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Connecting
5.6 Sensor Installation
FUH1010 IP65 NEMA 4X Precision Volume
Operating Instructions, 01/2013, A5E32122003-AA
51
Selecting a location for the sensors
1.
The pipe at the mounting location must remain full, even at zero flow to maintain
operation.
2.
For the purposes of this device any location of straight pipe long enough to physically
mount the sensors is adequate. Unlike ultrasonic flow meters, this interface detector does
not require lengths of straight run to perform as specified.
3.
Avoid, if possible, installing the sensors downstream from a throttling valve, a mixing
tank, the discharge of a positive displacement pump or any other equipment that could
possibly aerate the liquid causing signal aberrations. The best location will be as free as
possible from flow disturbances, vibration, sources of heat, noise, or radiated energy.
4.
Do not mount the sensors on a surface aberration (pipe seam, etc.)
5.
Do not mount sensors from different ultrasonic meters on the same pipe within
reasonable distance. Also, do not run the sensor cables in common bundles with cables
from other instrumentation. Sensor cables originating from a common transmitter can be
in a single conduit.
6.
Always mount sensors on a dry pipe surface. Optional submersible units can be
purchased for installation in wet environments and must be installed in accordance with
factory instructions.
7.
Avoid mounting sensors on the top or bottom of a horizontal pipe. The best placement on
a horizontal pipe is either the three o’clock or nine o’clock position. Mounting on a vertical
pipe is recommended only if flow is in the upward direction. When mounting on a vertical
pipe flowing in a downward direction make sure there is sufficient back pressure in the
system to maintain a full pipe.
Preparing the Pipe
Decide on your mounting mode (Direct or Reflect). Choose Direct Mode if your pipe is
plastic.
①
Pipe
②
Cleaned Areas
Figure 5-7
Pipe Surface Preparation
Содержание SITRANS FUH1010
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Страница 259: ...Glossary FUH1010 IP65 NEMA 4X Precision Volume 198 Operating Instructions 01 2013 A5E32122003 AA ...
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