Linde G-TECTA 4G Operating Manual page 14

14
WARNING
The accuracy of G-TECTA

instruments should be checked periodically with
known-concentration of calibration gas. Failure
to check accuracy can lead to inaccurate and
potentially dangerous readings.
There are three methods of instrument calibration
available: G-TECTA 4G calibration can be
®
performed directly on each instrument (one button
calibration), by utilising G-TECTA
using the Linde G-DOCKA
gases should be used.
How to Perform a One Button Calibration Test
1. Ensure you are in clean air and the
instrument is in normal operating mode.
Double click the mode button and select
"Zero" from the options menu by double
clicking on the "Zero" icon. G-TECTA
will perform an Auto Zero.
To perform a one button calibration,
complete the next steps within 15 minutes
of completing the Auto Zero.
2. Fit the flow cap onto the front of the sensors
and attach the hose from the regulator. Attach
the outlet hose to 'vent gas away' – do not
extend this hose, restrict or allow kinks.
3. Swipe the Gas Test Key over the Linde label on
the front of the instrument. The G-TECTA
will activate the Calibration Mode and show
"CAL" and "????" on the display.
4. Press the mode button within 10 seconds to
confirm calibration.
Note: If the mode button is not pressed within 10
seconds then the instrument mode will change to
Gas Test Mode.
4G
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PC software or by
®
Hub. Certified calibration
®
4G
®
4G
®
5. G-TECTA 4G will display a progress bar and
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an "x" will appear against each gas type.
6. Apply the gas whilst the progress bar is
counting down.
Note: You can abort the Calibration test by
pressing the mode button at any time whilst
the test is in progress.
7. The G-TECTA 4G instrument will adjust the
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value on the gas sensor to match the stored
calibration gas value within the sensor module.
8. G-TECTA 4G will display a " " or "x" against
®
each sensor to indicate PASS or FAIL.
9. If any of the G-TECTA
calibrate successfully, the gas type will remain
marked with a "x" and the warning messages
"Gas Test Failed" and "Send for Calibration" will
be displayed. The G-TECTA
to a Linde Group Authorised Service centre for
re-calibrating or sensor replacement.
Note: Gas Test pass and fail, and calibration
pass, fail and values are stored in the Event log.
Note: Some sensors may not be calibration
enabled. Oxygen sensors are by default not
calibration enabled as they are calibrated in fresh
air by zeroing.
WARNING
 One button calibration will check
for small drifts of stored calibration value. The Linde
Group recommends the G-TECTA
certified calibration at six monthly intervals.
4G sensors do not
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4G must be sent
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4G is sent for full
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