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T400 Ozone Analyzer Operator’s Manual Communications Setup and Operation
149
6.7.7. HESSEN PROTOCOL GAS LIST ENTRIES
6.7.7.1. Gas List Entry Format and Definitions
The T400 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 to be reported (e.g O
3
, CO
2
, NO
x
, etc.). In the case of
the T400 analyzer, there is only one gas type: O
3.
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 T400 analyzer has two ranges: RANGE1 (LOW)
& RANGE2 (HIGH).
0 - The HESSEN protocol to use 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 T400 analyzer.
GAS ID = An identification number assigned to a specific gas. In the case of the
T400 analyzer, there is only one gas O
3
, and its default GAS ID is 400.
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 T400 analyzer is a single gas instrument that measures O
3
. It’s default gas list
consists of only one entry that reads:
O3, 0, 400, REPORTED
If you wish to have just the last concentration value stored for a specific range this list
entry should be edited or additional entries should be added to the list.
06870C DCN6332