Calibration By Measurement; Calibration By Calibration Factor; Calculation Of Calibration Factor And Sensitivity - sauter SW 1000 Instruction Manual

4.2.1 Calibration by measurement

keys <◄>, <►>, <▲> and <▼>; to start the calibration, press <START>. After the
calibration, a new calibration factor will be introduced and the user can save or ignore
the result by pressing <ENTER> or <ESC>, respectively. Here you can also see the
process of calibration. The entries with the letter M at the end indicate that the re-
cords have been calibrated by measurement.

4.2.2 Calibration by calibration factor

ing <ESC>. The entry with the letter F at the end indicates that the record has been
calibrated by calibration factor.

4.2.3 Calculation of calibration factor and sensitivity

Sensitivity can be calculated using the following formulas. Based on sensitivity, you
can also calculate the calibration factor and introduce it directly into the sound level.
Cal.F
Where:
Sens
= calibration factor in decibels (dB);
Offset
= microphone sensitivity in mV/Pa;
= offset of the calibration factor in decibels (dB). The value is a result of cali-
bration by measurement and a 50 mV signal. The offset is an own deviation of the
device, which differs depending on the sound level meter.
4.2.4 Calibration by measurement
Calibration by measurement is the recommended method of calibration performed
using a sound calibrator. KERN can supply Class 1 and 2 sound calibrators confor-
mant to GB/T 15173-2010 and IEC 60942:2003.
SW-BA-e-1710
To open this menu, select By Measurement and press <EN-
TER>. Further details concerning the calibrator used and the ap-
propriate adaptation value are provided in Appendix 2, Adaptation
of Control Calibration Frequency.
The calibration level can be adapted within a range from 0 dB to
199.9 dB. To change the calibration level, press the navigation
Select By Calibration Factor and press <ENTER> to open this
menu.
You can adapt the calibration factor manually. Using the naviga-
tion keys <◄> and <►>, you can choose the factor number, and
using the navigation keys <▲> and <▼>, you can save the value
by pressing <ENTER> and return to the previous menu by press-
Cal.F = 20 * log (Sens / 50) + offset
Sens = 50 * 10
((Offset of the calibration factor) / 20)
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