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Measuring Ranges
The Sonus instrument range has been specifically designed to utilise only three
measuring ranges. The three available ranges ensure complete accuracy
throughout the entire dynamic range whilst ensuring the instrument remains
low power to maximise operational life from one 9V (PP3) battery.
The measuring display ranges available are as follows: -
Model 116L (dB) Model 216L (dB) Model 116E (dB)
Models I & B (dB)
30 – 100
35 – 100
20 – 90
35 – 100
50 – 120
50 – 120
40 – 110
55 – 120
70 – 140
70 – 140
60 – 130
75 – 140
Please note that the GA257L and GA257B Dose meter models operate on the
fixed range 70–140 dB and 75–140 dB respectively.
Changing Range – All models except GA257B and GA257L
To change the measuring range, press the
key on the keypad.
The current measuring range will be shown and indicated with an asterisk *.
Use the
Up
and
Down
Arrow Keys
to scroll through the available
ranges.
Press the
key to select the required range. The instrument briefly displays
the following to confirm a change has been made and returns to the last
parameter screen unless multiple screens have been accessed in which case
the sound pressure level parameter screen will be displayed: -
Press the
key to return to the previous screen without selection. If
multiple screens have been accessed the sound pressure level parameter
screen will be displayed.
Press the
key to return to sound pressure level parameter screen without
making a selection. Returning to the previous screen is also possible
C
dB
OK
dB
50-120*
55-120*
DONE
