velleman DEM201 Digital Decibel Level Meter User Manual
- June 6, 2024
- Velleman
Table of Contents
velleman DEM201 Digital Decibel Level Meter
Overview
Introduction
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 choosing Velleman! Please read the manual thoroughly before
bringing this device into service. If the device was damaged in transit, do
not install or use it and contact your dealer
Safety Instructions
- Keep this device away from children and unauthorized users.
- Keep this device away from rain, moisture, splashing, and dripping liquids.
- Protect this device from shocks and abuse. Avoid brute force when operating the device.
- Protect the device against extreme heat and dust.
- There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.
There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.
- Familiarise yourself with the functions of the device before actually using it.
- All modifications of the device are forbidden.
- Only use the device for its intended purpose. Using the device in an unauthorized way will void the warranty.
Overview
Refer to the illustrations on page 2 of this manual.
| 1 | windscreen |
|---|---|
| 2 | LCD display |
| 3 | A/C weighing button |
| 4 | MIN/MAX button |
| 5 | range level button |
| --- | --- |
| 6 | fast/slow button |
| 7 | on-off button |
| 8 | battery compartment |
Display
| 1 | under-range |
|---|---|
| 2 | MAX |
| 3 | MIN |
| 4 | fast sampling |
| 5 | slow sampling |
| 6 | over-range |
| 7 | level range |
| 8 | analogue level range |
| 9 | current reading |
| --- | --- |
| 10 | battery level |
| 11 | auto range |
| 12 | data hold |
| 13 | dBC |
| 14 | dBA |
| 15 | auto power-off |
Battery
- To replace the battery, make sure the device is switched off.
- Open the battery compartment at the back using an appropriate screwdriver.
- Take out the old battery and replace with a new and identical 9 V battery following the polarity markings inside the compartment.
- Close the battery compartment.
Warning: Do not puncture batteries or throw them in the fire as they may explode. Do not attempt to recharge non-rechargeable batteries (alkaline). Dispose of batteries in accordance with local regulations. Keep batteries away from children.
Operation
- Press the on-off button for 1 second to switch on the meter.
- Briefly press the on-off button to switch on the backlight.
- Press the A/C weighing button to select the A or C weighing frequency.
- Press the fast/slow button to select the fast (1 sample/125 ms) or slow (1 sample/1 s) weighing mode.
- Press the range level button to select the range level.
- Aim the microphone to the sound source at a distance of 1 to 1.5 m. The sound level appears on the display.
- Briefly press the MIN/MAX button to freeze the reading on the display. Press again to unfreeze.