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DeltaV™ AI 4-20 mA HART CHARM
Brand: DeltaVAn analog input Characterization Module (CHARM) designed for a 4-20 mA, with or without HART, input.
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.
Specifications
Brand
Accuracy Over Temperature Rrange
- 0.1 % of Span (0-60° C), 0.25 % of Span (Over -40 -70° C)
Calibration
- None Required
Charm Heat Dissipation
- 0.33 W
Charm Power Req.
- 36 mA Max. @ 24 Vdc for Two Wire Configuration, 12 mA Max. @ 24 Vdc for Three & Four Wire Configuration
Field Circuit Protection
- 30 mA Current Limiting Circuit, Field Wiring Disconnect
Field Power (2-Wire)
- 15.0 V at 20 mA @ 24 Vdc Input
Full Signal Range
- 0 to 24 mA
HART Data Update Rates
- 500 ms
HART Support
- HART V7 Pass-through for AMS. HART V7 Variable & Device Status Available for Control
Input Impedance
- 250 Ω ± 1 %
Nominal Signal Range (Span)
- 4-20 mA, (0-20 mA Optional)
Repeatability
- 0.05 % of Span
Resolution
- 16-bit A/D Converter
Sensor Types
- 4-20 mA with or without HART, 0-20 mA, Supports 2-Wire & 4-Wire Device Typicals Directly, Supports 3-Wire Device Powered through The, 24 Vdc Power CHARM