Cleaning And Maintenance; Technical Specifications - Velleman DEM700 Mode D'emploi

8. Troubleshooting
symbol
signal too weak or too
strong
light surrounding
measuring point too
strong
working temperature out
of range
2800 hardware failure

9. Cleaning and Maintenance

 The IR sensor is the most delicate part of the device and it shall be kept
clean at all times. To do this, only use a soft cloth or cotton bud with a
little water or medical alcohol.
 Allow the lens to fully dry before using the device.
 Wipe the other parts of the device regularly with a moist, lint-free cloth.
Do not use alcohol or solvents.
 Do not submerge the device in water or any other liquid.
 There are no user-serviceable parts. Contact your dealer for spare parts
if necessary.
 The device shall be stored between –20° C and +65° C (–4° F to
+149° F).

10. Technical Specifications

range
accuracy
laser
wavelength
operating temperature
IP rating
power supply
V. 03 – 18/07/2017
DEM700
cause
0.05 ~ 60 m (0.16 ft ~ 196.8 ft)
± 1.5 mm (± 0.05")
< 1 mW class 2
650 nm
0° C ~ 40° C (32° F ~ 104° F)
54
2 x 1.5V AA batteries LR06C (incl.)
9
possible solution
re-measure the distance
choose a measuring point
with weaker surrounding light
carry out measurements
when the ambient
temperature between 0° C
and 40° C
contact your local dealer
©Velleman nv