Calibration Procedures Model 100E Instruction Manual
140 045150102 Rev XB1
WARNING!
The CALIBRATE attribute must always be set to OFF for analyzers used in US
EPA controlled applications that have IZS option installed.
Calibration of instruments used in US EPA related applications should only be
performed using external sources of zero air and span gas with an accuracy
traceable to EPA or NIST standards and supplied through the analyzer’s sample
port (Section 7.2).
The following example sets Sequence2 to carry out a zero-span calibration every other
day starting at 01:00 on September 4, 2002, lasting 15 minutes. This sequence will start
0.5 hours later each day.
Table 7-4: Example Auto-Cal 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, 2002 Start after Sept 4, 2002
Starting Time 01:00 First Span starts at 01:00
Delta Days 2 Do Sequence #2 every other day
Delta Time 00:30 Do Sequence #2 0.5 h later each day
Duration 15.0 Operate Span valve for 15 min
Calibrate ON The instrument will re-set the slope and offset values for the SO
2
channel at the end of the AutoCal sequence
Programming NOTES
The programmed Starting Time must be 5 minutes later than the real time
clock.
Avoid setting two or more sequences at the same time of the day. Any new
sequence which is initiated from a timer, the COM ports, or the contact
closures will override any sequence in progress. Note that two sequences with
different daily increments may eventually overlap.
If at any time an illegal entry is selected, (for example: Delta Days > 366) the
ENTR key will disappear from the display.
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