DEM700
V. 03 – 29/03/2019 9 ©Velleman nv
8. Troubleshooting
symbol cause possible solution
signal too weak or too
strong
re-measure the distance
light surrounding
measuring point too
strong
choose a measuring point
with weaker surrounding light
working temperature out
of range
carry out measurements
when the ambient
temperature between 0° C
and 40° C
2800 hardware failure contact your local dealer
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 0.05 ~ 60 m (0.16 ft ~ 196.8 ft)
accuracy ± 1.5 mm (± 0.05")
laser < 1 mW class 2
wavelength 650 nm
operating temperature 0° C ~ 40° C (32° F ~ 104° F)
IP rating 54
power supply 2 x 1.5V AA batteries LR06C (incl.)
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