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Rosemount
Rosemount 848T High Density Temperature Transmitter
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Parámetros clave
Ambient temperature
−40 to +85 °C (−40 to +185 °F)
Inputs Ff
Eight independently configurable channels: 2-/3-wire RTD, thermocouple, mV, 2-/3-wire ohm; optional 4–20 mA
Protocol
FOUNDATION Fieldbus (IEC 61158) and WirelessHART variants
Accuracy Rtd Reference
±0.30 °C (±0.54 °F) Pt100 at 20 °C reference (FF)
Stability
±0.1% of reading or 0.1 °C (whichever greater) for 2 years RTDs / 1 year thermocouples
Update Time
Approximately 1.5 s to read all eight inputs (FF)
| Parámetro | Valor |
|---|---|
| Ambient temperature | −40 to +85 °C (−40 to +185 °F) |
| Inputs Ff | Eight independently configurable channels: 2-/3-wire RTD, thermocouple, mV, 2-/3-wire ohm; optional 4–20 mA |
| Protocol | FOUNDATION Fieldbus (IEC 61158) and WirelessHART variants |
| Accuracy Rtd Reference | ±0.30 °C (±0.54 °F) Pt100 at 20 °C reference (FF) |
| Stability | ±0.1% of reading or 0.1 °C (whichever greater) for 2 years RTDs / 1 year thermocouples |
| Update Time | Approximately 1.5 s to read all eight inputs (FF) |
| Supply Voltage Ff | 9.0 to 32.0 VDC over FOUNDATION Fieldbus; 22 mA max |
| Humidity | 0–99% RH non-condensing |
| Isolation | 600 VDC channel-to-channel (ref conditions); 10 VDC all operating conditions with ≤500 ft sensor leads |
| Emc | EN 61326 and NAMUR NE-21 industrial environment; max deviation <1% span during disturbance |
| Diagnostics | Measurement validation diagnostic for sensor degradation, wiring, vibration, abnormal process |
| Function Blocks Ff | AI, MAI, ISEL; Backup Link Active Scheduler |
| Enclosure | Options for mounting close to process including hazardous areas / intrinsically safe design |
| Turn On Time | <30 s to within specifications after power applied |