What are the characteristics of a small temperature alternating cold and hot test chamber?

Shanghai Shangqi Group Test Equipment Co., Ltd. is a company specializing in the production of thermal shock test chambers. It is a member of the Group, the company specializes in the development, production, sales and technical services of medium and high-end environmental and reliability test equipment and its edge products, and has mature experience and installation capabilities in the design and manufacture of large-scale non-standard complex environment test equipment. It is even more unique in terms of thermal shock test chambers!

The characteristics of the forest frequency small temperature alternating cold and hot alternating test chamber are as follows.

1. Comprehensive safety protection device, when abnormal conditions occur, the screen will automatically display the fault point and cause and provide troubleshooting methods, and when the input power is found to be unstable, it has an emergency shutdown device.

2. The refrigeration system adopts a binary high-efficiency low-temperature circuit system design, adopts a compressor imported from France, and adopts a green environmental protection (HFC) refrigerant R507 and R23 with zero ozone coefficient

3. Super safety protection function: power overload protection, leakage protection, control loop overload, short circuit protection, compressor protection, grounding protection, overtemperature protection, alarm sound prompt, etc.

Fourth, the internal and external materials of the high and low temperature impact test chamber are made of stainless steel plate (SUS

5. The energy storage high and low temperature impact test chamber does not need to use liquid gas (LN2LCO2) to assist in cooling, and the complete static test method of the DUT is used for the current electronic parts testing, research and semiconductor production line for a large number of screening, which can save a lot of consumables testing costs. Fast operation and high reliability, the company has developed high-performance testing machines after years of painstaking research and development, providing you with long-term reliable testing tools.

The small temperature alternating test chamber adopts the original imported button type man, machine interface temperature controller, the original imported fully enclosed compressor, the whole machine has stable performance, easy to operate, easy to install, the control technology has reached the current high level, and the performance and price ratio are significantly better than similar imported equipment, which is the ideal equipment for high and low temperature alternating (reale). Temperature Sensor: PT100 Dry Bulb Sensor, Protective Device:

Compressor overheating, overflow, overpressure, heating air incineration, over-temperature in the box, water shortage prompt system.

Many customers will not be able to distinguish the difference between high and low temperature test chamber and high and low temperature alternating test chamber when purchasing equipment, and what is the difference between high and low temperature test chamber and high and low temperature alternating test chamber?

The main difference between the high and low temperature test chamber and the high and low temperature alternating test chamber is the control part and the refrigeration part. The control part of the high and low temperature test chamber is controlled by a digital display instrument, while the control part of the high and low temperature alternating test chamber is controlled by a programmable controller. The digital display instrument is generally manually controlled, which can execute a single command, while the programmable controller test is fully automatic control, which can set the test parameters and test times in advance, and then work according to the set program.

The refrigeration part of the high and low temperature test chamber is relatively simple, which can only be constant at a certain temperature, while the high and low temperature cross-ridge lead transformation test chamber needs to measure a certain cooling capacity in order to output different cooling capacity at different temperature points to achieve alternating. The structure and technical parameters of the box dispersed front are the same for both of them.

After reading this article, I don't know if you know what is the difference between high and low temperature test chamber and high and low temperature alternating test chamber?

There are many people who do not know the trembling path of the high and low temperature alternating test chamber, which is a commonly used test chamber in our life, which is used to detect the temperature changes of high temperature, low temperature, alternating damp heat of products or materials. Today, I will mainly introduce to you the use and characteristics of the equipment, hoping to help users better use this Dongtan product.

The purpose of the device:

High and low temperature alternating test chamber is a necessary test equipment for scientific research, aviation, automotive and other fields. It is used to test the parameters and properties of electronic, electrical and other product materials after changing in the environment of high temperature, low temperature, alternating humidity and heat simulated in the test chamber.

Features of the device:

1. The design of the air duct structure can effectively prevent the frosting of the test sample in the test;

2. The structure is simple, and the appearance is neat and generous.

3. Environmentally friendly refrigeration, in line with the requirements of Sentong Environmental Protection Convention;

4. The man-machine interface of the test chamber, vibration resistance, and automatic control of the system effectively solve the problem of difficult learning and training for operators.

The above is the product use and characteristics of the high and low temperature alternating damp heat test chamber, which has been introduced, and I hope to help the majority of users to better use this product.

The high and low temperature alternating damp heat test chamber is actually equivalent to the programmable constant temperature and humidity test chamber. I give you the parameters of the high and low temperature alternating test chamber, and what you are consulting is to add the humidity function to this parameter, so what you consult is the programmable constant temperature and humidity test chamber.

High and low temperature alternating test chamber.

It is suitable for electronics, electrical appliances, instruments, food, vehicles, metals, chemicals, building materials, aerospace, medical ......and other products, for quality testing.

High and low temperature alternating test chamber features:

1.The inner tank of the test chamber is made of high-grade stainless steel plate, and the shell is sprayed with SUS304 stainless steel plate oil hair pattern plate or A3 steel plate.

2.The door sealing strip is made of silicone rubber that is resistant to high and low temperatures, and has good sealing performance.

3.The humidification method of pouring groove is adopted.

4.It is equipped with an observation window and a lighting lamp to facilitate the observation of the sample in the box.

5.Main control instrument: The high and low temperature test chamber adopts Taiwan's "Panduit" instrument. The alternating high and low temperature test chamber adopts the Korean "ternary" press-built programmable temperature controller.

The main technical parameters of high and low temperature alternating test chamber equipment.

Model RTE-KGDW80

rte-kgdw150

rte-kgdw225

rte-kgdw408

rte-kgdw800

rte-kgdw1000

Studio size: mm

400x400x500

500x500x600

600x500x750

800x600x850

800x1000x1000

1000x1000x1000

Dimensions: mm

900x900x1530

1070x990x1530

1170x990x1780

1370x1090x1880

1370x1490x2030

1570x1490x2030

Technical Indicators. Temperature range.

20 Type A -40 Type B -60 Type C -70 Type D +100 (+150).

Temperature uniformity.

2. Temperature fluctuation.

Temperature rise and fall rate.

3℃/min、5℃/min、10℃/min)

Equipped with insulation.

Fiberglass wool rigid polyurethane foam.

Cooler multi-stage diaphragm evaporator.

Air circulation. Single-cycle, elongated shaft, stainless steel centrifugal vanes.

Refrigeration method. Unit refrigeration mode: dual element (cascade) refrigeration mode.

Compressor French "Taikang" fully enclosed refrigeration compressor.

Controller "TEMI" programmable temperature and humidity control instrument.

Sensor imported PT100 platinum resistor.

Security devices. Leakage protection, water shortage protection, over-temperature protection, fast fuse, compressor overpressure protection.

Standard configuration. Internally heated insulating glass observation window: 250x300 (mm), test hole 50mm, sample holder 2, illuminator.

Power supply: 220V·50Hz, 380V·50Hz

High and low temperature alternating damp heat test chamber is simply an ordinary high and low temperature test to set a time for him, in a certain period of time constant temperature, and then rise or fall to another temperature for a certain period of time, this is alternating, damp heat is to add humidity to high and low temperature, specific parameters can refer to our company's ** information:

The high and low temperature alternating damp heat test chamber is mainly a special test system for the temperature and humidity of the product, which is used to provide high temperature, low temperature, constant temperature, constant humidity, temperature cycle, temperature and humidity alternating temperature and humidity test environment, and meet the requirements of relevant standards for the test chamber, mainly suitable for electrician, electronic products and parts to carry out cold resistance test, temperature and humidity changes or drastic changes under the condition of adaptability test; It is especially suitable for environmental simulation temperature and humidity tests of electronic and electrical products.

Technical parameters of high and low temperature alternating damp heat test chamber developed by Suzhou Zhongchuang Alliance Laboratory: 1Internal Volume:

1000 liters. 2.Internal dimensions (mm):

1000*1000*1000(D*W*H) 3External size (mm): 1500*1500*2100 (D*W*H) 4

Temperature range: -40 120 (arbitrary adjustment) 5Temperature uniformity (at no load):

2℃ 6.Temperature fluctuation: 7

Temperature uniformity: 8Temperature rise and fall rate.

approx. 3 min (at no load); Approx. 1 min (at no load).

For the test chamber, please find Zhongchuang Alliance.

<> the key difference is that the temperature speed of the elevator is different, the temperature raising speed of the high and low temperature test chamber is different, and the temperature reduction speed is different; The temperature increase rate of the rapid temperature change test chamber can exceed 16 30 mln, and the deheating rate can exceed 16 30 mln.

The application of manufacturing industries is different, and the high and low temperature test chamber is mainly used in the manufacturing industry of cars, household appliances, colleges and universities, etc.; The rapid temperature change test chamber is mainly used in aerospace, military, scientific research and other enterprises;

The difference between the refrigeration unit and the heating system software is the use of parts, the refrigeration compressor is used for the high and low temperature test chamber, and the compressor is selected for the rapid temperature change test chamber;

The water cooling method is different, the air-cooled water cooling can only exceed the experimental regulations for the high and low temperature test chamber, and the air-cooled water cooling is required for the rapid temperature change test chamber;

The price is different, and the price of high and low temperature test chambers should be about 5 times lower than the price of rapid temperature change test chambers.

Each item must be different under comparison, do you have some understanding?

The sensor of the high and low temperature alternating damp heat test chamber is an indispensable part of the instrument, which is mainly dependent on temperature and temperature sensor. The main applications of temperature sensors are platinum electric groups and hot couples.

There are two measurement methods for temperature sensors to measure the humidity of high and low temperature alternating damp heat test chambers, the main methods are the blind guessing method of wet and dry bulb temperature and the direct measurement method of solid-state electronic sensor. In the case that the accuracy of the psychrometer method is not high, the high and low temperature alternating damp heat test chamber should gradually use a solid-state sensor to replace the wet and dry bulb to measure the humidity.

In the case of high technical requirements for temperature testing, the precision sensor system will become an indispensable part of the high and low temperature alternating damp heat test chamber. Therefore, it can ensure the accuracy and timeliness of temperature information. In the sensor test system of the test chamber, the main sensor refers to the temperature.

The temperature sensor of the high and low temperature alternating damp heat test chamber can be divided into resistance and electric couple. The domestic high and low temperature test chamber mostly uses platinum resistors. PT100 can be used for a wide range of applications ranging from -200 degrees Celsius to +650 degrees Celsius for temperature accuracy, performance stability, and a wide range of applications, but the cost will be higher.

However, the thermocouple in the high and low temperature alternating damp heat test chamber uses the method of measuring the thermal electromotive force. It uses a wider temperature measurement range and is higher than +1800 degrees Celsius. High accuracy, can also be long-distance, as well as multi-point centralized monitoring and automatic control, but because the free end needs to be temperature compensation, and the measurement accuracy is relatively low in the case of low temperature and normal temperature range.

The working capacity of the high and low temperature alternating damp heat test chamber is: each is for temperature raising, humidity reduction, humidification and humidity reduction;

The following is an explanation of its three major effects:

First, the effect of temperature raising.

1.The heating equipment is an important part of the operation of the high and low temperature alternating damp heat test chamber to raise the temperature;

2.This is when the control board obtains the temperature increase command, the working voltage is output to the car relay, about 3-12 volts AC power is added to the intermediate relay; Its communication end is equal to the transmission line access; The AC contactor is also separately sucked, and the working voltage on both sides of the electric heater makes it hot, and the heat is sent to the box according to the centrifugal fan of the circulating system, so that the high and low temperature alternating damp heat test chamber is warmed;

3.The temperature is as fast as you preset; The control board is adjusted according to the on-on of the added intermediate relay;

4.People adjust the calorific value by looking at the heating load rate on the display; It is controlled at about 89 degrees Celsius, and how to operate it smoothly below 89 degrees Celsius? On one side according to what is the hot load rate of the intermediate relay; In addition, according to the refrigeration compressor, the refrigeration circulation system is desupervised, and the temperature is reduced to achieve a stable balance; Temperature stable.

Second, the effect of temperature reduction.

The refrigeration compressor is the cardiovascular system of the refrigeration system, which sucks into the low-temperature bottom pressure vapor and becomes ultra-high pressure vapor, releases the heat according to the condensation into the liquid, and brings the heat according to the centrifugal fan, so the lower edge of the high and low temperature alternating damp heat test chamber is due to warm air, and then according to the throttle valve to the bottom pressure liquid, the second according to the evaporator becomes the ultra-low temperature bottom pressure vapor and returns to the refrigeration compressor; The refrigerant is digested and absorbed in the evaporator for the whole process of vaporization, and the whole process of digestion and absorption of heat is heavy, and the high and low temperature alternating damp heat test chamber achieves the purpose of refrigeration and carries out the whole process of desuperheating.

3. Humidification and dehumidification.

The humidity reduction system is carried out by the refrigeration system, and the evaporator is placed in the high and low temperature alternating damp heat test chamber; Relatively cold, the high and low temperature alternating damp heat test chamber in the high and low temperature vapor meets the cold blocks and condenses into liquid; In this way, the high body moisture of the box is rarely felt, so it can reduce humidity.