Alarm - CODEL Energy Tech 401 Installation, Operation And Maintenance Manual

EnergyTech 401
Operating and Maintenance Manual
5.10.13 Measurement Path
Length
The current value entered for the path length will be displayed for 1 second, then the display will default to zero. The
path length must be re-entered for the unit to calculate gas concentrations correctly.
The path length entered must represent the length of the actual gas pass, not the flange to flange dimension between
the transmitter and receiver.
5.10.14

Alarm

Page: 90
The current value entered for the path length will be displayed for 1 second, then
the display will default to zero. The path length must be re-entered for the unit
to calculate gas concentrations correctly.
NOTE
The transmissivity of a sample of any gas depends both on the concentration and
on the path length through which the radiation is transmitted. Similarly, the
output of the CODEL gas monitor also depends upon the path length of the flue
gas through which the radiation is transmitted.
Effectively, CODEL analysers are sensitive to the product of concentration x path
length and in order to obtain a true value of concentration of gas, it is necessary
to input the correct path length into the processor. This value is then used to
produce a final value of gas concentration.
NOTE
A contact output is available to warn of a high gas concentration.
This contact output may be triggered from any of the four averaging stacks.
Select the source with the ARROW key and enter it with the ENTER key.
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