how to calibrate temperature controller
When we use the Temperature controller , we don't know how to operate it and don't know how to calibrate it. Has the calibration been accurate? I don't know where to refer to.
Next, I will guide you all on how to accurately calibrate the Temperature controller
We are a factory specializing in the production of Temperature controller. Take our Sinny TX4 Temperature controller as an example
During the operation of a Temperature controller, it will reach a certain temperature. So, how can we verify whether it is calibrated correctly and accurately
Just go to the supermarket and buy an infrared thermometer. Scan it at the area you want to measure and it will come out. This thing is very accurate and precise, with a normal deviation of ±1
OK. After we measure the temperature with an infrared thermometer, how do we adjust the Temperature controller to correct the temperature?
Look at this picture. The PV value displayed on the instrument is 27℃. However, if the actual temperature obtained through the external thermometer gun is 29℃, then the temperature deviation is: 29℃-25℃=4℃. At this point, we need to adjust the temperature controller. Calibrate and correct the temperature controller
PV: The actual temperature is "the current real situation".
SV: Target temperature, which is "the way you want it to be"
Press and hold the S button key for 3 seconds, and the page PV on the instrument will display the P-1 screen. Then click the S button key to enter the parameter group 1 menu. At this time, the interface PV will display AL1.
Continuously tap the S button key. Here, note that it is "tap", not "hold down", until the PV screen displays the page as
This operation button is used to perform the input correction function. Based on the difference between the actual temperature and the displayed temperature, the read temperature value can be adjusted through the up and down keys
For instance, if the current actual temperature is 30℃ and the PV display value is 27 ℃, with a difference of 3, consecutively pressing the up key will adjust the SV value to 3
Then hold down the S key for 3 seconds. It will save the set parameters and return to the working mode of the thermostat. Then the screen will display that the PV temperature is 30℃, indicating that the temperature has been successfully corrected to 30℃
In fact, the temperature controller itself has no error. The correction and calibration mainly correct the error of the temperature sensor (thermocouple, thermal resistance) input from the outside.
The correction only affects the display value and control logic, and does not change the original input signal of the sensor.
The correction only affects the display values and control logic: In simple terms, it only changes the "way the brain expresses itself and its working rules.
We know that there is a core component in a thermostat called a "sensor", whose function is to sense the temperature and obtain the component. It will transmit the perceived temperature to the brain of the thermostat, ----, which is the core component (control chip) inside the thermostat. If it is not calibrated for a long time, this sensor will always sense this temperature. Then the temperature transmitted to the temperature controller chip is always this