ONICON F-5100 Inline - Manual (Page 20)

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F-5100 Inline Thermal Mass Flow Meter Manual 05/15 - 0686-11 / 18332 Page 20
4.4 START-UP & COMMISSIONING
Please read the entire procedure before proceeding. A worksheet for checking off the following
steps and recording measured values is located on the next page.
1. Confirm flow meter location.
Confirm adequate straight pipe run
to achieve desired results.
Is the meter located in the correct location as required by the plans?
Compare actual straight pipe upstream and downstream of the me-
ter location to recommended distances identified in this manual.
2. Confirm orientation. Refer to the information in section 3.1 of this manual to ensure
that the meter is properly oriented with respect to the direction of
flow.
3. Confirm control system
programming. Confirm that the control system input point is properly configured
for the analog range and/or scale factor identified on the calibration
tag
& certificate.
4. Confirm connection to
correct ONICON display Confirm that the flow meter serial number matches the ONICON
display (when ordered together).
5. Verify wiring before connecting
power. Prior to connecting the power, verify that the wiring is correct as
shown in this manual and/or on additional wiring diagrams pro-
vided with the ONICON display. If in doubt, contact ONICON for
assistance before proceeding further.
6. Confirm correct supply voltage. Verify that the supply voltage matches the voltage listed on the
meter tag.
7. Connect power. Wait approximately 45 seconds after power-on before proceeding
further.
The following steps require flow in the pipe. Flow signal readings should be taken while
holding the flow rate constant, if possible. Otherwise, take the various output readings as
quickly as possible.
8. Measure and record analog and
pulse outputs.
Current Output:
Scaled Output:
Refer to flow meter wiring diagram to locate the correct output
terminals. Use the following formula to calculate the flow rate from
the analog signal measurement:
SCFM = (measured current in mA - 4) X Full Scale Flow Rate
16
Each 24VDC pulse = unit volume identified as “Scale Factor” (mea-
sure and record time interval between pulses)
9. Compare output signals to each
other and to the flow rate displayed
by the control system. Compare the flow rate calculated in step 8 to the flow rate indicated
by the control system. Confirm that the control system is registering
scaled output pulses as they occur.
Refer to troubleshooting guide when readings are inconsistent.