RT318
8-channel RTD input
Type
Category
Resistance temperature
detectors
Measuring method
Load current
Temperature measurement
range
Converted data
Input channel
Insulation
Conversion rate
Resolution
Wire resistance correction
range
Overall accuracy
Tepaerature drift
Internal current consumption
Insulation resistance
Withstand voltage
Weight
Internal circuit
1A
1B
CH1
1C
1G
8A
8B
8C
CH8
8G
1
RT318
RTD ( Resistance Temperature Detector ) input
Pt100
Three-wire system
1 mA
-50 ° to +270 ° C (-58 ° to +518 ° F)
800 to 4000
8 channels / module
Photo-coupler insulation (not isolated between the channels)
400 ms / 8 channels
12 bits / 0.025 % ( 0.1 ° C / count )
Within 4 Ω
± 0.3 % (at 25 ° C)
± 100 ppm / ° C
5 Vdc, 600 mA or less
10 M Ω (500 Vdc)
500 Vac, 1 minutes ( between internal and external circuits)
500 g
Current source
1 mA
1 mA
Rref
AG
Rref
AG
AMP
ADC
PC
Wire break
PC
detection
5 Vdc
+15V
-15V
DC/DC
0V
PC : Photo-coupler