Rosemount 248, Справочное руководство

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Reference Manual
00809-0100-4825, Rev BB
August 2005
Rosemount 248
A-4
CE Mark
The Rosemount 248 meets all requirements listed under IEC 61326:
Amendment 1, 1998.
Power Supply Effect
Less than ±0.005% of span per volt
Vibration Effect
The Rosemount 248 is tested to the following specifications with no effect
on performance:
Stability
For RTD and thermocouple inputs the transmitter will have a stability of ±0.1%
of reading or 0.1 °C (whichever is greater) for twelve months
Self Calibration
The analog-to-digital measurement circuitry automatically self-calibrates for
each temperature update by comparing the dynamic measurement
to extremely stable and accurate internal reference elements.
Sensor Connections
Frequency Vibration
10 to 60 Hz 0.21 mm displacement
60 to 2000 Hz 3 g peak acceleration
Rosemount 248 Sensor Connections Diagram
* Rosemount Inc. provides 4-wire sensors for all single element RTDs. You can use these
RTDs in 3-wire configurations by leaving the unneeded leads disconnected and insulated
with electrical tape.
1 2 3 4 2 3 4 1 2 3 4 1 2 3 4
1
2-wire
RTD and
3-wire*
RTD
and
4-wire
RTD
and
T/C
and mV
248-0000B01C