Ion Science Tiger Select - Manual (Page 10)

TIGER MANUAL Ion Science Ltd
Page 10 of 20
Unrivalled Detection. www.ionscience.com
Start up
The Tiger Select will start up in either Standard running mode or TAC mode depending on the mode selected
when it was switched off. In Standard running mode the instrument will work as a standard PhoCheck Tiger
instrument. (See user manual part number: 861265).
Standard running mode has a default sensitivity of 0.1 ppm Isobutylene equivalent (EQ). if higher sensitivity
(ppb) or data logging is required, upgrades can be purchased. Please contact your local distributor for further
information.
TAC mode
TAC mode automatically offers higher sensitivity, selects a response and allows data logging functionality.
The Tiger Select can be left in this mode even through a power cycle or battery replacement.
TAC mode can only be used a 10.0 eV lamp is selected.
The 10.0eV lamp output help filter out many VOC gases associated with Benzene.
Soft keys available within TAC mode
Single log
Single point data log allows individual readings to be logged in memory, logged data can then be
downloaded to Tiger PC for review and analysis.
Multi log
Multiple data logging allows multiple readings to be logged in memory, logged data can then be downloaded
to Tiger PC for review and analysis. The frequency of the data log and other log settings must be setup on
the TigerPC configuration and sent to the instrument before use.
TAC
Pressing the TAC soft key simply enters and exits TAC mode.
Tube mode
Pressing the tube soft key simply enters tube mode
Please note: A tube calibration must be carried out before tube mode can be used. The
following icon will appear until a Tube calibration is carried out. To carry out a tube
calibration see page 13. Tube mode is designed to identify the level of Benzene gas after
TAC mode has identified a significant background. Unlike the other modes of operation
soft keys are unavailable during the Tube mode test.
IMPORTANT: When entering Tube mode the pump will stop until the test cycle begins. This is not a fault
condition.
This mode of operation has two parts; an initial single point reading followed by an optional STEL calculation
however both tests use the same pre-filter tube.
The initial Benzene test has a test time which varies with temperature. This test time is required to condition
the tube which thereafter offer a proportional output relating to the Benzene being sampled.
IMPORTANT
The TAC gas used within TAC mode has a STEL set to 1 ppm, this level has been chosen
based the low STEL levels often associated with Benzene vapour. The Tiger Select TAC
STEL however is not supported by nationally recognised bodies who publish official levels.