If there is a large temperature overshoot or a large temperature fluctuation in the temperature control process of the high and low temperature test chamber, the self-diagnosis function can be started. The specific operations are as follows:
Turn off the power switch, open the box door, let the device naturally cool to the ambient temperature → close the box door, turn on the power switch, set the temperature to the commonly used temperature value → adjust the self-tuning parameter to 1 according to the control parameter adjustment method → ​​work normally In the state, press and hold the minus key for 5 seconds to enter the auto-tuning state. At this time, the PV display shows ATU and flashes → after auto-tuning is completed, the meter automatically returns to the normal working state → in the auto-tuning state, press any key Are invalid.
High and low temperature test box automatic wind speed adjustment function:
During the heating process of the high and low temperature test chamber, the circulating fan runs at high speed, accelerates the air convection in the working room, shortens the heating time, and improves the working efficiency; when the temperature in the working room is close to the control temperature, the instrument automatically adjusts the circulating fan from high speed to low speed Operation, make the air in the working room smooth convection, effectively extend the life of the circulation fan; if the customer does not need to use the automatic wind speed adjustment function, according to the control parameter adjustment method, the high and low speed control parameters can be adjusted to 999.9, the circulation fan will always be in High-speed operation state.
The above self-diagnosis and automatic wind speed adjustment functions are all auxiliary functions of the high and low temperature test box, which can make the high and low temperature test box work more efficiently.
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