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M400E Ozone Analyzer Operator’s Manual 357BRemote Operation Of The M400E
8.5.6. HESSEN PROTOCOL GAS LIST ENTRIES
8.5.6.1. Gas List Entry Format and Definitions
The M400E 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 M400E
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 M400E
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 M400E analyzer.
GAS ID = An identification number assigned to a specific gas. In the case of the M400E 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 M400E 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.
04315 Rev. C1 143