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Battery selection
View Data
Units
Display
Unrivaled Gas
Detection.
GasCheck G Zero's its reading at switch on, therefore the
Custom calibration routine only has one stage.
Also see the 'Calibration' section of this manual.
3
The GasCheck G will operate using AA size batteries in
either Alkaline (non rechargeable) or Nickel Metal
Hydride (Rechargeable).
Select the battery type using the 'Up or Down' key and
then press the 'Esc' key to exit to the Main menu.
Failing to select the correct battery type will not damage the instrument or affect it's ability
to detect gas, however it will cause the battery indicator to read incorrectly.
3
The GasCheck G instrument has the ability to data log 10 readings within
its internal memory. To store a reading press the 'ENTER' key while on
the main Running screen. When readings are stored in memory a
symbol will appear on the Main viewing screen.
When the memory is full the 'Data' symbol will flash. The stored data in the memory can be
viewed by scrolling through the logged readings using the 'Up and Down' keys. To delete the
stored data press and hold the 'ENTER' key, the 'trash can' symbol will flash, continue holding
the 'ENTER' key until the data is deleted. Press the 'Esc' key to exit to the Main menu.
3
GasCheck G instruments have the capability of displaying detected readings in a variety of
units; ppm, cc/sec, mg/m
Use the 'Up and Down' keys to select the desired unit and then press the 'Esc' key to exit to
the main menu.
Please note: the Custom Calibration routine automatically selects the type a calibration
depending on this setting. See the 'Calibration' section of this manual.
cc/sec = Cubic Centimeters per second offers a volumetric leak rate that directly
measures the volume of a gas escaping from a given point, it is also known as ml/sec
(Millilitres per second). The GasCheck can typically detect Helium leaks down to 0.00005 of
a cubic centimeters per second.
ppm
= Parts per million, this unit indicates a concentration but can't be used to quantify
a volume of gas leakage.
3
mg/m
= Milligrams per meter cubed, like ppm this unit is also concentration so can't be
used to quantify a volume of gas leakage.
g/yr
= Grams per year offers an alternative volumetric leak rate that directly measures
the volume of a gas escaping from a given point.
3
GasCheck G instruments have the capability of displaying cc/sec and g/yr readings in either
decimal or exponent form. (Readings in ppm and mg/m
form.)
Use the 'Up and Down' keys to select the desired unit. Press the 'Enter' key to display the
next screen. Use the 'Up and Down' keys to select the desired display and then press the
Page 14 of 26
GasCheck G Instrument User Manual V2.4R
3
and g/yr.
3
can only be displayed in decimal
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