3
EVM2050 – ANALOGUE SOUND LEVEL METER
1. Introduction and Characteristics
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm
the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to
a specialized company for recycling. This device should be returned to your distributor or to a local recycling
service. Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Thank you for buying the
EVM2050
! Please read the manual thoroughly before bringing this device into service.
If the device was damaged in transit, don't install or use it and contact your dealer.
The
EVM2050
allows you to measure the sound level in virtually every acoustic environment (high or low frequency,
high or low sound levels, broadband, interrupted or continuous). It can be used to measure the noise level in
factories, schools, offices and airports, or to test the acoustics of studios, theatres and hi-fi installations. The
EVM2050
has an easily readable result readout, which allows swift measurements in any location.
•
Battery level readout
(see §3)
•
7 selectable ranges
: for 50 to 126dB measurements (see §4)
•
RCA output
: to connect the device to a hi-fi installation or test equipment (see §5)
•
Measuring frequency: fast / slow response
: to measure sound peaks or average sound levels (see §6)
•
A & C weighting
: for acoustic analyses and measurements (see §7)
2. Specifications
Selector position
60dB 70dB 80dB 90dB 100dB 110dB 120dB
Measuring range
50-66dB 60-76dB 70-86dB 80-96dB 90-106dB 100-116dB 110-126dB
Load impedance
min. 1K
Ω
Distortion
< 2% @ 1kHz, 0.5V
Microphone electret
condenser
microphone, omnidirectional,
more directional at higher frequencies
Power
1 x 9V battery
Accuracy
± 2dB @ 144dB
Standard 0.2dB
Weighing
A or C
Response
fast or slow
Output signal deviation
max. 1V @ 1kHz
Battery test
“OK” between 7 & 10.5V
Battery life
110 hours (alkaline battery)
Dimensions (H x W x D)
160 x 62 x 44mm
Weight ±
185g
3. Battery
The
EVM2050
requires one 9V battery. Alkaline batteries usually give better results and last longer. Open the battery
compartment and remove the old battery. Insert the new one. Mind the polarity.
To test the battery, put the RANGE selector to BATT: if the meter moves to the BATT TEST area, the battery is OK.
REMARKS:
•
Set the RANGE selector to OFF when you are not using the
EVM2050
. That way the battery will last longer.
•
Remove the battery when you will not be using the
EVM2050
for a while.
Содержание EVM2050
Страница 2: ......
