Product data

DeltaV Product Data Sheet
October 2014 – Page 21 S-Series Electronic Marshalling
Analog Output 4-20 mA HART CHARM
Specifications for AO 4-20 mA HART CHARM
Sensor Types 4 to 20 mA with or without HART
0 to 20 mA
Nominal signal range (span) 4 to 20 mA, (0 to 20 mA option)
Full signal range 0 to 24 mA
Accuracy over temperature range 0.25% of span (0 to 60 ºC)
0.5% of span (-40 to 70 ºC)
Resolution 16 bit D/A converter
Calibration None required
Available field power
20 mA at 15 VDC supply into 750 Ω load
Field Circuit Protection - 24 mA Current Limiting Circuit
- Field wiring disconnect
CHARM power req. 42 mA max @ 24 VDC
CHARM Heat Dissipation 0.48 W
HART support HART v7 pass-through for AMS
HART v7 variable and device status available to control
HART data update rates 500 ms
Simplified Circuit and Connection Diagram for HART AO CHARM 0/ 4 to 20 mA