Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 154)

CommunicationsTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 154
6.7.2.3. SELECTING A HESSEN PROTOCOL TYPE
Currently there are two versions of Hessen Protocol in use. The original
implementation, referred to as TYPE 1, and a more recently released version, TYPE 2
that has more flexibility when operating with instruments that can measure more than
one type of gas.
For more specific information about the difference between TYPE 1 and TYPE 2
download the Manual Addendum for Hessen Protocol from the Teledyne API web site:
http://www.teledyne-api.com/manuals/.
To select a Hessen Protocol Type press: