SV 104A USER'S MANUAL_______________________________________________________
10
1 INTRODUCTION
Now, the SV 104A instrument is even more revolutionary approach to occupational health and safety
noise monitoring offering voice comments, audio events recording and vibration shock detection
functions which are new and useful concepts in an instrument of this size. It is a cable-free dosimeter and is
typically attached to the user’s shoulder, close to the ear using the mounting clips supplied.
This personal dosimeter has an incredibly robust 1/2" MEMS microphone (part number ST 104A)
enabling easy and automatic calibration using most commonly available acoustic calibrators.
The class beating, high resolution, amazing colour OLED screen displays information in both text and
graphical form and offers excellent visibility in dark sites as well as in full daylight conditions. This makes taking
noise measurement a real pleasure.
Three independent acoustic profiles allow parallel measurements with separately defined filters
and RMS detector time constants. Each profile provides an extensive number of results (like Leq, Lmax, Lmin,
Lpeak, L, LE,…). All required weighting filters (A, C, Z) can be calculated in parallel.
For instance, it is trivial to set one profile to monitor noise parameters using the ACGIH (American
Conference of Governmental Industrial Hygienists) pre-set, second profile set to OSHA HC (Occupational
Safety and Health Administration - Hearing Conversation) pre-set and simultaneously monitor noise with the
OSHA PEL (Occupational Safety and Health Administration – Permissible Exposure Level) settings.
Using the computational power of its digital signal processor the SV 104A instrument can simultaneously
measure the dosimeter results and perform real time 1/1 Octave & 1/3 Octave analyses including the
calculations of the statistical levels.
An inbuilt tri-axial accelerometer for vibration shock detection firmly places SV 104A as both the most
technically advanced and the most robust personal dosimeter out there providing also information on the time
when dosimeter is not used by the worker.
Advanced time history logging for each profile provides safe and complete information about
measured signal in the internal large 8GB memory.
The instrument is powered from internal new generation Li-ion rechargeable batteries offering circa 48
hours
of continuous operation. Ultra-low battery self-discharge is about 1% per year. The powering and
charging of the instrument from the USB interface is provided which also enables easy data exchange
connection between the SV 104A and a PC without the requirement of a special docking station. Alternatively,
powering and charging of the instrument is possible with one of SB 104A-X series docking station with
the USB interface which also enables easy data exchange with PC.
The instrument works with Svantek’s specialist health and safety software packages – Supervisor,
mobile Assistant, and also with the full analysis package SVAN PC++.
Robust and lightweight design and Low Energy Long Range Bluetooth
®
Smart wireless interface
enhances the exceptional features of this new generation instrument. Add to it the automatic calibration
feature and one can say: “Never before has a noise dosimeter been so accomplished yet so affordable, making
your measurements more accurate and reliable than ever before”.
To get started quickly with the SV 104A, the first part of the manual describes basic noise dosimetry
information followed by a guide to setting up the dosimeter and running measurements.
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