24
CI/AZ40-EN Rev. A
6. Set the zero gas regulator to a low value, for example, 8 psig.
Press the
key (below the
Select
prompt).
The
Flow Rate Test
screen is displayed and a prompt
Press Next To Apply Zero Gas
is displayed:
7. Press the
key (below the
Next
prompt).
A screen (similar to the following example) is displayed:
Increase the zero gas flow rate by approximately 0.25 SCFH
(0.15 l/min). Allow 15 seconds for the mV reading to stabilize.
Record the flow rate and mV reading.
Repeat until no further change in mV reading occurs with
increase in flow rate. Record the flow rate at which the mV
reading first reached its stable value.
8. Press the
key (below the
Next
prompt). The following
screen is displayed:
The zero gas flow rate should be adjusted to the flow rate for
stable mV value (noted above) plus a further 0.5 SCFH
(0.25 l/min).
9. Press the
key (below the
Next
prompt). The following
screen is displayed:
Adjust the span gas flow to match the same flow rate
set for the zero gas.
10.Press the
key (below the
Next
prompt).
The
Sample Flow Recovery
status message is displayed:
Wait until the progress bar indicates completion.
Next
Flow Rate Test
O2 >5%. Press Next
To Apply Zero Gas
Next
Flow Rate Test
Increase Zero Flow
–6.7 mV
Next
Flow Rate Test
Increase Zero Flow
Another 0.5 SCFH
Next
Flow Rate Test
Adjust Span Gas Flow
To Match Zero Gas
Next
Flow Rate Test
Sample Flow Recovery
