27
Rosemount 848T Family
November 2014
www.rosemount.com
Specifications
Functional specifications
Input
Four independently configurable input channels that supports
Thermocouple, RTD, mV, 0-10 V, ohm, and 4–20 mA, input
types. See “Accuracy” on page 29 for sensor options.
Output
IEC 62591 (WirelessHART), 2.4 GHz DSSS.
Ambient temperature limits
–40 to 85 °C (–40 to 185 °F)
Humidity limits
0–99% non-condensing relative humidity
Update rate
User selectable, 4 sec to 60 min.
Accuracy
(Pt 100 @ reference condition: 20 °C)
±0.30 °C (±0.54 °F) For the complete list see “Accuracy” on page
29
.
Isolation
Isolation between all sensor channels is rated to 10 Vdc over all
operating conditions. No damage will occur to the device with
up to 250 Vdc between any sensor channels.
Alerts
Message sent when open or short sensor is detected.
Electromagnetic Compatibility (EMC)
Meets the criteria under European Union Directive
2004/108/EC
Meets all relevant requirements of EN 61326.
Transmitter stability
±0.15% of reading or 0.15 °C (0.27 °F), whichever is greater,
for 2 years for RTDs.
±0.15% of reading or 0.15 °C (0.27 °F), whichever is greater,
for 1 year for thermocouples.
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.
Vibration effect
Tested to the following with no effect on performance per IEC
60770-1, 1999.
Physical specifications
Material selection
Emerson provides a variety of Rosemount product with various
product options and configurations including materials of
construction that can be expected to perform well in a wide
range of applications. The Rosemount product information
presented is intended as a guide for the purchaser to make an
appropriate selection for the application. It is the purchaser’s
sole responsibility to make a careful analysis of all process
parameters (such as all chemical components, temperature,
pressure, flow rate, abrasives, contaminants, etc.), when
specifying product, materials, options and components for the
particular application. Emerson Process Management is not in a
position to evaluate or guarantee the compatibility of the
process fluid or other process parameters with the product,
options, configuration or materials of construction selected.
Conformance to specifications (±3σ [Sigma])
Technology leadership, advanced manufacturing techniques,
and statistical process control ensure specification conformance
to at least ±3
σ.
Frequency acceleration
10-60 Hz 0.21 mm peak displacement
60-2000 Hz 3 g
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commenti su questo manuale