1. SET temperature: Press the Set key to set or view the temperature set point. Press SET key and the digital tube character starts to flash, indicating that the instrument enters the setting state, press △ key to increase the setting value, press △ key to decrease the setting value, long press △ key or key data will change quickly, press SET key again and the instrument will return to the normal working state.
2. Back difference control (XMT201-C) : press the SET key for 3 seconds to enter the inner parameter setting state. The first parameter that appears and flashes is C00, that is, the return difference value, the return difference control parameter should be carefully adjusted, the instrument controls the heating output value to the set value, when the temperature falls to the set value and the difference value is reduced to start heating again, the output (relay) is not operating in the return difference range, which can reduce the number of relay operations to extend the life of the relay. Example: If the set value is 80.0 ° C and the return difference is 0.5, the relay is released when the instrument control is heated to 80.0 ° C, and the relay draws again when the temperature drops to 80.0 ° C -0.5 ° C =79.5 ° C. The larger the return difference value, the less the relay operation times, and the larger the return difference value, the lower the control accuracy. After adjusting the return difference parameters, press SET key for 3 seconds to return the instrument to normal working state.
3. Lead setting (XMT201-E) : Press the SET key for 3 seconds to enter the inner parameter setting state. The first parameter that appears and flashes is E00, that is, the lead of the heating stop. The lead parameter should be carefully adjusted. In order to reduce temperature overshooting, the instrument will cut off the heating in advance when controlling the heating output. When the temperature drops below the leading amount, it starts to heat again, and the output (relay) does not operate within the range of the set value and the leading amount, which can reduce the number of relay operations to extend the life of the relay. Example: If the set value is 50.0 ° C and the lead is 0.5, the relay is released when the instrument control is heated to 49.5.0 ° C, and the relay draws again when the temperature drops to 50.0 ° C -0.5 ° C =49.5 ° C. The greater the lead, the less the number of relay operations, and the greater the lead, the lower the control accuracy. After adjusting the lead parameter, press SET key for 3 seconds to return the instrument to normal working state
4. Time Ratio setting (XMT201-P) : Press the SET key for 3 seconds to enter the inner parameter setting state. E: indicates the scale with offset, and the E parameter can translate the actual control point. Even if the center of the time ratio is shifted, the E value can be positive or negative depending on the heating system. P: is the proportional band, that is, the proportional control value, in order to facilitate understanding and also to make the proportion with a larger representation space, the proportion of the instrument is a unilateral proportion band, that is, the actual proportion band is 2 times the P value. With the actual control point as the center from bottom to top, the output heating ratio is uniformly distributed from 0% to 100% within the P-value range. T: For the heating output cycle cycle, that is, the relay working cycle cycle, the control effect is good with a small T value, but the relay with a small T value will reduce its life due to frequent work. Generally, the T-value is 20-60 seconds. Example: If P is set to 4.0 (the actual scale band is 8.0), the temperature is set to 60.0 degrees, and the E is set to 2.0, the actual control point is 58.0 degrees, and the instrument enters the scale band control state when the temperature reaches 54.0 degrees.
5. Intelligent control parameter setting (XMT201-D) : Press the SET key for 3 seconds to enter the inner parameter setting state. E: This parameter is the advance of heating stop when P=0, when P is not equal to 0, the instrument is intelligent PID working mode, and when P is not equal to 0, E parameter is meaningless. P: is the proportional band, that is, the proportional control value. The instrument is centered on the set point and the P value is distributed on both sides of the set point. In the range of P values, the instrument works in PID mode. T: For the heating output cycle cycle, that is, the relay working cycle cycle, the control effect is good with a small T value, but the relay with a small T value will reduce its life due to frequent work. Generally, the T-value is 20-60 seconds. To simplify operation, the instrument's integral time (I) and differential time (D) are designed to hide the parameters, with their default values: I=180, D=45
6. Error correction: The display value can be corrected when confirming that the value displayed by the instrument is not the correct measurement value. Press the SET key for 3 seconds to enter the inner menu of the instrument. The first parameter that appears and flashes is E00, that is, the lead amount. Press the SET key again and the parameter that appears and flashes is the error correction parameter. The error correction range is -9.9 ° C to 9.9 ° C, after the correction is completed, press the SET key to exit. Instrument factory correction value of 0.0, in use to prevent the display of correct instrument correction to incorrect.
1. Lower limit deviation alarm setting: Press the SET key to display SLP, the green display displays the value of this parameter, and select shift, increment, and decrease keys to set or modify this parameter. This parameter indicates the difference between the alarm point and the main control set point.
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2. Upper Limit deviation alarm setting: Press the SET key to display SHP. The green display displays the value of this parameter. This parameter indicates the difference between the alarm point and the main control set point.
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3. SET the scale range: press the Set key to display \"P\
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4. SET the integration time: press the Set key to display \"I\
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5, differential time setting: press the SET key to select the display \"D\
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6, proportional cycle setting: press the SET key to display \"T\
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7, self-tuning Settings: press the SET key to select the display \"Aτ\