CODEL
Operation and Maintenance Manual
Issue : A Rev. : 3 Date : 13/11/2018 Ref. : 100351
P a g e | 25
Once zero cal has been completed, the levels can be checked for the individual gases. Connect the gas at the
same flow rate and follow the steps below to check level readings.
Press on the measurements menu and the following screen appears.
Press to select E-Cell CH1. The Display returns to measurement screen displaying E-Cell CH1 reading.
Repeat these steps for the remaining gases of CO and NO
2
.
It is possible to use different calibration gas levels, as long as they are within the maximum measurement
range of the analyser.
6.1.3 Electrochemical Cell replacement
The maintenance due date is an alarm hardcoded into the E-Cell board in the factory.
When the date elapses the alarm LED illuminates to warn the user that the E-Cells are due to be replaced.
Every 18 months it is required to replace the electrochemical cell. The replacement cells will be supplied
from CODEL pre-calibrated complete with PCB.
To check the maintenance due date for the E-Cell, refer to section 5.3.1
Ensure the device is disconnected from the power before performing any internal maintenance
To remove the electrochemical cell, open the TT700 casing and locate the E-Cell.
Electrochemical Cell
PCB
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