Omega FPD-4000 Series, Руководство пользователя

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8
Installing a Bypass
If possible, install a bypass around the flow meter, and flush existing piping with
the appropriate liquid before first use. See Figure 1.
Pickup Sensor Installation
Before attaching the sensor to the flow meter, check for any potential clearance
issues. It may be easier to install the sensor after the flow meter has been
installed in the line.
CAUTION: Do not use a wrench or Channellock®* to aid in hand installing the
pickup sensor.
CAUTION: Whether the sensor requires a tool to install or is hand installed,
tighten to hand-tighten torque only. Over tightening may cause damage to the
sensor and as a result it may not function properly.
Pickup Sensor Location
Locate the pickup and wiring away from A/C motors, actuators, heaters, relays,
etc. Use only shielded cable and if possible, a dedicated power supply for the
electronics. If sharing power with other devices in the system, be aware that
power-draw spikes from other equipment could cause a surge into the sensor,
which in turn can cause sensor to give erroneous pulses. Ensure clean power
supplies that utilize a true earth ground. Install Intrinsic Safety Barriers if the
circuit is intended to be intrinsically safe.
Figure 3: Flow meter with pickup sensor installed
*Channellock® is a registered trademark of Channellock, Inc.