KANOMAX 3443 Digital Dust Monitor - Manual (Page 28)

3. Display Description and operation Procedure
22
To perform sensitivity adjustment
Before performing a sensitivity adjustment, be sure to do the background
adjustment. After background adjustment, turn the sensitivity knob to the
“FULL” side.
The date of the last sensitivity adjustment and standard count value are
displayed.
Press [START/STOP] key to start a measurement.
A measurement will be performed for 6 seconds. During a measurement
the instantaneous value of the standard count (CPM) will be displayed.
The remaining measurement time will be displayed on the bottom of the
display.
The standard count value (CPM) at the time is displayed on the screen.
To perform Sensitivity Check with this value, select SET. If not, select
CANCEL.
Press [▲] [▼] keys to move the cursor, and press [SET] key to configure
the setting. After the adjusted value is displayed for about 2 seconds, the
display will go back to the CALIBRATION screen.
* To perform an accurate calibration make sure the instrument is acclimatized to the ambient temperature
of the place where the calibration work is performed. (Leave the instrument at least for 20 minutes.)
An accurate calibration cannot be performed without sufficient warm-up operation.
* Background Adjustment
Performing Background Adjustments in a highly concentrated environment or making an operation
error will influence a measurement value significantly. Therefore, please pay attention when
performing a background adjustment.
When the background adjustment value differs from the manufacturer’s calibrated value by ±20 counts,
it is considered as an error and the adjustment value cannot be stored. If that is the case, please contact
your sales representative or KANOMAX service center.
* Sensitivity Adjustment
Just as the Background Adjustment, performing Sensitivity Adjustment in the highly concentrated
environment or making an operation error will influence a measurement value significantly. Therefore,
please pay attention when performing a background adjustment.
When the sensitivity adjustment range differs from the manufacturer’s calibrated range by more than
±20%, the adjustment value cannot be stored. If that is the case, please contact your sales representative
or KANOMAX service center.
[START/STOP] Key
The measurement will
finish in 6 sec.
*Calibration date is updated after “SPAN CALIBRATION”. It doesn’t track the date for “BACK
GROUND ” calibration.