DeltaV™ IS AO 4-20 mA HART CHARM

An IS (intrinsically safe) Analog Output Characterization Module (CHARM) designed for a 4-20 mA, with or without HART, output.

Specs

Sensor Types

4 to 20 mA with or without HART

Nominal Signal Range (span)

4-20 mA, (0-20 mA optional)

Full Signal Range

0 to 22 mA

Load Resistance

750 Ohm max.

Voltage to Load

15 V (min) @ 20 mA

Accuracy over temperature range

0.25% of span (0 to 60 °C), 0.5% of span (-40 to 70 °C)

Resolution

16 bit A/D converter

Calibration

None required

Isolation

Galvanically isolated according to EN 60079-11. Voltage peak value 375 VDC.

CHARM Power req.

56 mA max @ 24 VDC ±10%

CHARM Heat Dissipation

1.1 W

HART Support

HART v7 pass-through for AMS, HART v7 variable and device status available to control

HART Data Update Rates

Update rates are faster than every second dependent on HART communication loading and device type

Eliminate marshalling and add I/O anywhere in the plant without affecting control room cabinets
No marshalling cabinet or cross-wiring, fewer wires, much less work and fewer contact points for potential failures
Intrinsically Safe (IS) I/O meets Class 1 Division 2 and IEC Zone II environmental conditions when you have to run I/O in hazardous areas
Intrinsically Safe (IS) I/O meets Class 1 Division 2 and IEC Zone II environmental conditions when you have to run I/O in hazardous areas