The air purge collar is used to keep dust, fumes, moisture, and other contaminants away from the lens of the infrared temperature sensor. It must be screwed in fully. Air flows into the 1/8” BSP fitting and out of the front aperture. Air flow should be no more than 5 to 15 litres/min. Clean or ‘instrument’ air is recommended.
Supports the following Calex series sensors: PyroCouple, PyroEpsilon, PyroBus, PyroCAN, PyroMini, PyroMiniUSB, PyroMiniBus
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| Model | Description |
| APSW | For use with Calex Compact series sensors with 2:1 Optics |
| APSN | For use with Calex Compact series sensors with15:1, 20:1, 30:1 and close-focus sensors |