VorTek Pro-T, Инструкция по эксплуатации

Страница: 119 / 150

Series M22/M23/M24 Instruction Manual Chapter 5 Troubleshooting & Repair
M-000-00010 5-9
Record values - Hidden Diagnostics Menu continued:
With Flow
With No Flow
(if possible)
Ck =
Lvl =
Adj. Filter =
Iso. Power Volts =
Record the following values from the Calibration Menu.
Meter Size / Pipe ID =
Meter Factor =
Vortex Coef Ck =
Low Flow Cutoff =
Serial Number =
Determine the Fault
Symptom: Output at no Flow
1. The low flow cutoff is set too low. At no flow, go to the first
level of the hidden diagnostics menu and record the Lvl value.
The low flow cutoff must be set above this value.
2. Example: at no flow , Lvl = 25. Set the low flow cutoff in the
Calibration Menu to approximately 28 and the meter will no
longer read a flow rate at no flow.
Symptom: Erratic Output
1. The flow rate may be too low, just at the cutoff of the meter
range, and the flow cycles above and below the cutoff making
an erratic output. Consult the factory if necessary to confirm
the meter range based on current operating conditions. It may
be possible to lower the low flow cutoff to increase the meter
range. See the example above for output at no flow, only this
time the low flow cutoff is set too high. You can lower this
value to increase the meter range as long as you do not create
the output at no flow condition previously described.
2.
Mechanical installation may be incorrect. Verify the straight
run is adequate as described in Chapter 2. For in-line meters,
make sure the meter is not installed backwards and there are no
gaskets protruding into the flow stream. For insertion meters,
verify the insertion depth and flow direction.
3. The meter may be reacting to actual changes in the flow
stream. The output can be smoothed using a time constant.