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＜SPAN＞
[START/STOP] key ↓
Measurement ended ↓
*Please must do the cleaning process and warm up the instrument more than 20 minutes before
starting user calibration, otherwise errors or deviations may result.
*Background adjustment
Note that if background adjustment is performed in a high concentration environment or
improper operation, it may affect the measured value greatly.
Also, if the background adjustment measured value deviates more than ±20 CPM from the
manufacturer's calibration value, a "Calibration Error" message will be displayed on the screen.
In this case, please contact our service center or distributor.
* Sensitivity adjustment
Same as background adjustment, please note the measured value of sensitivity adjustment will
be affected by improper operation and environment.
And if the measured value deviates more than ±20% CPM from the manufacturer's calibration
value, a "Calibration Error" message will be displayed on the screen.
Please contact our service center or distributor.
Next do the sensitivity adjustment, move the cursor to
"SPAN" in the calibration menu, press [SET] key entering
the sensitivity adjustment screen and make sure the
background adjustment is finished before starting
sensitivity adjustment.
Follow the instructions shown on the screen,
1. Pull out (Open) the filter open/close knob
2. Raise up (Close) the inlet cover
3. Switch the sensitivity control knob to "FULL" side
Press the [START/STOP] key when the above actions are
completed.
Same as background adjustment,
there will be a 6 second measurement.
During the measurement, the background instantaneous
value (CPM) will be displayed.
The remaining measurement time is displayed at the
bottom left of the screen.
After the measurement ended, the average value (CPM)
will be displayed on the screen.
Press the [SET] key to apply this value for adjustment,
and the calibration date will be updated.
Press the [MENU] key to cancel and return to menu.
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