GF PORTAFLOW 330, Инструкция по эксплуатации

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Instrction manual Troubleshooting
47
9.4 Test Block
A test block is included with the Portaflow 330 equipment to
allow the transducers and inter-connecting cables to be
functionally checked.
1.
Switch ON the instrument.
2. Select Quick start and enter the parameters shown in the
table below for the appropriate transducer type (A or B):
Parameter A Sensors B Sensors
Pipe outside diameter 30.0mm 50.0mm
Pipe wall thickness 14.0mm 22.0mm
Pipe lining thickness 0.00
Pipe wall material PVDF-SYGEF
Fluid type Water
Mode Diagonal
Temp 20°C
3. When the above data is entered, the SENSOR SEPARATION screen will be displayed.
4. Use the UP/DOWN scroll key to go to the SENSOR SELECTION menu. Select the
appropriate sensor (the default will be “A”) and press the ENTER key to return to the
SENSOR SELECTION menu.
5. Select Sensor mode and position the cursor at Diagonal and press ENTER to return to the
SENSOR SELECTION menu.
6. Select Exit and press the ENTER key to return to the SENSOR SEPARATION screen.
7. Check that the parameters displayed are correct.
8. Apply acoustic couplant to the sensors and attach them to the test block with the
connectors positioned towards the centre of the test block as shown, and temporarily
secure them in place using elastic bands or tape.
9. Connect the sensors to the Portaflow 330 instrument using the cables provided.
10. Press the ENTER key to go to the FLOW READING screen.
11. Select the Options key to go to the FLOW READING OPTION menu and set the Damping to
at least 10 seconds.
12. Select Exit and press ENTER to return to the FLOW READING menu.
13. The flow reading value displayed is not important. The fact that a reading is obtained
indicates that the instrument is functioning. This value may fluctuate but this is normal.
14. The signal strength indicator at the left of the display should show 3–4 bars.
9.5 Microprocessor Reset Facility
In the rare event that the Portaflow 330 instrument appears to totally hang-up, or displays
total gibberish, you can reset its microprocessor by carefully inserting a straightened