D-583-2N-E
6
LIQUID TEMP. (°C)
− 10 0
50
100
150
200
250
300
− 20
0
20
40
60
125
AMBIEN
T
TEMP
. (°C)
Operating
Range
Fig. 6.8
Fig. 6.7
Fig. 6.9 Ambient Temperature Range
6.4.3 Preamplifier Orientation
As viewed from the direction of flow (upstream side),
the preamplifier typically installed inclined to the left.
The mode select switch points downward.
6.5 Lagging Work
If heat insulation is considered for the piping,
simplified lagging (without mortar finish) is suggested
for the area where the meter is installed to facilitate
disassembly and inspection. Such consideration
will simplify meter connecting bolt removal without
the need of breaking the coat of lagging material at
servicing.
6.6 Ambient Temperature
Given in Fig. 6.9 is the allowable process fluid
temperature relative to the ambient temperature.
Ensure that the ambient temperature is held within
the rating (25
℃
).
If there is a possibility that the ambient temperature
exceeds the allowable limit, the following measures
should be taken into consideration.
- Avoid exposure to the direct rays of the sun.
- Separate from the piping and equipment of
elevated temperatures or provide a heat shield.
- Thermally insulate the preamplifier (in a low
temperature environment).
6.7 Partially Filled Pipe
When making measurement of a liquid, make sure the piping remains full of fluid and contains no trapped air or
gases. In applications where the existing piping conditions potentially cause a partially filled pipeline, a purge
valve should be provided.
6.8 Working Stage and Hoist (in case of the hottap type)
To facilitate inspection and maintenance
Hottap Type DELTA Flowmeter, we recommend that a working stage
and a hoisting device are provided.
PREAMP FITTING
SCREW
ADAPTER
FLANGE
CONNECTING BOLT
PIPELINE
LAGGING
SIMPLE LAGGING WORK
(SPRIT-DESIGN DESIRABLE FOR
EASE OF MAINTENANCE)
LABBING WORK
PREAMPLIFIER
MODE SELECT
SWITCH
TO PROBE
DISPLAY
PREAMPLIFIER
Summary of Contents for EX DELTA II
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