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NGA 2000 CLD
Instruction Manual
HAS60E-IM-HW
June 2007
3 - 6 Operation Emerson Process Management GmbH & Co.OHG
b. Flow Balance Adjustment:
To adjust the Flow Balance Valve, select:
Main (Menu)...
Analyzer basic controls (calibration) & setup...
Figure 3-8: Basic Controls Menu
To adjust the flow balance, select the measuring range
that is really in use and do a Zero- / Span adjust in NO
mode.
Zero Adjustment
In the Basic Controls menu, push the F3 softkey and
enter the Analyzer Zero menu.
Figure 3-9: Analyzer Zero Menu
Push the F3 softkey again, to start the zeroing process.
Be sure to have zero gas flowing through your analyzer
and to have it purged it from sample gas before.
When the zeroing process is finished, "Calibration sta-
tus" will turn to "READY".
Span Adjustment
After that, do a Span adjust in the same measuring range.
For that, push the F4 softkey in the Basic Controls menu,
so that the Analyzer Span menu turns up:
Figure 3-10: Analyzer Span Menu
Push the softkey F4 again to start the spanning sequence.
Be sure to have span gas flowing through your analyzer
and to have it purged before.
When the spanning sequence is finished, the "Calibra-
tion status" will turn to "READY".
When having completed the zero- and span adjust in
NO mode, switch over to NOx mode by pressing the F2
softkey in the Basic Controls menu. Observe the mea-
suring value after switching into NOx mode:
• If the measuring value stays constant (maybe af-
ter a short peak immediately after switching into
NOx mode), your flow balance is perfectly adjusted
and your analyzer is ready for measurement.
• If the measuring value changes after switching to
NOx mode, turn the flow balance valve carefully
until the difference between measuring values in
NO mode and NOx mode is minimized.
To make sure that your analyzer is correctly calibrated,
switch back to NO mode, if necessary, repeat zero- and
span adjustment and check for an existing difference
between measurement in NO mode and in NOx mode.
Line#1
HOME ESCAPE INFO
0.000 ppm
ZERO
Analyzer Zero
Are you sure ?
You must have zero gas flowing through the analyzer.
Calibration time:
Measurement range number:
Zero ranges:
Calibration status:
Error message for last zero:
24 s
1
SEPARATELY
READY
CAL OK
.
Line#1
HOME NO/NOx INFO
0.000 ppm
1
24.9 ppm
Disabled
1&2
READY
10.0 ppm
NORMAL
NOx mode
OFF -PRES. SW.
Enabled
Pressure limits...
ZERO SPAN
Basic Controls
Measurement range number:
Range upper limit:
Automatic range change control:
Ranges with valid calibration:
Calibration status:
Span gas concentration:
Status:
Measurement Mode:
Ozonator status:
Ozonator power:
Line#1
HOME NO/NOx INFO
0.000 ppm
SPAN
Analyzer Span
Are you sure ?
You must have span gas flowing through the analyzer.
Calibration time:
Measurement range number:
Span ranges:
Calibration status:
Error message for last span:
24 s
1
SEPARATELY
READY
CAL OK