44
Reference Manual
00809-0200-4728, Rev SA
Installation
July 2018
Installation
Example
The maximum permissible housing temperature rise (T) can be calculated by subtracting the maximum
ambient temperature (A) from the transmitter’s ambient temperature specification limit (S). For
instance, if A = 40 °C.
T = S - A
T = 85 °C – 40 °C
T = 45 °C
For a process temperature of 540 °C (1004 °F), an extension length of 3.6-in. (91.4 mm) yields a housing
temperature rise (R) of 22 °C (72 °F), providing a safety margin of 23 °C (73 °F). A 6.0-in. (152.4 mm)
extension length (R = 10 °C [50 °F]) offers a higher safety margin (35 °C [95 °F]) and reduces
temperature-effect errors but would probably require extra transmitter support. Gauge the
requirements for individual applications along this scale. If a thermowell with lagging is used, the
extension length may be reduced by the length of the lagging.
3.4 Installation procedures
Figure 3-2. Installation Flowchart
START
HERE
Bench
Calibration?
BASIC SETUP
Set Sensor Type
Set Number of Wires
Set Units
Set Range Values
Set Damping
VERIFY
Simulate Sensor Input
Within
Specifications?
FIELD INSTALL
Set Failure Mode Switch
Mount Transmitter
Wire Transmitter
Power Transmitter
FINISHED
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