6 | Operation
INFICON
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IRwin-Operating-instructions-mina66en1-15-(1904)
O
2
0.1 - 25 Vol%
You can readjust the zero point of the %LEL value if needed. This can be done if
deviation is within ± 5 %LEL. Press lower left button if "0" appears in blue.
Deviation outside ± 5 %LEL is an indication that the system needs to be calibrated.
If desired you can change the primary target gas from methane (CH
4
) to propane
(C
3
H
8
) or butane (C
4
H
10
). The leak detector will then recalculate the signals to propane
or butane values using certified correlation curves.
Use this feature if you need to work on propane or butane installations.
For changing gas type see "Change gas type for %LEL measurement [
Status LED
Keep an eye on the status LED when working in either of the safety certified modes
Ex or Ex Tox. The LED is green when the leak detector works properly and no gas
alarm is activated.
Listen also for the acoustic “alive signal” that beeps every 20 s to indicate normal
operation if there are no gas alarms.
The status LED changes to red when a gas alarm is triggered or an error exists.
Status LED is yellow in special states such as when in setting menus or calibration
etc. Blue status LED means normal operation in all other modes.
WARNING
Explosion risk may exist when "alive" signal not present.
When operating in any of the two safety related modes Ex and Ex Tox respectively,
the leak detector will confirm its proper function with a short acoustic "alive" signal
every 20 s and by the status LED being green.
► Leave hazardous areas immediately if the alive signal does not sound every 20 s.
► Do not use the leak detector until it operates normally again.
Ex Tox
The acoustic signal and the status LED are the primary alarm signals. All gas alarms
have a latching function. After a gas alarm is triggered, a check mark key appears in
the upper right corner of the display.
You can mute the acoustic alarm by pressing the check mark key. The alarm will
come on again if a new alarm is triggered.
Summary of Contents for 580-000
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