SDT International SDT170, User Manual

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20. External non ultrasonic sensors
They can only be connected on versions M , M+ and MD .
It is to be reminded that the detector will sense the presence of the sensor and will
automatically change to the appropriate settings, scales and units.
Measurements can be time-dated and logged inside the memory of the
SDT 170 M , M+ or MD equipment.
It is insistently advised to refer to paragraph Important note concerning
the plugging to the connector on page 113 regarding the connecting
procedure, in order to avoid any premature deterioration of the connector
and the plug.
20.1 S
OUND LEVEL METER
Main applications
Designed for the sound measure (dBA), this equipment allows the measure of the
ambient noise and the determination of the level of the hearing protection (safety,
ergonomics).
Description
Its main characteristics are as follows:
Item Data
Function Sound (pressure) level meter
Measuring ranges 45 to + 130 dBA
Precision ± 2 dB at full scale
Resolution 0.1 dB over the whole range
Type of filter
‘A’ weighted, compliant with IEC 651A
Measuring unit dBA
External view of the sound level meter and its bonnet.
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