Teledyne t320u Manuale Utente

Communications Setup and Operation 

Teledyne API – Model T300/T300M CO Analyzer 

162 

6.7.3. HESSEN PROTOCOL GAS LIST ENTRIES  

6.7.3.1. HESSEN PROTOCOL GAS ID 

The T300/T300M Analyzer keeps a list of available gas types.  Each entry in this list 
takes the following format: 

WHERE: 

GAS TYPE  =  The type of gas to be reported (e.g. CO, CO

2

, O

2

, etc.).

 

=  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 T300/T300M Analyzer 
has two ranges: RANGE1 or LOW & RANGE2 or HIGH (See 
Section 5.4.1). 
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 T300/T300M Analyzer. 

 

=  An identification number assigned to a specific gas.  In the 

case of the T300/T300M Analyzer in its base configuration, 
there is only one gas CO, and its default GAS ID is 310.  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. 

While the T300/T300M Analyzer is a single gas instrument that measures CO, it can 
have additional, optional sensors for CO

2

 or O

2

 installed.  The default gas list entries for 

these three gases are: 

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 to the list. 

EXAMPLE:  Changing the above CO gas list entry to read: 

would cause only the last CO reading while RANGE2 (HIGH) range was active to be 
recorded. 

06864B DCN6314