Fluke Endurance E3ML - Air purge collar (E-AP)

Accessories
Mechanical Accessories
75
9.2.1. Air purge collar (E-AP)
The Air Purge Collar accessory is used to keep dust, moisture, airborne particles, and vapors
away from the lens. It can be installed before or after the bracket. It must be screwed in fully.
Air flows into the 1/8” NPT fitting and out the front aperture. Air flow should be a maximum of
(0.5 to 1.5 liters/sec or 0.13 to 0.4 gallon/sec). Clean (filtered) or “instrument” air is
recommended to avoid contaminants from settling on the lens. Do not use chilled air below
10°C (50°F).
Figure 61: Air purge collar (E-AP)
Focus the instrument before attaching the air purge collar.
9.2.2. Pipe adapter to attach sighting tubes (E-PA)
The Pipe Adapter accessory is used to adapt a 12” (300mm) sighting tube to the Endurance
device. The E-PA has two inner threads to adapt the outer Endurance thread (1.5” UNC) to the
outer sighting tube thread (1.5” NPT.
Figure 62: Pipe adapter to attach sighting tubes (E-PA)
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