TIGER Select Instrument User Manual V3.2
Unrivalled Gas Detect
ion.
Page 27 of 73
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Basic Tube Mode
The Basic Tube Mode consists of a single-point benzene reading only. The benzene test has a test
time which varies with temperature. This test time is required to condition the tube which then
offers a proportional output relating to the benzene being sampled.
Basic Tube Mode Procedure
1.
To enter Tube Mode, select TUBE
using the soft key
A
. The pump will stop running and
the calibration-selected tube type will briefly appear. The temperature screen is then
displayed.
2.
Use the
Up
and
Down
keys to adjust the temperature to reflect the ambient temperature.
The default temperature units are °C. This can be
. Select ‘NEXT’.
3.
The display will prompt for the new tube to be inserted. The tube will need to be prepared
prior to fitting into the instrument. See the
If the Benzene Pre-filter Tube breaks up to the shoulder it must not be used as
this will damage the Probe Seals within Tube Holder when inserted.
4.
Unscrew the cap of the Tube Holder and insert the tube into the Tube
Holder Cap, ensuring the black arrow on the tube is pointing towards the
instrument. Screw the Tube Holder Cap and the tube on to the
instrument.
Select ‘NEXT’.
5.
Press ‘START’ to commence the test cycle. A countdown will indicate the
remaining test time, and a live tube reading will be displayed.
Note that this live reading is for indication only. It is only the final
reading at the end of the test cycle that should be used as reference. The
final reading will automatically be data logged.
6.
Once the countdown has completed, the instrument will display the final reading. Select
‘OK’.
7.
Once the measurement has finished, the display will prompt you to remove the used tube.
Remove the tube and refit the probe.
Select ‘OK’
to return to the main running screen. The selected gas will be displayed briefly.
Advanced Tube Mode
The Advanced Tube Mode has two parts: an initial single point reading as described in Basic Tube
Mode, followed by an optional 15-minute STEL calculation. Both tests use the same Benzene Pre-
filter Tube.
STEL Calculation
The second stage of Tube Mode is optional.
The STEL for benzene will be automatically selected from the Gas Table. If a benzene STEL is not
specified it can be
