Emerson IM-106-5500 Manual Do Utilizador

IM-106-5500, Original Issue

August 2005

CCO 5500

4-14

Select this option by pressing the ENTER key. 
The ARROW keys will now display the available 
options from within this sub-mode. When the 
option that requires changing is displayed, 
press the ENTER key. When all required changes have been made, select 
the EXIT option and press ENTER. 

To prevent any unauthorized tampering with the 
set up information, it is important that the 
security code be changed from the factory 
setting. Each digit is selected with the ENTER 
key and changed with the ARROW keys. 

NOTE
It is important to make a note of this number otherwise it will not be possible to 
change the instrument set up. 

If the system is being used as part of an integral 
monitoring system and the serial input and 
outputs are being used, the central processor 
requires a 'Device Identity' to identify each 
instrument. This number must be unique for each equipment item, and can be 
set from 1 to 30 as required. 

NOTE
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 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 CCO 
5500 analyzer gas monitor also depends on the path length of the flue gas 
through which the radiation is transmitted. 

The CCO 5500 analyzer is 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
The path length entered must represent the length of the actual gas pass, not 
the flange to flange dimension between the transmitter and receiver.