Converter Efficiency Compensation; Table 7-9: Calibrationq - Teledyne 9110AH Instruction Manual

TELEDYNE Model 9110AH NO
The offset value gives information about the background signal level. Check the observed
offset value against the factory value in Table 2-1. If significantly higher, check Section 9.1.6.
Increasing readings are a predictor of problems.
Table 7-9: Calibration Quality Check
Step Number
1.
2.
3.
4.

7.10 Converter Efficiency Compensation

The converter efficiency factor compensates NO
component of the NO
efficiency factor of 1.0 disables efficiency compensation, acceptable values are .80 to 1.20.
There are some fault conditions that can be revealed by a NO
faulty switching valve or a partially plugged converter. For the converter to operate properly
there should be at least a few percent oxygen present in the sample stream.
There are 2 ways to enter the NO
Method 1. is covered in Table 7-10.
Analyzer Operator Manual, 01620, Rev. F
X
Action Comment
Scroll the TEST The SLOPE value for NO
function menu not in this range, check Section 9.1.6. If the SLOPE value is in
until the NO
the acceptable range the instrument will perform optimally.
x
SLOPE is
displayed.
Scroll the TEST This number should be near zero. A value of 0.0 50 indicates
function menu
calibration in the optimal range. This number already has the
until the NO AutoZero value subtracted out and is mainly the background
x
OFFSET is
signal due to the molybdenum converter. If the OFFSET value
displayed.
is outside this range, check Section 9.1.6.
Scroll the TEST The SLOPE value for NO should be 1.0 0.3. If the SLOPE
function menu
is in the acceptable range the instrument will perform
until the NO
optimally. If the value is not in this range, check Section 9.1.6.
SLOPE is
displayed.
NOTE:
The NO and NO
Scroll the TEST The instrument will now display the NO OFFSET value. It
function menu should also have a value near zero (0.0
until the NO
already has the AutoZero reading subtracted out and should be
OFFSET is
near zero. If the OFFSET value is outside this range, check
displayed.
Section 9.1.6.
reading is also compensated when instrument is in switching mode. An
x
converter efficiency.
2
7-11
should be 1.0
x
slopes should be equal within
x
readings for converter efficiency. The NO
2
channel linearity check, such as a
2
0.3. If the value is
0.1.
50). This number
2