High-low temperature chamber is a kind of durability testing equipment used to simulate high-low temperature environment for materials, electronics, chemical industry, food, medicine and other products. Here are some common problems you may encounter and how to calibrate them:
common problem
The temperature reading is inaccurate.
The temperature is unstable.
The device is heating or cooling unevenly.
The device is leaking or the Water Tank is insufficient.
An error occurred in program operation.
Calibration method
Temperature calibration: Place the thermometer in the high-low temperature box, and set the high-low temperature box to a known temperature. After waiting for a period of time, compare the thermometer reading with the temperature reading displayed by the high-low temperature chamber. If there is a difference, a calibration adjustment is required. Calibration can be performed by adjusting the temperature calibration parameters in the controller.
Equipment uniformity calibration: Place several thermometers inside the high-low temperature box, and set the high-low temperature box to a known temperature. After waiting for a period of time, compare whether the readings of each metering point are consistent. If there is a difference, a uniformity calibration adjustment is required. This can be achieved by adjusting how and where the heating, cooling and fans work, as well as adjusting the position of items inside the high-low temperature cabinets.
Equipment Water Tank capacity calibration: fill the Water Tank in the high-low temperature tank with water, and record the water capacity. Then set the high-low temperature box to a certain temperature, after measuring for a period of time, pour out the Water Tank and record the remaining water capacity. Subtract the previously recorded water capacity from the remaining water capacity to obtain the amount of water used by the high-low temperature chamber at that temperature. If the amount of water used is inconsistent with the capacity in the specification, a Water Tank capacity calibration adjustment is required. It can be calibrated by adjusting the Water Tank capacity parameter in the controller.
North and South Chao reminds you: high-low temperature boxes need to be calibrated and maintained regularly. At the same time, it is necessary to regularly clean the interior of the equipment, check the performance and condition of heating, cooling, control, sensors and other equipment, and replace or repair problematic parts in time. In addition, it is recommended to carry out maintenance according to the operation manual of the equipment and the maintenance instructions provided by the manufacturer to ensure the long-term stable operation of the equipment.
Precautions
In the process of using the high-low temperature box, you also need to pay attention to the following points:
Reasonably arrange the placement of the samples to ensure that the samples can be subjected to a uniform temperature distribution.
2. Do not accumulate too much debris or samples inside the high-low temperature box, so as not to affect the operation of the equipment and the accuracy of the data.
According to actual needs, the temperature range and accuracy of the high-low temperature box should be reasonably selected to avoid inaccurate test data due to mismatching of equipment parameters.
Before testing, preheat or precool the equipment to ensure that the equipment can reach the required temperature conditions.
During the use of equipment, record temperature changes and test data in time, and analyze and process them as needed.
In short, the high-low temperature box is a commonly used test equipment, but it is necessary to pay attention to the use and maintenance of the equipment during use to ensure the stability of the equipment and the accuracy of the test data.
