DVM321
14.03.2011 4 ©Velleman nv
3. Parts & Keys
1. Measurement head
2. LCD display with %RH, °F and °C indications,
low battery indication ("BAT" + icon), MIN/MAX + HOLD
indications
3. MAX/MIN/DATA HOLD key: press short to switch between MIN,
MAX and normal recording. Hold the button for 2 seconds to
switch DATA HOLD on or off.
4. %RH, °C, °F function switch key
5. ON/OFF key
6. Backlight button (switch backlight on/off)
7. Battery compartment
4. Operating Instructions
1. Hold the DVM321 in the area to be tested and allow adequate
time for the readings to stabilize.
2. Press the function switch (fig. above #4) to select %RH, °C or °F.
Set the MIN or MAX function (#3) if needed.
3. Read the measurement results.
• Do not immerse the measuring head in liquid ; it is intended for
use in air only.
• Do not expose the humidity sensor to direct sunlight. Do not touch
or manipulate the humidity sensor.
• If the low battery indication appears, the battery is too weak for
adequate measurements. Replace it.
Use this device with original accessories only. Velleman nv cannot be
held responsible in the event of damage or injury resulted from
(incorrect) use of this device. For more info concerning this product
and the latest version of this manual, please visit our website
www.velleman.eu. The information in this manual is subject to
change without prior notice.
© COPYRIGHT NOTICE
The copyright to this manual is owned by Velleman nv. All worldwide
rights reserved. No part of this manual or may be copied, reproduced,
translated or reduced to any electronic medium or otherwise without the
prior written consent of the copyright holder.
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