Tests
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MID_VD_BA_02_1607
7.2 Manual tests
The result of the manual tests are not stored in the memory of the Veriification Device
and cannot be downloaded from the PC program.
1. Switch off the flow meter and connect the specific wire harness to the amplifier circuit
board.
2. Connect the male D-25 connector of the harness to the corresponding female
connector on the Verification Device.
3. Switch on the flow meter and be sure that the meter is not in the programming mode
when the test starts.
4. Press the “On/Off” button on the Verification Device and wait for the “SelfTest” to
complete.
5. When the Start Menu appears on the display, press the upper left function key.
6. Select the menu “Flow Meter” and press the “OK” button
7.2 Amplifier test
•
Detector current
The current [A] and excitation frequency [Hz] are measured
•
Analog input
Amplification and linearity is measured [div/V]
•
Analog output
Offset and linearity is measured [mA]
•
Inputs/Outputs
The in- and ouput function are tested as well as output frequency [Hz]
•
Empty pipe
7.3 Detector test
•
Coil resistance
Measures the resistance of the coils [Ohm]
•
Electrode impedance
Measures the impedance of the 3 electrodes (measuring and empty pipe) in [Ohm]
•
Isolation
Measures the resistance of the coils against ground [Ohm]
