Table 7-4: Example Auto-Cal Sequence - Teledyne 200E Instruction Manual

Model 200E Instruction Manual
The CALIBRATE attribute (formerly called "dynamic calibration") must always be
set to OFF for analyzers used in US EPA controlled applications that have IZS
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
The following example sets sequence #2 to carry out a zero-span calibration every other
day starting at 14:00 on 01 January, 2003, lasting 30 minutes (15 for zero and 15 for
span). This sequence will start 30 minutes later each day.
Mode and Attribute
Sequence
Mode
Timer Enable
Starting Date
Starting Time
Delta Days
Delta Time
Duration
Calibrate
Please note the following suggestions for programming the AutoCal feature.
• The programmed Starting Time must be 5 minutes later than the real time clock
(Section 6.4.3).
• 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.
• With CALIBRATE turned on, the state of the internal setup variables
DYN_SPAN and DYN_ZERO is set to ON and the instrument will reset the slope
and offset values for the NO and NO
This continuous re-adjustment of calibration parameters can often mask subtle fault
conditions in the analyzer. It is recommended that, if CALIBRATE is enabled, the
analyzer's test functions, slope and offset values be checked frequently to assure
high quality and accurate data from the instrument.
044100102 Rev A
NOTE
option installed.
sample port (Section 7.2).
Table 7-4: Example Auto-Cal Sequence
Value
2 Define sequence #2
ZERO-SPAN Select zero and span mode
ON Enable the timer
01-JAN-03 Start on or after 01 January 2003
14:00 First sequence starts at 14:00 (24-hour clock format)
2 Repeat this sequence every 2 days
Repeat sequence 30 minutes later each time
00:30
(every 2 days and 30 minutes)
Each sequence step will last 15 minutes (total of 30
15.0
minutes when using zero-span mode)
The instrument will recalculate the slope and offset values
ON for the NO and NOX channel at the end of the AutoCal
sequence.
X
Calibration Procedures
Comment
response each time the AutoCal program runs.
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