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MAN0530 Issue 09 October 03
2104M0506
To get the best accuracy when using the gassing cell:
(1)
Connect the gassing cell to the Searchline Excel.
(2)
Zero Searchline Excel with the empty gassing cell.
(3)
Apply the test gas to the gassing cell and allow sufficient time to fully flush the cell
without pressurising it and check that the Searchline Excel output stabilises.
Check the Searchline Excel output is as indicated in the above table ±5% fsd.
(4)
(5)
Remove the gassing cell.
(6)
Re-zero Searchline Excel.
Note: Pentane, Hexane, Ethanol and Methanol cannot be used with the gassing cell. At normal
temperatures, these substances do not vapourise sufficiently to give a useful signal in
the short path of the gassing cell.
5.4 DISPLAY GAS READING
This procedure displays details about the current gas/gas table. Carry out the following procedure:
(1)
Connect the SHC1 Handheld Interrogator to the gas detector.
See Connecting the Interrogator to the Searchline Excel Gas Detector in section 3.7.6.
(2)
Switch on the SHC1 Handheld Interrogator.
See Powering Up in section 3.7.6.
(3)
Select DISPLAY from the Main menu by pressing the
keypad to navigate through the menu options.
(4)
Press
on the Interrogator keypad to display the Display menu.
(5)
Select GAS READING from the Display menu.
(6)
Press
on the keypad.
A display similar to the following is now displayed.
Current Reading
The first line of the display shows the name of the gas or its identifier in a special gas
table.
5. MAINTENANCE
Excel Methane
0.00LEL.m
75
(up) and
Gas Type
/
Status Character
Searchline Excel
(down) keys on the
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