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MAN0530 Issue 15 - 07/17
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.
(4)
Check the Searchline Excel output is as indicated in the above table ±5% fsd.
(5)
Remove the gassing cell.
(6)
Re-zero Searchline Excel.
Note: Pentane cannot be used with the gassing cell. At normal temperatures, this substance
does not vapourise sufficiently to give a useful signal in the short path of the gassing cell.
4.4 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.
Select GAS READING from the Display menu.
(5)
(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.
The second line shows the gas reading and measurement units along with a gas detector
4. MAINTENANCE
61
(up) and
(down) keys on the
Gas Type
Status character
Searchline Excel
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