FT
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3500 ELECTROMAGNETIC FLOW METER
ONICON Incorporated 727.447.6140 Page 46 onicon.com
SECTION 5.0: START-UP & COMMISSIONING FOR ONICON
INSERTION ELECTROMAGNETIC FLOW METERS
5.1 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 in-
structions 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 ow meters are individually calibrated for a particular application. Be sure to verify the pipe size and
location.
2. The electronic ow sensing systems will not work in air.
3. When measuring analog output signals, remember that current (mA) must be measured in series, while voltage
is 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 Hz, take your multimeter out of “auto-range mode” and manually set the
range for a voltage level above 15 VDC. This will prevent false readings when signal is not 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 FT-3500 Flow meters are not “loop
powered” devices.
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