HI LEVEL NO/NOy
Response Check/ Adjustment
Purpose: The HI LEVEL NO/NOy response check/
adjustment is to assure that the HI LEVEL NO/NOy analyzer
has the correct gas calibration. This
can be accomplished by introducing a known quantity of gas to the inlet and
checking the response on the instrument.
The terminology for this type of check is GRC (Gas Replacement
Calibration). Each GRC has a RF
(Response Factor). This RF value should
be 1.000.
Required Equipment: Precision flat head screwdriver
Reference: SOPMAN Pages XX-XX
Analyzer Zero/ Response Check
1.
This procedure
will obtain the initial or current RF value for the HI LEVEL NO/NOy analyzer.
2.
Open the Gas
Calibration Worksheet and enter the correct NO concentration (found on the gas
cylinder) in the blank provided.
3.
On DataView
screen go to the Tools tab and select Trigger Cals.
4.
In the Trigger Cals
menu select HI NO Zero and press Start Calibration.
5.
Under the tools
tab select Query 1-Minute Data.
6.
In the query data
tool menu select the Air MFC, Gas MFC, HI LEVEL NO and HI LEVEL NOy.
7.
Wait 7-10 minutes
or until the data for HI LEVEL NO and HI LEVEL NOy are stable. Press Get Data on the query data tool. If the query data numbers are approximately equal
to the number on DataView then the data is stable and an average can be taken.
8.
Enter the Air
MFC, HI LEVEL NO and HI LEVEL NOy data in the appropriate blank for the HI NO
Zero on the Gas Calibration Worksheet in the As Found section.
9.
Go to Trigger Cals
and push Stop Calibration then select HI NO NO GRC
Point 1 and press Start Calibration.
10.
Wait 7-10 minutes
or until the data for HI LEVEL NO and HI LEVEL NOy are stable then press Get
Data.
11.
Enter the Air
MFC, Gas MFC, HI LEVEL NO and HI LEVEL NOy data in the
appropriate blanks for the HI NO NO GRC Point 1 on
the Gas Calibration Worksheet in the As Found section.
12.
The RF is now
displayed at the far right of the worksheet.
If the RF is between 0.98 and 1.02 and the zero values for HI LEVEL NO
and HI LEVEL NOy are within +/- 0.20 of 0.0, the calibration check is
complete.
13.
Close the Trigger
Cals and Query Data windows.
14.
Save the Gas
calibration worksheet then print the HI LEVEL NO/NOy information and fax it to
15.
If the RF or zero
values are not within spec continue with the Analyzer Response Adjustment
procedure.
Analyzer Zero/ Response Adjustment
1.
This procedure
will be used to adjust the analyzer and obtain a corrected RF and/or zero value
for the HI LEVEL NO/NOy analyzer.
2.
If a Zero
adjustment is made the Response adjustment must also be performed.
3.
If the zero
values are within +/- 0.20 of 0.0 then enter the as
found data for HI NO Zero in the as left section for HI NO Zero and continue
with Analyzer Response Adjustment.
Analyzer Zero/ Baseline Adjustment
1.
If the zero
values are out of tolerance then go to DataView to the Tools tab and select
Trigger Cals.
2.
In the Trigger Cals
menu select HI NO Zero and press Start Calibration.
3.
Under the tools
tab select Query 1-Minute Data.
4.
In the query data
tool menu select the Air MFC, HI LEVEL NO and HI LEVEL NOy.
5.
Wait 7-10 minutes
or until the data for HI LEVEL NO and HI LEVEL NOy are stable.
6.
On the C or CTL
model analyzers push Menu and scroll to Calibration and press Enter. At this location there should be an option
for Calibrate Zero, Calibrate NO Background or Calibrate NOx Background. If there isn’t contact
7.
If the screen has
Calibrate Zero, move the cursor to it and press Enter. Then press Enter again and the screen will
flash “Saving Parameter”. Push run when finished.
8.
If the screen has
Calibrate NO Background, move the cursor to it and press Enter. Then press Enter again and the screen will
flash “Saving Parameter”. Push Menu and
move the cursor to Calibrate NOx Background and press Enter. Then press Enter again and the screen will
flash “Saving Parameter”. Push run when finished.
9.
Each channel has
been zero adjusted.
10.
Wait 2 minutes
and Press Get Data on the query data tool.
11.
Enter the last average
for Air MFC, HI LEVEL NO and HI LEVEL NOy data in the appropriate blank for the
HI NO Zero on the Gas Calibration Worksheet in the As Left section.
Analyzer Response Adjustment
1.
On DataView go to
the Tools tab and select Trigger Cals.
2.
Press Stop Calibration,
then select HI NO NO GRC Point 1 and press Start
Calibration.
3.
Under the tools
tab select Query 1-Minute Data.
4.
In the query data
tool menu select the Air MFC, Gas MFC, HI LEVEL NO and HI LEVEL NOy.
5.
Wait 7-10 minutes
or until the data for HI LEVEL NO and HI LEVEL NOy are stable. If the query data numbers are approximately equal
to the number on DataView then the data is stable and an average can be taken.
6.
Adjust the
instrument to the Actual Expected value from the As Left section of the
worksheet. If the RF from the As Found
section is less than 0.90 or more than 1.10 a PMT adjustment will need to be
made before the final cal sequence. If
the RF is within 0.90 and 1.10 then go to the Final Cal Sequence section.
PMT Adjustment
a.
Before adjusting
the PMT set the Cal Coefficients to 1.000.
b.
On the C or CTL
model analyzers push Menu and scroll to Calibration Factors and press
Enter. At this location, the parameters
should be set as follows: NO COEF
=1.000, NOx COEF =1.000 & NO2 COEF =1.000.
To change the COEF use the up and down arrows to move the cursor to the
COEF that needs to be changed and press Enter.
Then use the up and down arrows to change the COEF to 1.000 and press
Enter. The screen will flash “Saving
Parameters”. Push run when finished.
c.
The PMT can be
adjusted by taking the top off of the analyzer. With the top of the analyzer off look on the
right side of the bulkhead at the front.
There is a blue box with an orange grommet on the top. Inside the grommet is the PMT adjustment
screw. Some CTL model analyzers have
been modified so that the PMT can be adjusted through the front panel. Adjust the analyzer until the NO channel on
the analyzer or NO on DataView is approximately equal to the Actual Expected
value from the As Left section of the worksheet.
Final
a.
On the C or CTL
model analyzers push Menu and scroll to Calibration and press Enter. At this location there is an option for
Calibrate NO and Calibrate NOx. If there
isn’t contact
b.
Scroll to
Calibrate NO and press Enter.
c.
Change the SET NO
TO value to the Actual Expected value from the As Left section of the
worksheet.
d.
DO NOT PRESS
ENTER until the expected value has been entered into the analyzer. Using the left and right arrows move the
cursor to the first digit to be changed.
Now use the up and down arrows to change that number to the first number
of the expected value. Then use the left
and right arrow to move the cursor and change the next number. Continue this process until the SET NO TO
value has been changed to the expected value from the calibration worksheet.
e.
Then press Enter
and the screen will flash “Saving Parameter”.
The first channel of the analyzer has been calibrated.
f.
Press Menu and
scroll down to Calibrate NOx and press Enter.
g.
Now follow Step
C, D and E to calibrate the second channel of the analyzer.
h.
Push run when finished.
i.
The response
adjustment is now complete.
7.
When the analyzer
adjustments are complete, let the analyzer stabilize for 2-5 minutes.
8.
On the Query
1-Minute Data tool push Get Data.
9.
Enter the HI
LEVEL NO and HI LEVEL NOy data in the appropriate blank for the HI NO NO GRC Point 1 on the Gas Calibration Worksheet in the As
Left section.
10.
The RF is now
displayed at the far right of the worksheet.
If the RF is between 0.98 and 1.02, the calibration adjustment is
complete. If the RF is not within spec,
repeat the adjustment part of the procedure again.
11.
When the
instrument is finished being tested make sure to put it back into the run mode.
12.
Close the Trigger
Cals and Query Data windows.
13.
Save the Gas
Calibration worksheet, and then print the HI LEVEL NO/NOy information and fax
it to