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Daniel 3812 Liquid Ultrasonic Flow Meter Installation Manual Section 2: Mechanical installation
3-9000-765 Rev D March 2013
Mounting requirements in heated or cooled pipelines 43
2.4 Mounting requirements in heated or cooled
pipelines
The ambient operating temperature of the 3812 Liquid Allocation electronics (i.e. Flameproof
enclosure and Intrinsically safe base enclosure) is -40
o
C to +60
o
C
(-40
o
F to +140
o
F).
If the meter is installed into a pipeline which is heated or cooled outside this temperature range
it
is necessary to remove the Transmitter Electronics enclosure from the meter body (i.e. Spool
piece acting as process fluid conduit) and mount it next to the meter body on a pipe stand or
other rigid structure. The process temperature must also not exceed the operating temperature
range of the transducers. LT-10 and LT-11 operating temperature range -50
o
C to 135
o
C
(-58
o
F to +275
o
F) with NBR o-rings and operating temperature range -40
o
C to +150
o
C
(-40
o
F to +302
o
F with FKM o-rings).
SURFACE TEMPERATURE HAZARD.
The meter body and piping may be extremely hot or cold.
Wear appropriate personal protective equipment when coming in contact with the meter.
Failure to do so may result in injury.