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FirstCheck+ 1000, 2000, 3000 & 5000
Instrument Menu
When in Health and Safety mode, alarms are triggered by STEL and TWA alarm levels pre-programmed into
the instruments gas table. An alarm in Health & Safety mode indicates the user has been exposed to levels
exceeding those set within the FirstCheck+ gas table. When FirstCheck+ alarms in Health and Safety mode,
the relevant TWA or STEL figure shown on the display will flash. These values cannot be changed either via
the instrument or the FirstCheck+ software. However additional entries can be entered into the gas table via
the FirstCheck+ software with their own STEL and TWA values (see „1
Sound
A range of audible options can be selected to make the FirstCheck+ respond in different ways.
Signal response: When selected, the rate at which the instrument Beeps increases as the level of
the detected gas increases.
Confidence: When selected the instrument Beeps every 15 seconds to indicate it is functioning.
This feature is useful if the instrument is out of sight.
Key Press: The instrument Beeps when any key on the keypad is pressed.
Alarm: This feature disables the alarm sound. For safety reasons Ion Science Ltd strongly
recommends this function is never switched off unless there are specific reasons for not wanting to
silence the alarms.
Calibration
General description
Due to the linear output of the Ion Science PID detector, FirstCheck+ instruments only require a two-point
calibration. The FirstCheck+ scales its linear output across a Zero level (clean air reference) and the Span (a
user defined gas concentration).
Factory Calibration
Factory calibration offers a safe set of calibration data. This should be used if the custom calibration fails and
will keep the unit working until a good custom calibration is completed.
ION Science reccomends an annual service and calibration for users who require a traceable calibration.
During this service the lamp and detector is brought back to factory specifications and new Factory
Calibration data is stored.
(FirstCheck+ 1000, 2000, 3000 & 5000)
(FirstCheck+ 1000, 2000, 3000 & 5000)
Factory calibration is set by Ion Science during
instrument manufacture. Custom calibration can be
set by the instrument user.
Ion Science Ltd
st
PC Software‟ for more information.)
Page 17 of 45
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Factory
Ion Science Ltd
Custom
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