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DeltaV™ AO 4-20 mA HART CHARM
PDP_Charm_AI HART 4-20
An analog output Characterization Module (CHARM) for a 4-20 mA, with or without HART, output.
DeltaV™ AO 4-20 mA HART CHARM

Specs

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°C), 0.5% of span (-40 to 70°C)
Resolution
16 bit D/A converter
Calibration
None Required
Avaliable Field Power
20 mA at 15 V DC supply into 750 Ω load
Field Circuit Protection
24 mA Current Limiting Circuit, Field wiring disconnect
CHARM Power req.
42 mA max @ 24 V DC
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
Update rates are faster than every second dependent on HART communication loading and device type

Features

  • 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
  • No marshalling cabinet or cross-wiring, fewer wires, much less work and fewer contact points for potential failures