Velleman DVM171THD - Manual (Page 6)

DVM171THD
V. 03 – 12/06/2013 6 ©Velleman nv
4. Slide the data logger back in the housing until it snaps into place.
Note: Make sure that you position the housing with the right side upward: the
tab [a] on the data logger should fit into the notch [b] in the housing. If you
place the housing upside down, pull firmly to remove it and place it back in the
correct position.
5. Configure the data logger using the enclosed software.
Note: Leaving the device in the USB port will reduce the battery life.
9. Sensor Reconditioning
Over time, the internal sensor may become compromised as a result of pollutants,
chemical vapours, or other environmental conditions. This can lead to inaccurate
readings. To recondition the internal sensors, proceed as follows:
1. Heat the data logger to +80 °C (+176 °F), humidity < 5 % for 36 hours.
2. Keep the data logger at +20 to +30 °C (+70 to +90 °F), humidity > 74 % for
48 hours.
10. Technical Specifications
relative humidity overall range 0 – 100 % ± 5.0 %
relative humidity
accuracy
0 % – 20 % ± 5.0 %
20 % – 40 % ± 3.5 %
40 % – 60 % ± 3.0 %
60 % – 80 % ± 3.5 %
80 % – 100 % ± 5.0 %
temperature overall range -40 °C to 70 °C (-40 °F to 158 °F)
temperature
accuracy -40 °C to -10 °C (-40 °F to +14 °F) ± 2 °C (± 3.6 °F)
-10 °C to +40 °C (+14 °F to +104 °F) ± 1 °C (± 1.8 °F)
+40 °C to +70 °C (+104 °F to +158 °F) ± 2 °C (± 3.6 °F)
dew point overall range -40 °C to 70 °C (-40 °F to 158 °F)
dew point accuracy 25 °C, 40 – 100 % RH ± 2.0 °C (± 4.0 °F)
logging rate selectable sampling interval, from 2 seconds up to 24 hours,
operating temperature -35 °C to 80 °C (-31 °F to 176 °F)
power supply 3.6 V lithium ½ AA (order code LS14250, incl.)
battery life ± 1 year
dimensions 101 x 25 x 23 mm
weight 42 g
Use this device with original accessories only. Velleman nv cannot be held
responsible in the event of damage or injury resulting 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 may be copied, reproduced, translated or
reduced to any electronic medium or otherwise without the prior written consent of
the copyright holder.