burn in room attention: Installation of burn in room  (from Huanrui/Reale test) 1. Be sure to ground, and the wiring must be good and correct. If it is not grounded, it may cause electric shock, or the measurement may have a large error. 2 In order to prevent electric shock or malfunction and malfunction, please do not turn on the power before installation and wiring to avoid accidents. 3. Burn in room needs to be kept open, and if it is not smooth, it will malfunction or malfunction. 4. While burn in room is running,do not open the door. Because the opening at high temperature may cause burns to the operator. If it is cold, it may cause frostbite to the staff, and some may cause the evaporator to freeze. So affect the cooling effect, if you must open, please do the protection work. 5. Interior parts have a certain life span, so in order to use the equipment continuously and safely, please carry out regular maintenance and maintenance.