RT31818-channel RTD inputType RT318Category RTD ( Resistance Temperature Detector ) inputResistance temperaturedetectors Pt100Measuring method Three-wire systemLoad current 1 mATemperature measurementrange-50° to +270°C (-58° to +518°F)Converted data 800 to 4000Input channel 8 channels / moduleInsulation Photo-coupler insulation (not isolated between the channels)Conversion rate 400 ms / 8 channelsResolution 12 bits / 0.025 % ( 0.1 °C / count )Wire resistance correctionrange Within 4ΩOverall accuracy ±0.3 % (at 25 °C)Tepaerature drift ±100 ppm / °CInternal current consumption 5 Vdc, 600 mA or lessInsulation resistance 10 MΩ (500 Vdc)Withstand voltage 500 Vac, 1 minutes ( between internal and external circuits)Weight 500 gInternal circuitInternal circuitBuffermemory5 Vdc+15V-15V0VAMPInput filter1A1B1C1GPC : Photo-couplerCH1CH88A8B8C8GMultiplexerDC/DCAGAGRrefRrefADC PCCurrent source1 mA1 mAWire breakdetection PC