What is the effect of the humidity of the constant temperature and humidity test chamber on the samp

1.In order to avoid machine failure in the constant temperature and humidity test chamber, please provide a power supply within the rated voltage range. 2.

In order to prevent electric shock or malfunction and malfunction, do not turn on the power supply until the installation and wiring are completed. 3.Before turning on the machine, check if the power supply is stable.

4.The wiring must be correct and must be grounded. Failure to ground may cause electric shock, misoperation accidents, abnormal display or large measurement errors.

5.When the machine is installed and set up, be careful not to let dust, threads, iron filings, or other things enter, otherwise wrong operation or malfunction will occur. 6.

Please try not to open the door of the test chamber when the instrument is working, opening it at high temperature may cause scalding to the operator, opening it at low temperature may cause frostbite to the staff, and may cause the evaporator to freeze, affecting the refrigeration effect. ...

The impact must be very large, because when your product is tested for humidity, there will be a specific range. For example, some tests require: about 25 humidity 50 5%rh, if your humidity is not within the range specified in this test, then it loses the meaning of doing the test, and you can't get the target value you need and the authenticity that the product should show.

Generally, the humidity range of the constant temperature and humidity test chamber is mainly between 30-98%RH, which can basically do most of the humidity range tests on the market, and the special constant humidity and humidity test chamber can also reach 20-98%.

What is the temperature range of the constant temperature and humidity test chamber? Pay attention to the use process**?

Generally, the control range of the constant temperature and humidity test chamber is 0 100; Pay attention to the following points during use:

1.During installation, it is necessary to ensure the tightness of the shell and the flatness of the internal body.

2.Detect if there is any abnormality in the electrical components before start-up.

3.Heating should not be too fast or too high to avoid affecting the sample and causing damage.

4.Before the test, the gauge and measuring instrument should be calibrated.

5.Check whether the fan and heating sheet are working properly, and deal with any problems immediately.

First of all, explain what is a constant temperature and humidity test chamber: constant temperature and humidity means that temperature and humidity are constant. However, many factors will affect temperature and humidity, so in most cases, constant temperature and humidity refer to the temperature and humidity control within a certain range of changes, such as temperature 20 1, humidity 50 3% can be called constant temperature and humidity.

The question of purchasing attention depends on which aspect you pay attention to, generally about the purchase of constant temperature and humidity test chamber, you need to pay attention to the following points:

1. When the air relative humidity and temperature control clarity of the industrial production space are required to be high at the same time, the industrial constant temperature and humidity air conditioning series products can be selected.

2. The setting range of this series group: temperature 18-28 degrees plus or minus 1 degree, relative humidity of 40-70% plus or minus 5%.

3. Determine the rated air volume.

4. Determine the cold, heat and temperature loads.

5. Determine the condensation method.

6. Determine the structural type of air supply.

Attention should be paid to the above issues in the purchase of constant temperature and humidity test chambers, and at the same time, it is also necessary to understand the problems that need to be paid attention to in the process of use. When the constant temperature and humidity test equipment suddenly fails during the test operation, the corresponding fault display prompt appears on the control instrument and there is an audible alarm prompt. The operator can quickly check which type of fault belongs to the troubleshooting chapter in the operation and use of the equipment, and then ask professionals to quickly troubleshoot the fault to ensure the normal progress of the test.

There will be other phenomena in the use of other environmental test equipment, so it is necessary to analyze and eliminate specific phenomena.

I am Haida Instrument, the production of constant temperature and humidity chamber, the following is for you to introduce, I hope it will help you!

How to control the temperature and humidity inside the constant temperature and humidity chamber?

The constant temperature and humidity box is the product placed in the specified temperature and humidity, to see the high temperature resistance, low temperature resistance, and humidity resistance of the product, then the constant temperature and humidity machine has the ability to heat, cool, humidify, and reduce humidity at the same time.

The heating device is the key link to control whether the constant temperature and humidity machine is heating up; It is that when the controller gets the heating command, it will output the voltage to the relay, about 3-12 volts of direct current is added to the solid state relay; Its AC end is equivalent to a wire on; The contactor is also engaged at the same time, and there is a voltage at both ends of the heater to heat it, and the heat is brought to the box through the circulating fan, so that the constant temperature and humidity machine heats up, and the temperature is almost up to your set value; The controller is adjusted by adding a solid state relay on and off; We look at the heating output on the screen to adjust the heat generation in the constant temperature and humidity machine; This is the temperature control above 89 degrees, how to control the temperature stability below 89 degrees? The constant temperature and humidity machine is how much power is generated by the solid-state relay on one side; In addition, the dynamic balance is achieved through the cooling of the compressor refrigeration cycle; The temperature is constant. Cooling is an important part of the constant temperature and humidity machine, and it is an important parameter to determine the performance of a constant temperature and humidity machine, which includes four major components: compressor, condenser, throttling device and evaporator.

The compressor is the heart of the refrigeration system, which inhales low-temperature and low-pressure gas, becomes high-temperature and high-pressure gas, releases heat through condensation into liquid, and takes away heat through the fan, so the constant temperature and humidity machine is the cause of hot air, and then throttles to low-pressure liquid, and then becomes low-temperature and low-pressure gas through the evaporator and finally returns to the compressor; The refrigerant absorbs heat in the evaporator to complete the gasification process and absorb heat to achieve the purpose of refrigeration and complete the cooling process of the constant temperature and humidity machine.

The humidification system is about the same as the heating system; It is the process by which the heater heats the water into steam; Complete the purpose of humidification of constant temperature and humidity machine. The humidity reduction system is also completed by the refrigeration system, and the evaporator is placed in the constant temperature and humidity machine; It is relatively cold, and the high-humidity gas in the constant temperature and humidity machine will condense into liquid with cold objects; In this way, the high humidity gas of the repeated box will be very small, so as to achieve the purpose of humidity reduction.

Electric heating, the same as boiling water, sends water vapor to the test chamber through the pipeline, and then dehumidifies through the compressor to achieve the function of constant temperature and humidity.