Cleaning The Lens - Fluke Endurance Series User Manual

Following order shows the priorities of the possible failsafe conditions:
1. Heater control temperature over range
2. Heater control temperature under range
3. Internal temperature over range
4. Internal temperature under range
5. Wide band detector failure
6. Narrow band detector failure
7. Energy too low
8. Attenuation too high (> 95%)
9. Attenuation > 95% ("dirty window")
10. 2-Color temperature under range
11. 2-Color temperature over range
12. Wide band temperature under range
13. Wide band temperature over range
14. Narrow band temperature under range
15. Narrow band temperature over range
Examples of failsafe conditions:
1. 1-Color temperature is selected to show on the temperature display. 2-Color
temperature is transmitted in burst mode. Wide band temperature is under range. The
2-Color temperature is 999°C.
Outputs:
Temperature Display:
RS485 or LAN/Ethernet:
Analog Output:
Relay:
2. 2-Color temperature is selected to show on the temperature display. All three
temperatures are transmitted in burst mode. Two-color temperature is 1021.0°C. Wide
band temperature is 703.0°C. Narrow band temperature is 685.0°C. Attenuation is
above 95%, the "dirty window" threshold.
Outputs:
Temperature Display:
RS485 or LAN/Ethernet:
Analog Output:
Relay:
11.3.

Cleaning the Lens

Keep the lens clean at all times. Any foreign matter (dust, fingerprints...) on the lens or window
surface will affect 1-Color measurement accuracy and may affect 2-Color accuracy too.
However, care should be taken when cleaning the lens.
To clean the window, do the following:
1. Lightly blow off loose particles with "canned" air (used for cleaning computer
equipment) or a small squeeze bellows (used for cleaning camera lenses).
2. Gently brush off any remaining particles with a soft camel hairbrush or a soft lens tissue
(available from camera supply stores).
3. Clean remaining "dirt" using a cotton swab or soft lens tissue dampened in distilled
water. Do not scratch the surface.
For fingerprints or other grease, use any of the following:

Denatured alcohol

Ethanol
Apply one of the above to the lens. Wipe gently with a soft, clean cloth until you see colors on
the surface, then allow to air dry. Do not wipe the surface dry, this may scratch the surface.
If silicones (used in hand creams) get on the window, gently wipe the surface with Hexane.
Allow to air dry.
Innovative High Temperature Fiber Optic Infrared Pyrometers
EUUU
C T999.0
2 to 3 mA
abnormal state
1021.0
C T1021.0 W703.0 N685.0
scaled to temperature, between 4 and 20 mA
abnormal state
highest priority
lowest priority
Maintenance
83