© 2019 VPInstruments | MAN-VP-SPRO-EN | Revision: 1901 | Date: 04-07-2019
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Mechanical installation
Put together the VPFlowScope probe
Connect the display or connector cap on the VPFlowScope probe sensor module. Make sure that it
slides completely over the O-ring seal. Position the O-ring in the upper position for the connector
cap. Use the lower position for the display. Apply some O-ring grease if required. Gently fix the
screw on top.
Install the VPFlowScope probe in the pipe
First select the right installation point. The installation point is crucial for the right measurements.
Sources of error can be: installation effects, unknown flow profiles, swirls, pressure and temperature
effects, humidity effects, oscillations in the flow. To ensure the highest possible accuracy of flow
measurement, the installation and piping instructions must be followed carefully. Therefore read this
paragraph carefully.
Take into account:
·
Choose a site which is accessible, which allows ease of wiring and maintenance, and which allows
you to still read and access the display when needed.
·
Meet the specifications of the VPFlowScope probe. When the specifications are not met, for
instance the pressure or temperature level is too high; this will cause inaccurate flow measurement
and can even damage your flow meter.
·
Do not apply mechanical stress to the flow meter.
Avoid:
·
Excessive heat, check the temperature range of your VPFlowScope probe.
·
Potential water damage on the outside. Avoid areas of high humidity and avoid dripping. Be aware
that the VPFlowScope probe is not watertight, it is only splash proof.
·
Corrosive atmosphere where possible.
·
Electrical problems (high voltage/ high power).
·
Mechanical vibration and danger (walking bridges, fork lift trucks).
Stop: These devices are only for use with Air, Nitrogen and other non hazardous and
non combustible gases. The maximum working pressure is 16 bar (250 psi)
Arrêt: Ces dispositifs sont uniquement destinés à être utilisés avec de l'air, de l'azote et
d'autres gaz non dangereux et non combustibles. La pression opérationnelle maximale
est de 16 bar (250 psi)
Prepare the installation
The VPFlowScope probe can be inserted through a welding tap with internal 1/2 inch thread or
through a hot tap saddle. A hot tap saddle can be installed under pressurized conditions, so there is
no need to shut down production.
Use a ball valve to insert and retract the VPFlowScope probe when you want. Use a 1/2 inch full bore
ball valve or a 3/4 inch ball valve. The VPInstruments hot tap drill has a 1” drill size. In that case,
place a 1” ball valve and use, after drilling, a reducer to go back to 1/2” for the compression fitting.
Warning: Make sure that the hole is at least 16 mm | 0.63 inch inner diameter, and
completely clear for insertion. A too small hole will damage the probe or your
measurement value will be very low.