Velleman DVM401 Manual De Instrucciones

1. Introduction
This device combines the functions of sound level meter, light meter, humidity meter and temperature meter and can
be used both professionally and at home.
The sound level function can be used to measure sound levels in schools, offices, airports, etc. and to check the
acoustics of auditoriums, studios and hi-fi installations.
The light function is used to measure luminous intensity. The device automatically compensates for the angle of
incidence. The light-sensitive component is a very stable long-life diode.
Measure temperatures using the built-in temperature-sensitive semiconductor or the K-type thermocouple.
Perform relative humidity measurements with the built-in semiconductor.
The humidity & temperature measuring function is for use a humidity/semiconductor sensor and K-type
thermocouple.
2. Features
• the device measures sound levels, luminous intensity, temperature and humidity
• the 3 1/2–digit LCD displays the following units : Lux, °C, %RH, C & dB and A & dB
• low-battery indication
• luminous intensity from 0.01 to 20000Lux
• sound level range (resolution 0.1dB)
A-weighting LO (low) : 35 – 100dB
A-weighting HI (high) : 65 – 130dB
C-weighting LO (low) : 35 – 100dB
C-weighting HI (high) : 65 – 130dB
• humidity measurements from 25 to 95%RH, fast response and resolution 0.1%RH
• temperature measuring levels from –20°C to +750°C / -4°F to +1400°C
3. Specifications
Display
Polarity
Overrange Indication
Low-Battery Indication
Measurement Rate
Storage Temperature
Auto Power Off
Power Source
Dimensions
Dimensions Photo detector
Sound Level Measurement Range
DVM401
DVM401 – 3 ½-DIGIT 4-IN-1 DMM
1999 counts and the following indications : dB, A & dB, C & dB, Lo & dB,
Hi & dB, MAX HOLD, DATA HOLD indication
automatic negative polarity indication
"OL"
"BAT" is displayed when the battery's voltage drops below the operating
level
1.5 measurements per second, nominal.
-10°C to 60°C (14°F to 140°F)
after ± 10 minutes of inactivity
one 9V-battery (e.g. 6F22)
251 x 63.8 x 40 (H x W x D)
115 x 60 x 27mm
SOUND
A-weighting LO (low) : 35 – 100dB
A-weighting HI (high) : 65 – 130dB
C-weighting LO (low) : 35 – 100dB
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