Product data

DeltaV Product Data Sheet
October 2014 – Page 16 S-Series Electronic Marshalling
RTD Input CHARM
Specifications for RTD Input CHARM
Sensor types RTD input (Types listed in Table)
Sensor Configuration 2 wire, 3 wire, or 4 wire
Full Scale signal range See Table next page
Accuracy See Table next page
Repeatability 0.05% of span
Resolution 24 bit A/D converter / Depends upon the sensor type
Calibration None required
Sensor excitation current 0.5 mA in 2-wire and 4 wire configurations
0.25 mA in 3-wire
DC/50/60 Hz Common mode
rejection
90dB typical
Isolation Each sensor galvanically isolated and factory tested to 1000 VDC
Open sensor detection Yes
CHARM power req. 22 mA max @ 24 VDC
CHARM Heat Dissipation 0.30 W