Onicon F-3100 Series Manual do Utilizador descarregar pdf (Página 35)

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F-3100 Flow Meter Manual 06/14 - 0670-7 Page 35

4.4 START-UP AND COMMISSIONING WORKSHEET

Please read all installation instructions carefully prior to proceeding with these steps. Use the

following worksheet for checking off the commissioning steps and recording measured values.

STEP TEST/MEASUREMENT S/N: _________ S/N: ________ S/N: ________ S/N: _________

Meter location:

Control system programming:

Match display or Btu meter

serial # (S/N) if ordered:

Signal connections veried:

Supply voltage veried:

Connect power:

The following steps require ow in the pipe. Flow signal readings should be taken while holding

the ow rate constant if possible. Otherwise, take the various output readings as quickly as possible.

10.

Analog or binary outputs

4-20 mA signal: ________ mA ________ mA ________ mA ________ mA

scaled output interval ___________ ___________ ___________ ___________

Calculated ow rate: _______ GPM _______ GPM _______ GPM _______ GPM

Flow rates displayed on

meter display:

_______ GPM _______ GPM _______ GPM _______ GPM

control system:

_______ GPM _______ GPM _______ GPM _______ GPM

4.5 TROUBLESHOOTING GUIDE

NOTE: Also refer to the START-UP AND COMMISSIONING GUIDE located on the preceeding

pages.

REPORTED PROBLEM POSSIBLE SOLUTIONS

No signal • Verify correct wiring to control system (See wiring diagram.)

• Check display for alarm messages. Verify that the pipe is full.

• Verify that the sensor body and transmitter are both connected to earth ground.

Reading is too high or low • Verify correct wiring to control system (see wiring diagram).

• Conrm that the output signals are consistent (frequency vs. analog, etc).

• Conrm that the control system is programmed for correct ow range or scale factor.

Analog signal seems high or

low and does not correspond

to frequency output

Check for ground loop or offset voltage:

• Verify that the sensor body and transmitter are both connected to earth ground.

• Disconnect analog signal input from control system and measure analog outputs directly from

the ow meter.

• Re-connect signal input to control system and measure the analog signals again.

• Any difference between these readings indicates a potential ground loop or offset voltage.

• Please contact ONICON for further assistance.

Control system displays

ow rate, but no ow rate is

indicated on the local

display module or Btu meter

• Verify that all of the wires from the ow meter are connected to the display module or Btu

meter.

• The frequency output wire (green) must be connected for any ONICON display or Btu meter.

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