Emerson Rosemount 3144P, Reference Manual

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16
Reference Manual
00809-0100-4021, Rev JA
Installation
April 2017
Installation
Figure 2-7. Typical Remote Mounted Configuration with Cable Glands
2.5.3 Rosemount X-well
™
installation
Rosemount X-well Technology is for temperature monitoring applications and is not intended for control
or safety applications. It is available in the Rosemount 3144P Temperature Transmitter in a factory
assembled direct mount configuration with a Rosemount 0085 Pipe Clamp Sensor. It cannot be used in a
remote mount configuration. Rosemount X-well Technology will only work as specified with factory
supplied and assembled Rosemount 0085 Pipe Clamp silver tipped single element sensor with an 80 mm
extension length. It will not work as specified if used with other sensors. Installation and use of incorrect
sensor will result in inaccurate process temperature calculations.
It is extremely important that the
above requirements and installation steps below are followed to ensure that Rosemount X-well
Technology works as specified.
In general, pipe clamp sensor installation best practices shall be followed. See Rosemount 0085 Pipe
Clamp Sensor
Quick Start Guide with Rosemount X-well Technology specific requirements noted below:
1. Direct mounting of transmitter on pipe clamp sensor is required for Rosemount X-well Technology to
properly function.
2. Assembly shall be installed away from dynamic external temperature sources such as a boiler or heat
tracing.
3. It is extremely important that pipe clamp sensor tip makes direct contact with pipe surface for
Rosemount X-well Technology. Moisture build-up between sensor and pipe surface, or sensor
hang-up in assembly can cause inaccurate process temperature calculations. Refer to installation best
practices in Rosemount 0085 Pipe Clamp Sensor
Quick Start Guide to ensure proper sensor to pipe
surface contact.
4. Insulation (
1
/
2
-in. thick minimum with a R-value of > 0.42 m² K/W) is required over the sensor clamp
assembly and sensor extension up to transmitter head to prevent heat loss. Apply a minimum of six
inches of insulation on each side of the pipe clamp sensor. Care should be taken to minimize air gaps
between insulation and pipe. See
Figure 2-8 on page 17 .
Note
DO NOT apply insulation over transmitter head as it will result in longer response times and may damage
transmitter electronics.
5. Although it will come factory configured as such, ensure that pipe clamp RTD sensor is assembled in
4-wire configuration.
A. Cable gland
B. 2-in. pipe
C. Shielded cable from sensor to transmitter D. B4 Mounting bracket
E. Shielded cable from transmitter to control room
B
A
C
D
E