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FirstCheck+ 1, 2, 3 & 5000
Instrument Menu
Application - Health & Safety Mode (3 & 5)
Modes of operation are selected to suit how the instrument is being used. Health & S a fety mode is used to
check for conformity of short-term exposure levels (STEL) or time -weighted averages (TWA) that are specific
for particular hazardous environments (for example EH40 in the UK and OSHA in the USA). In this mode of
operation STEL's and TWA's are continually calculated and compared to levels set in the instrument s gas
table.
You can not adjust settings or parameters of the instrument while in
Health & Safety mode as this could affect the ongoing calculations.
Should you want to proceed with an adjustment, this must be done using the 1stPC
software supplied.
There will be a symbol on certain screens when using the instrument to indicate when
Health & Safety mode is active.
Application - Survey Mode
'SURVEY' is the default mode of operation whenever the 'Health & Safety' mode is NOT selected. All
functions can be adjusted or selected in this mode unless the 'Security mode' is set via the 1stPC software.
'Survey' mode is often used in applications where several areas (or Zones) ca n be monitored and readings
data logged. Saved data can then be downloaded to a PC for long -term storage and review. High and low
alarm levels can be set.
Security
When the FirstCheck+ is connected to a PC via the FirstCheck+ software package (see pg 27), the
instrument can be locked in the Application Settings area of the software package.
This facility allows the instrument to be set-up by a qualified or competent person, locked and then handed
to an operator for use. When in secure mode the FirstC heck+ functionality cannot be changed or adjusted.
The user can only view the display screens and switch the instrument ON and OFF. To connect the
Firstcheck+ to the PC software when this mode is active, the instrument must be OFF, then switched ON
while it is placed in front of the Infra-red device.
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When Selected
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