DESCRIPTION
The HART (Highway Addressable Remote Transducer) High Performance (HP) Analog Input module is a standard Ovation I/O Module designed to offer eight galvanically isolated 4-20 mA analog inputs equipped with HART transceivers. Each transceiver facilitates optically isolated communication to a dedicated UART, thus maximizing HART communication efficiency throughout the system.
Specifications:
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Number of channels: 8
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Input range: 2.5 to 25 mA with under-range and over-range checking.
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A/D Resolution: 14 bits
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Reference accuracy (@ 25oC): +/-0.1% of full scale value (20mA) @ 99.7% confidence
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Accuracy over temperature: +/-0.24% of full scale value (20mA) over the full operating temperature range
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Sampling rate (per second):
- 20 when configured for 60 Hz rejection
- 25 when configured for 50 Hz rejection
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Dielectric isolation:
- Channel to channel: 1000 VAC/VDC for one minute
- Channel to logic: 1000 VAC/VDC for one minute
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Operating temperature range: 0o to 60oC (32oF to 140oF)
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Humidity (non-condensing): 0% to 95%
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Module power:
- Drawn from Main: 4.1W typical. 4.5W maximum
- Drawn from Aux.: 3.84W typical (20mA X 8 loops X 24V)
- Dissipation in module: 5.06W typ. (Emod + Pmod)
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Input Impedance: 300 ohms
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Normal Mode Rejection:
- 60 dB @50 Hz ± 1/2% or @60 Hz ± 1/2% (when properly configured)
- 30 dB (typical) @50 Hz ± 5% or @60 Hz ± 5% (when properly configured)
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Common mode rejection:
- 120 dB @ DC or @ the nominal (50/60 Hz) line frequency ± 1/2% and harmonics.
- 100 dB (typical) for nominal line frequency ± 5% and harmonics.
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