CAUTIONS FOR INSTALLATION
Turbine flow meters should be installed at the place in compliance with the requirements below:
♦ Easy maintenance ♦ No electromagnetic interface
♦ No vibration ♦ Away from heat source
All turbine flow meters are designed to measure flow in only one direction. The direction
is indicated by the arrow on the body.
Required Lengths of Straight Runs
Flow altering device such as elbows, valves and reducers can affect accuracy. See diagram 1 for
Typical gas turbine flow meter system installation.
Diagram 1. Typical Flow Meter System Installation
The recommended guidelines are given to enhance accuracy and maximize performance of gas turbine flow meter.Distance given here are minimum requirements; double them for desired straight pipe lengths.
• Upstream: allow a minimum straight pipe length at least 10 times the internal diameter of the pipe. For example, with the 50mm pipe, there should be 500mm of straight pipe
immediately upstream. Desired d upstream straight pipe length is 1000mm.
• Downstream: allow a minimum straight pipe length at least 5 times the internal diameter of the pipe. For example, with the 50mm pipe, there should be 250mm of straight pipe
immediately upstream. Desired d upstream straight pipe length is 500mm.
See diagram 2 for straight pipe length requirement when there is altering device.
Diagram 2. Number of Pipe Diameter (D=Diameter)
Warning: Precaution for direct sunshine and rain when the meter is installed outside.