Physical Installation - Emerson Rosemount 848T Reference Manual

Installation
September 2019
Table 3-3: 4–20 mA (NAMUR) Saturation and Alarm
Transmitter status
Sensor Saturation
Sensor Out of Limits
Good
Sensor Out of Limits
Sensor Saturation
Because of resistor variances, the input must be calibrated with the resistor installed to
meet the
procedures, see Calibration.
3.4

Physical installation

3.4.1 Remote mount
The Rosemount 848T is only intended to be installed in the Remote Mount configuration
where the sensor is mounted separate from the Rosemount 848T housing, then
connected to the transmitter using conduit or cable glands.
Procedure
1. Install the sensor according to standard installation practices. Be sure to use
2. To reduce sensor wiring length, mount the Rosemount 848T Wireless transmitter
3. Run wiring (and conduit, if necessary) from the sensor to the Rosemount 848T. For
32
Analog input (mA)
> 20.96
20.5–20.96
3.8–20.5
3.64–3.8
< 3.64
Accuracy specifications. For more information on lower and upper trim
approved thread sealant on all connections.
central to all of the measurements. When installing the Rosemount 848T wireless,
the conduit entries need to be facing downward. If using the mounting bracket
(Option Code B6), mount to a 2-in. pipe.
an easier installation, use the outside conduit entries, as shown below. Any unused
conduit entries should be sealed with an approved sealant using the included
threaded conduit plug.
Measured voltage (mV)
> 104.8
102.5–104.8
19–102.5
18.2–19
< 18.2
Emerson.com/Rosemount
Reference Manual
00809-0100-4848
Analog region
Upper Alarm
Upper Saturation
Normal Region
Lower Saturation
Lower Alarm