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Communications Setup and Operation Teledyne API T801 NDIR CO2 Analyzer Operation Manual
124
6.5.2.5. GAS LIST ENTRY FORMAT AND DEFINITIONS
The T801 analyzer keeps a list of available gas types. Each entry in this list is of
the following format.
[GAS TYPE],[RANGE],[GAS ID],[REPORTED]
WHERE:
GAS TYPE = The type of gas being reported (e.g., CO
2
).
RANGE = The concentration range for this entry in the gas list. This feature
permits the user to select which concentration range will be used
for this gas list entry. The T801 analyzer has two ranges:
RANGE1 or LOW and RANGE2 or HIGH (See Section 5.4.1).
0 -
The HESSEN protocol to us
e whatever range is currently
active.
1 - The HESSEN protocol will always use RANGE1 for this gas list
entry
2 - The HESSEN protocol will always use RANGE2 for this gas list
entry
3 - Not applicable to the T801 analyzer.
GAS ID = An identification number assigned to a specific gas. In the case of
the T801 analyzer, there is only one gas, CO
2,
and its default GAS
ID is 111. This ID number should not be modified
.
REPORT = States whether this list entry is to be reported or not reported when
ever this gas type or instrument is polled by the HESSEN network.
If the list entry is not to be reported this field will be blank.
The T801 analyzer measures CO
2,
; thus, the gas list entry would
be:
CO2, 0, 111, REPORTED
These default settings cause the instrument to report the concentration value of
the currently active range. If you wish to have just concentration value stored for
a specific range, this list entry should be edited or additional entries should be
added (see Section 6.5.2.5).
EXAMPLE:
Changing the above CO
2
gas list entry to read CO2, 2, 111, REPORTED while
RANGE2 (HIGH) range was active would cause only the last CO
2
reading to be
recorded.
07274B DCN6418