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 – 29/03/2019
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