The sound level measuring device is a digital device for measuring the sound level in Decibel (dB)
and corresponds to the demands of EN 61 672-1. The SL-451 is classied in Class 2 for general
eld tests (e.g. operative measurements). The measuring ranges can be calibrated via the integra-
ted adjustment feature.
The values measured and the current measurement units/functions are displayed digitally on a large
LCD (Liquid Crystal Display).
A bar graph display enables the detection of fast and short sound levels.
Two frequency weighting lters (A/C) and two time weightings (fast/slow) can be preselected and
allow universal application.
Measuring is possible in a frequency range from 31.5 Hz (Hertz) up to 8 KHz (Kilo Hertz) as well as
a sound level from 30 to 130 dB.
The maximum values as well as the display content can be saved.
In order to suppress interfering wind noise, the device features an attachable wind protector, which
does not interfere with the sound level measuring.
The measuring device also features a display illumination. A data logger for internal measuring value
recording is installed. The measuring values can be transferred to a computer and analysed there
via the USB interface. A proportional voltage (10 mV DC/dB and max. 1 Vrms AC/130 dB) is output
at the AC/DC analog output.
A 9-V block battery (type 1604A) or the power adapter are required for operation.
Measurements must not be carried out under unfavourable ambient conditions.
Unfavourable ambient conditions are:
• wetness or high air humidity
• dust and ammable gases, vapours or solvents
• thunderstorms or similar conditions such as strong electrostatic elds etc.
Unauthorised conversion and/or modication of the device are inadmissible because of safety and
approval reasons (CE). Any usage other than described above is not permitted and can damage the
product and lead to associated risks such as short-circuit, re, electric shock, etc. Please read the
operating instructions thoroughly and keep them for further reference.
To Next Page
Loading...
Need help?
General
