12  Maintenance — Cleaning and Calibration

12.1  Cleaning

12.1.1  Camera unit housing, cables, and other items

12.1.1.1  Liquids

Use one of these liquids:
  • Warm water
  • A weak detergent solution

12.1.1.2  Equipment

A soft cloth

12.1.1.3  Procedure

Follow this procedure:
  1. Soak the cloth in the liquid.
  2. Twist the cloth to remove excess liquid.
  3. Clean the part with the cloth.

12.1.2  Infrared lens

    Use one of these liquids:
  • A commercial lens cleaning liquid with more than 30% isopropyl alcohol.
  • 96% ethyl alcohol (C2H5OH).
    Equipment:
  • Cotton wool

Follow this procedure:

1

Soak the cotton wool in the liquid.

2

Twist the cotton wool to remove excess liquid.

3

Clean the lens one time only and discard the cotton wool.

12.2  Calibration

12.2.1  About calibration

When ”Calibrating…” is displayed on the screen, the camera is performing what is called a ”non-uniformity correction” (NUC). The camera performs a NUC automatically, for example at start-up and every now and then during operation.

12.2.2  Verify calibration

FLIR Systems recommends that you verify the camera calibration yearly. You can verify the calibration yourself or with the help of a FLIR Systems Partner. If preferred, FLIR Systems offers a calibration, adjustment, and general maintenance service.
    To verify the camera calibration, do the following:
  1. Close the screening software and log in to the camera web interface using a web browser.
  2. Log into the camera using the credentials found on the calibration certificate.
  3. Add a measurement spot and aim it at a black body set to a known temperature.
  4. Make sure the camera is in focus and note the temperature. The value provided by the camera should be the black body temperature ±0,3 C”