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FirstCheck+ 1, 2, 3 & 5000
Introduction to FirstCheck+
FirstCheck+ is a portable gas detector, suitable for the detection of a large range of Volatile Organic
Compounds (VOC's), Carbon Monoxide (CO2), Oxygen (O2), Hy drogen Sulphi de (H2S) and L EL (Ex plosive)
gases. These can be dangerous from both a poisoning and explosive perspective.
The FirstCheck+ range are fully upgradeable i n the field, purchasing a simple upgrade key can convert a
FirstCheck+ 1000 to a 5000 or a 2000 to a 3000 or any oth er combination.
FirstCheck+ has two principle modes of operation, Health & Safety and Survey mode.
Health & Safety mode is used to check for conformity of short - term exposure levels (STEL) and time -
weighted averages (TWA) that are specific for particula r 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 instruments gas table.
Survey is the default mode of operation whenever the Health & Safety mode is NOT selected. This mode is
often used in applications where several areas (or Zones) are to be monitored and readings data logged. All
sensor readings are real time measurements and alarm levels are set manually.
For more information on these modes of operation please see page 24.
FirstCheck+ versions 2000, 3000 and 5000 automatically data log the instruments readings every second.
These readings are stored in the instrument's memory with a date and time stamp. For more information
please see page 16.
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