LumaSense Technologies IS 6 Advanced - Manual (Page 33)

IS 6 Advanced / IGA 6 Advanced Manual Maintenance · 33
6 Maintenance
6.1 Cleaning the front window
Since the device does not contain parts that require regular maintenance, the only regular
maintenance required is periodic inspection of the front window for build-up of foreign
particiles. If allowed to build up, the particles can influence the energy received by the
instrument.
The IS 6 Advanced / IGA 6 Advanced window is not water soluable and can be cleaned with
standard lens tissue dampened with a commercially available glasses or camera lens cleaning
solution. Use a soft blower/brush (available in camera stores) to remove any grit on the window
before you rub the lens with lens tissue and solution.
Attention: NEVER CLEAN THE IS 6 Advanced / IGA 6 Advanced WINDOW WITH A
DRY TISSUE OF ANY KIND! The only time dry lens tissue may be used is to dry a
window which has already been cleaned with wet lens tissue.
6.2 Calibration
LumaSense calibrated your IS 6 Advanced / IGA 6 Advanced pyrometer at the factory and
delivered your instrument with a Works Certificate. Normally we advise against changing the
factory set calibration. If you believe that the calibration may have changed, perhaps because
your operating environment is severe, an approximate field (on-site) calibration is possible. You
have the choice of an on-site calibration or arranging a more precise calibration at the
LumaSense factory.
6.2.1 Laboratory Calibration
Contact LumaSense for information about calibration at the LumaSense factory. For most of our
customers who do not have large numbers of infrared thermometers in service, we recommend
that our laboratory be chosen to do calibration. When you have many infrared thermometers,
you may find it most convenient and economical to have your own calibration laboratory.
LumaSense has a variety of blackbody calibration sources including very economical ones.
Among these you may find the source most suitable for your own laboratory.
6.2.2 On-Site Calibration
See Chapter 9 Troubleshooting before attempting to perform your own calibration. The
instrument was calibrated at the factory to its original accuracy as stated.
Nearly all erroneous temperature readings are caused by application problems such as:
· Reflections: Unexpectedly high readings may be caused by the IS 6 Advanced /
ISA 6 Advanced “seeing” a reflection of another hotter source, especially if the target
emissivity is less than 0.8.
· Spot Sizes: Ensure the IS 6 Advanced / IGA 6 Advanced is using a proper focused
distance and takes into account the spot size in relation to measuring distance. The
pyrometer can measure objects at any distance. However, the object has to be bigger
than or at least as big as the spot size of the pyrometer in the measuring distance.
· Obscured window: Clean the window. Refer to the cleaning window section 6.1.