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CHAPTER 1
– How to use TECHKON DENS
1.5 Care and maintenance
DENS is a highly-precise optical instrument. It is designed to work in harsh, industrial
environments. However, it should be handled with care. Avoid mechanical shocks,
heat, dusty or humid environments.
Cleaning
The measurement head with the optical system is sealed against dust and dirt. Take
nevertheless care that the visible, open measurement aperture is always free of dust.
You can clean the measurement aperture with oil-free, clean compressed air and a
brush used for cleaning photographic equipment.
Clean the device casing and the display window only with a soft cloth and a non-
aggressive plastic cleaner. Never use alcohol or chemically aggressive solvent-based
cleaners which can destroy the surfaces.
Please do not stick any labels at the bottom of the device. This could lead to faulty
measurements, because the direct contact – which is important for the correct optical
field of depth – might not be maintained
Warranty
The warranty for TECHKON products is 24 months starting with the date of purchase.
The invoice is the certificate of warranty. The warranty is invalid if the damage is caused
by inadequate use of the device.
Should a TECHKON product do not work according to the specification, please contact
us before sending us the device. In most cases we can solve the problem over the
phone or via E-mail.
Inspection intervals
TECHKON DENS is maintenance free. We recommend to
validate the complete func-
tionality of the devices in a 24 months time interval
in the TECHKON service cen-
ter.
Please send the device always securely in the original packing. For a flat fee the device
will be cleaned, checked and recalibrated. In case a repair or exchange of components
should be necessary we will inform you in advance.
