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PhoCheck+ 1, 2, 3 & 5000 Ex
Ion Science Ltd
Instrument Menu
Application - Health & Safety Mode (3 & 5)
Modes of operation are selected to suit how the instrument is
.
being used
Health & Safety 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 TWAs are continually
.
calculated and compared to levels set in the instruments gas table
You can not
adjust settings or parameters of the instrument while in Health & Safety mode as
these could effect the ongoing calculations. Should you want to proceed with an
When sel ected
adjustment a WARNING screen will appear. You have the option to continue with
the adjustment by pressing Enter or abort and continue monitoring by pressing the
'Esc' key. Continuing with the adjustment will reset the instrument, calculations will
begin again from 0 once back in Health & Safety mode.
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 IonPC software. 'Survey'
mode is often used in applications where several areas (or Zones) can 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 PhoC heck+ is connected to a PC via the PhoCheck+ software package (see pg 33), the instrument
can be locked in the Menu 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 a n operator for use. When in secure
mode the PhoCheck+ functionality cannot be changed or adjusted. The user can only view the display
screens and switch the instrument On and Off.
Page 26 of 52
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