5
FP-4135 On-Board Volumetric Flow Detector
Precautions on piping
CAUTION
Do not confuse the IN and OUT parts of the detector.
•
The detector has an inlet (IN) and an outlet (OUT) for the liquid. Recheck the inlet and the outlet when piping.
Recommendations on bypass valve installation
•
Installing a bypass valve in piping is recommended to maintain the measured system such as an engine,
release air pockets out of the piping, or to repair detector malfunctions.
Pay attention to how to wind the seal material.
Follow the instructions below to wind a Teflon seal tape on the screws to change the couplings.
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The seal tape should be wound around 2 to 2.5 times on a screw with the last 1 to 2 threads of a screw not
tightened.
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When using a liquid seal material, be careful not to leak the liquid material into the piping.
Leave space for about 2 threads.
Winding
direction
Seal tape
Do not bend piping into the shape of an arch.
•
If pipings are bent into an arc shape, air pockets can be form in the top part and become hard to remove.
•
If the piping has any air pockets, measurement will be incorrect. Take care.
Air pocket
Piping
Piping
Fix the piping in front and to the rear of the detector.
•
Use the appropriate fixtures on the piping in front and to the rear of the detector to prevent leakage and
damage to the connection part of the detector by vibrations.
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Precautions on Electromagnetic Environment
CAUTION
• This product is intended the equipment to be used in industrial electromagnetic environment.
• Using this product in a household may cause electromagnetic interference. In such a case, us-
ers may be required to take appropriate actions.