Owner’s Manual for ONICON Insertion Turbine Flow Meters • September 27, 2001
15
SECTION 4.0: STARTUP & COMMISSIONING FOR ONICON
INSERTION TURBINE FLOW METERS
4.1 HELPFUL HINTS FOR START-UP AND COMMISSIONING
A step-by step procedure and companion worksheet are located on the next two pages. Please
read all installation instructions carefully before proceeding with installation, start-up and
commissioning.
Please read these helpful hints before proceeding with the start-up and commissioning
procedure on the next page.
1. ONICON Flow Meters are individually calibrated for a particular application. Be sure
to verify the pipe size and location.
2. The electronic sensing systems will not work in air. Blowing on the turbine(s) will
not produce a signal. You can test the meter by holding the turbines under a faucet or
carefully moving it back and forth in a bucket of water.
3. When measuring analog output signals, remember that currents (mA) must be
measured in series, while voltages are measured in parallel. If the 4-20 mA signal is
already connected to a control system, you must break the connection and measure
the signal in series.
4. When measuring frequency outputs in hertz, take your multimeter out of “autorange
mode” and manually set range for a voltage level above 15 VDC. This will prevent
false readings when no turbine signal is present.
5. All wiring connections should be made at the end of the factory cable. Do not attempt
to remove the factory installed cable or change the orientation of the electronics
enclosure.
6. Never connect power to analog or frequency output signal wires. ONICON flow
meters are not “loop powered” devices.
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