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©Titan Enterprises Ltd 2018 www.flowmeters.co.uk MetraflowManual_v1219
meter. As a guide, 10 pipe diameters upstream and 5 pipe diameters downstream are recommended.
If necessary use spacer blocks and mounting clips to raise the pipe work away from surfaces. It is good
practice to use upstream and downstream isolating full bore ball valves to facilitate easy meter
installation or removal.
The Metraflow must be installed in a positive pressure system. Ensure that there is enough back
pressure on the flowmeter to keep any gas in solution. We recommend 500mbar plus two times the
fluid vapour pressure.
The Metraflow can be operated entirely from a computer using the USB connection. This gives local
computer display and an NPN pulse output only. This may not be acceptable in situations where remote
operation or further functions are required. The unit will work with systems from Windows XP onwards.
Connect to the computer with the supplied 1.0m cable or any suitable USB lead. Do not exceed 5
Meters as this may cause data loss. Run the 1 Meter multicore output cable to a suitable terminal box
or instrument. This cable can be lengthened if required, up to 20m.
The cable assignments are displayed below:
+10 to 24VDC (>15V for analog outputs)
