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TELEDYNE INSTRUMENTS
Calibration 460L Instruction Manual
42 05228 Rev B
PRINTED DOCUMENTS ARE UNCONTROLLED DCN 5164
Where
<address> is the network address of the M460M being calibrated.
929 is a special password allowing you to calibrate the analyzer.
5. List the current values of the M460M’s VARS. Type:
<address>VLIST<CR>
Look through the list for one with the a special VARS named either O3 SLOPE, or O3
SPAN SLOPE. This VAR is only available using the 929 password.
Record both the slope value and the VAR Number it corresponds with.
6. Make sure your ozone standard and analyzer are both reading the same span gas or ozone
concentration.
7. Calculate the slope using the following equations:
Equation 8-1
(O3 concentration on analyzer) ÷ (O3 Slope) = (True O3 value of analyzer
)
Equation 8-2
(O3 concentration on standard) ÷ (True O3 value of analyzer
) = (New slope)
EXAMPLE
Where:
Slope of analyzer = 1.013
Current O3 reading of analyzer = 8.70%
Current O3 reading of standard = 9.00%
a) (O3 concentration on analyzer) ÷ (O3 Slope) = (True O3 value of analyzer
8.70% ÷ 1.013 = 8.59%
b) (O3 concentration on standard) ÷ (True O3 value of analyzer
) = (New slope)
9.00% ÷ 8.59%
= 1.048
1.048 would be the New Slope Value that needs to be entered in the next step.