TESTO 330, Инструкция по эксплуатации

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6 Using the product
47
6.1.3.3. Sensor protection
Protection limits can be set to protect the sensors against overload.
Sensor protection switch-off is available for the following sensors:
CO, NO.
The sensor protection is activated when the threshold is exceeded.
• testo 330-1 LL: Switch-off.
• testo 330-2 LL: Dilution, if exceeded again: Switch-off.
To deactivate sensor protection the thresholds must be set to 0
ppm.
Calling up the function:
> [ ] → Sensor Settings → Sensor Protection → [OK] .
Setting sensor protection thresholds:
1. Select parameter: [Edit] .
2. Set parameter → [OK] .
3. Save changes: [Finished] .
6.1.3.4. Recalibration / adjustment
CO and NO sensors can be recalibrated and adjusted.
For recalibration / adjustment Testo recommends the use of the
calibration adapter 0554 1205.
If obviously unrealistic readings are displayed, the sensors
should be checked (calibrated) and, if required, adjusted.
Have the recalibration / adjustment carried out by a
qualified service centre approved by Testo.
Adjustments made with low gas concentrations can lead to
accuracy deviations in the upper measuring ranges.
Calling up the function:
>
[ ] → Sensor Settings → Recalibration → [OK] .
Possibly:
>
Enter the password: [Enter] → Enter password → [Next] →
[OK] .
- Gas zeroing (30 s).