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Model 9110TH NOx Analyzer Calibration Procedures
Teledyne Analytical Instruments 215
The following example sets sequence #2 to do a zero-span calibration every other day starting at 1:00
AM on September 4, 2011, lasting 15 minutes, without calibration. This will start ½ hour later each
iteration.
Table 9-4: Example AutoCal Sequence
MODE AND
ATTRIBUTE
VALUE COMMENT
SEQUENCE
2
Define Sequence #2
MODE
ZERO-SPAN
Select Zero and
Span Mode
TIMER ENABLE
ON
Enable the timer
STARTING DATE
Sept. 4, 2011
Start after
Sept 4, 2011
STARTING TIME
1:00 AM
First Span starts at
1:00AM
DELTA DAYS
2
Do Sequence #2
every other day
DELTA TIME
00:30
Do Sequence #2 ½
hr later each day
DURATION
15.0
Operate Span valve
for 15 min
CALIBRATE
OFF
Calibrate at end of
Sequence
IMPORTANT
IMPACT ON READINGS OR DATA
The programmed STARTING_TIME must be a minimum of 5 minutes
later than the real time clock for setting real time clock (See Section
5.6).
Avoid setting two or more sequences at the same time of the day.
Any new sequence that is initiated whether from a timer, the COMM
ports or the contact closure inputs will override any sequence that is
in progress.
The CALIBRATE attribute must always be set to OFF on analyzers with
IZS Options installed and functioning.
Calibrations should ONLY be performed using external sources of
Zero Air and Span Gas whose accuracy is traceable to EPA standards.