NOTE:1.Using Low Offset Voltage Precision Rail-to-Rail Operational Amplifier 8551 (Substitution 358) to Achieve Proportional Linear Amplification Temperature Control is More Sensitive Canceling 358 Operational Amplifier to Correct Offset Voltage High-Performance Low Level and Severely Affect Temperature Accurate Setting Parameters2. Using electronic temperature calibration Cancel the temperature calibration of the mechanical potentiometer Eliminate the temperature drift caused by the uncertainty of the resistance value of the mechanical potentiometer3. upgrade cpu to 15w408as more powerful memory4 .Maintain the same size of the installation of the digital encoder of the air plug. It can be replaced or upgraded directly.Instructions for useBecause the digital display information is less difficult to set up, it is easy to make mistakes. It is often used to burn red iron core. It is convenient to use. It hardens the common parameters. Only the key temperature correction adopts simple and intelligent settings.Added front panel encoder switch function for ease of use1. Turn on the power without a handle or heating core Digital display 5002. If the connecting handle is heated to the default temperature of 350 within seconds3. or so rotary encoder will change the set heating temperature Step 5 degrees4. Sleep time 3 minutes Shutdown time 5 minutes after sleep5. Press the encoder (less than one second) Forced shutdown display OFFWake-up with vibration handle or encoder Rapid heating to set temperature6 .temperature calibrationPress the encoder for 3 seconds. The thermostat forcibly heats up to 350 degrees. The nixie tube flashes and enters the temperature calibration display. Default value 420 (400-499) This value is not temperature. Calibration parameters are corrected by changing the value of the temperature error of the actual temperature sen
