Lumasense-technologies IGA 6/23 Advanced Manuel d'utilisateur télécharger pdf (Page 35)

IGA 6/23 Advanced Manual Maintenance · 35

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 IGA 6/23 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 IGA 6/23 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 IGA 6/23 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 IGA 6/23 Advanced

“seeing” a reflection of another hotter source, especially if the target emissivity is less

than 0.8.

· Spot Sizes: Ensure the IGA 6/23 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.

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Lumasense-technologies IGA 6/23 Advanced Manuel d'utilisateur Page 35