ABB SM500F User Manual page 42

Field Mountable Videographic Recorder
SM500F
Analog/Digital Inputs
General
Number of inputs
4 (1 as standard, 3 optional)
Input types
mA, mV, voltage, resistance, THC, 3-wire RTD, 4-wire RTD, volt-free digital, 24 V DC digital
Thermocouple types
B, E, J, K, L, N, R, S, T
Resistance thermometer
PT100
Other linearizations
√x, x
3 5
/ , x / , custom linearization
2 2
Digital filter
Programmable 0 to 60s
Display range
–99999 to +999999
Common mode noise rejection
>120 dB at 50/60 Hz with 300 Ω imbalance resistance
Normal (series) mode noise rejection
>60 dB at 50/60 Hz
CJC rejection ratio
0.05 °C/°C
Sensor break protection
Programmable as upscale or downscale
Temperature stability
0.02 %/°C or 2 µV/°C
Long term drift
<0.2 % of reading or 20 µV annually
Input impedance
>10 MΩ (millivolts inputs)
>10 MΩ (voltage inputs)
44 Ω(mA inputs)
40
7 Specification
IM/SM500F Issue 10.1