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S/5 Avance
6.7 Auxiliary O
2
Flow Accuracy Test
6-10
flowmeter tests
1. Open the O
cylinder valve or connect an O
2
2. Rotate the flow control clockwise (decrease) to shut off the flow. The ball should rest
at the bottom of the flow tube and not move.
3. Rotate the flow control counterclockwise (increase). The ball should rise
immediately after rotation is begun. It should rise smoothly and steadily with
continued counterclockwise rotation. When a desired flow is set, the ball should
maintain in a steady position.
4. Rotate the flow control clockwise to shut off the flow.
Note: To check flow accuracy, be sure that the flow test device is capable of measuring
0 to 15 L/min with an accuracy of ±2% of reading.
1. Connect the flowmeter outlet to the flow test device.
2. Adjust the flowmeter so the c c c c e e e e n n n n t t t t e e e e r r r r of the ball aligns with the selected test point
(observe that the ball maintains a steady position for 10 seconds).
3. The test device reading should be between the limits shown for each of the selected
settings in the table below.
Flowmeter Setting
maximum
(valve fully open)
4. Rotate the flow control clockwise to shut off the flow.
5. Close the O
cylinder valve or disconnect the O
2
pipeline.
2
Lower Limit
L/min
L/min
1
0.52
3
2.56
5
4.60
10
9.70
12.00
Flow Tester Reading
Upper Limit
L/min
1.48
3.44
5.40
10.30
-------
pipeline.
2
11/03 1009-0357-000
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Troubleshooting
