PC-172D low drift high precision intelligent temperature controller instruction manual
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(Pt100 index number)
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I. Overview
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PC-172D low drift high precision intelligent temperature controller with Pt100 platinum resistor, used for precision thermostat temperature control.
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This instrument is developed on the basis of PC-152DG and PC-162D, not only the control accuracy is further improved, but also has the advantages of strong universality: the same output drive signal UOUT can directly trigger the thyristor, but also drive the solid state relay; Add the function of setting in the control characteristic selection - for heating control when the reaction characteristic is used; Positive acting characteristics for refrigeration control; Add the setting function when selecting the ultrahigh temperature alarm output contact characteristics: the contact is closed at ultra-high temperature, or the contact is disconnected at ultra-high temperature. In addition, the upper limit of the temperature measurement value is increased to modify the parameter FC.
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The instrument adopts the mixed structure of digital and analog, and its measuring circuit is composed of low-temperature drift and high-stability components, and has super temperature drift suppression ability. The instrument adopts the nine-O (point-and-shoot) PID DI control mode, and the power supply voltage factor is introduced into the control system.
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Therefore, the instrument has the advantages of high resolution, short preheating time, small temperature drift, good long-term stability, stable reading, short transition process during temperature control, no impact temperature, small fluctuation, no need to manually adjust PID parameters, and almost all technical indicators are in the domestic position.
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The instrument has upper and lower deviation auxiliary control, which can be used for ultra high temperature alarm and automatic switching of auxiliary heating respectively, and can also be used for automatic switching of refrigerator \"single hair\" - \"two hair\".
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The overall size of the instrument (width × height × depth) is 96×96×130mm, and the dial opening size is 90×90mm.
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Two, the main technical indicators
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Index number: Pt100
Signal line: three-wire system, line resistance is divided into 0~ 0.2ω, 0.2~ 0.4ω, 0.4~0.6Ω three kinds.
Measuring range: -100 ~ 100℃, 0 ~ 100℃, 0 ~ 300℃
Temperature display resolution: 0.001℃
Measurement accuracy: 0.2
Power-on preheating time (duration from power-on to measurement stop drift) : ≤30 minutes
Temperature drift: better than 0.002℃\/℃
Time drift: better than 0.003℃\/h
Temperature control transition process time (duration from control to stability) : ≤16 minutes
Temperature fluctuation limit: ±0.005℃\/30min
Main control mode: intermittent DC level UOUT is 6V, trigger can control silicon or solid state relay.
Auxiliary control (alarm) output mode: two-position relay contact (on or off), capacity 220V·AC\/3A
Measurement value correction (zero adjustment and full adjustment) range: -3.000℃ ~ +3.000℃ (factory 0.000℃)
Upper deviation alarm HA: 0.2℃ ~ 3.0℃ adjustable (factory +3.0℃)
Lower deviation auxiliary heating LA: -0.2 ~ -3℃ adjustable (factory is -3.0℃)
Communication interface: RS232 or RS485 (optional)
Power supply: 50 ~ 60HZ, 220V±10% step voltage less than 4V
Operating environment: Temperature 0 ~ 50℃, humidity below 85%RH, no strong radiation, no strong heat convection, no corrosive gas occasions.