Velleman DVM322DI Manual
DVM322DI GB
1
DVM322DI -- SOUND LEVEL METER
1. Introduction and Safety Information
Thank you for buying the DVM322DI ! We advise you to read this manual thoroughly. You should only use this
device for the applications described in this manual. Unauthorised applications may cause damage to the device.
Environmental Conditions :
- Max.
altitude
:
2000m
- Max.
relative
humidity :
90%
- Operation temperature : 0 - 40°C
Maintenance
- All repairs and maintenance activities not described in this manual should be handled by qualified personnel.
- Wipe the housing clean from time to time with a dry cloth. Do not use abrasives or solvents on this device.
Safety Symbols
This device is EMC-compatible.
2. Features
This device was designed according to IEC651 type 2, ANSI S1.4 type 2 for sound level meters. The DVM322DI
meets the requirements of safety engineers and industrial safety offices for the monitoring of sound quality in various
environments.
- RS-232 interface with PC.
- data logging capacity with memory for 32000 measurements.
3. Specifications
Standards
: IEC type 2, ANSI S1.4 type 2
Accuracy :
± 1.5dB (under conditions @ 94dB, 1KHz)
Frequency Range
: 31.5Hz-8KHz
Measuring Level
: 30-130dB
Frequency Weighting
: A-C
Microphone
: ½" electret condenser microphone
Digital Display
: 4-digit LCD, resolution 0.1dB, display period 0.5sec.
Analogue Display
: 50-segment bargraph, resolution 0.1dB, display period 50mS
Time Weighting
: FAST = 125mS or SLOW = 1sec.
MAX/MIN Hold
: To hold the highest and lowest values obtained during measurements
Level Ranges
: a total of 4 ranges at step 10dB : 30-80dB, 50-100dB, 80-130dB, 30-130dB
Dynamic Range
: 100dB
Alarm Function
: OVER indicator (value is higher than the upper limit of the measuring range) and
UNDER indicator (value is lower than the lower limit of the range).
AC Output
: 1Vrms at full scale