Velleman DVM401 Bedienungsanleitung PDF herunterladen (Seite 5)

DVM401 Rev. 02

09.01.2014 ©Velleman nv

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°F

3. Overview

Refer to the illustration on page 2 of this manual.

1. LCD display: 3 ½-digit LCD. Displays a wide variety of units (Lux, x

10 Lux, °C, °F, %RH, dB, A, C, Lo, Hi) and also gives ‘BAT’, ‘MAX

HOLD’ and ‘DATA HOLD’ indications.

2. Power button: activates or deactivates the device

3. Select button: Used to select function and range

4. MAX HOLD: Press this button to hold the maximum reading. Press

again to release the reading and continue your measurements.

5. DATA HOLD: Press the HOLD button to hold a particular reading

and press it again to continue your measurements.

6. Function switch: Select temperature, humidity, sound level and

luminous intensity with this switch.

7. Microphone: built-in electret condenser microphone

8. Photo detector: long-life silicon photo diode is built in

9. Sensor for humidity measurements is built-in

10. Temperature terminal: insert the temperature probe in this

terminal

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Velleman DVM401 Bedienungsanleitung Seite 5