Instrument Storage; Confidence Signals; Display Symbols - Linde G-TECTA SG Operating Manual

Instrument Storage

In order to optimise sensor performance and lifetime,
your G-TECTA SG instrument should be stored in a
®
safe, non-hazardous area. The area should be clean
and dry, between temperature ranges 0-30°C, and at
a humidity level of 20-90%RH.
Normal Operation and Confidence Signals
The gas reading is displayed from the sensor
channel in the G-TECTA
The screen will display the current level of gas, the
unit of measurement and the battery status. The
"ok" symbol will flash, indicating the instrument is
operating correctly.
Always check the gas type being monitored by your
instrument and ensure you have been trained on
your site health and safety procedures.

Confidence Signals

To give you added confidence the instrument is
operating correctly, the G-TECTA
seconds):
1. Sound a short beep
2. Flash a blue LED
In addition the "ok" icon will flash on the display

Display Symbols

Full
Battery
!
When the battery is fully charged, the battery icon
will show 3 black bars. When the battery is empty,
the battery icon flashes and the instrument will
sound warning beeps.
WARNING
 When the battery charge is
completely empty, G-TECTA
off automatically.
TWA Alarm
The TWA alarm for toxic gases will operate when
the short-term (15 minute) or long-term (8 hour)
time weighted average alarm levels are exceeded.
The G-TECTA SG will display "SWTA" (15 minutes)
®
or "LTWA" (8 hours).
WARNING
 TWA alarms cannot be
cleared. TWA alarms are functional for toxic gas
instruments only.
SG instrument.
®
SG will (every 10
®
SG will switch
®
Display Menu Options
The G-TECTA SG menu is displayed when you press
®
the mode button twice. There are up to 4 menu
options. To scroll between the different options,
press the mode button once. To select the menu
option you require, double click on the selected
icon. When the Peak and TWA menu options are
selected the relevant icon will be displayed on
the screen.
OK
0.0
ppm
Peak
The Peak menu option displays the highest gas
level for flammable and toxic gases, or the lowest
level of oxygen, since the instrument was switched
on or was last reset.
The Peak feature is mainly used for confined space
entry checks, where the instrument is lowered into
a potentially hazardous environment (instead of
using a sampling tube), and also for viewing peak
gas exposure at the end of a shift.
TWA
The TWA menu option alternatively displays the 15
minute and 8 hour time weighted average reading
for toxic gases since the unit was switched on.
Peak Reset
The Peak Reset menu option clears the current
peak value in the instrument. The Peak value
should be cleared before any confined space
entry tests are performed.
Zero
0.0
The Zero menu option will reset the sensor in the
instrument. When the zero function has been
completed, the instrument will return to normal
operating mode.
WARNING
 Always ensure you are in fresh
air when using this feature. Zeroing an instrument
in a contaminated atmosphere could result in
incorrect gas readings.
UK
Peak display
OK
OK
0.0
ppm
ppm
7