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Thermalert
®
4.0 Series
Users Manual, Rev. 2.4, Jul 2021
100
13.2.9 Air Purge (A-AP)
The air purge is used to keep dust, moisture, airborne particles, and vapors away from the lens. It can be mounted
before or after the bracket. It must be screwed in fully. Air flows into the 1/8” NPT fitting and out the front aperture.
Airflow should be a maximum of 0.5 to 1.5 l/s (0.13 to 0.4 gallons/s). 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 13-22: Air Purge
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Содержание Thermalert 4.0 Series
Страница 131: ...Thermalert 4 0 Series Users Manual Rev 2 4 Jul 2021 132 www com information itm com 1 800 561 8187...
Страница 133: ...Thermalert 4 0 Series Users Manual Rev 2 4 Jul 2021 134 www com information itm com 1 800 561 8187...
Страница 134: ...Appendix IECEx Certificate of Conformity 135 15 www com information itm com 1 800 561 8187...
Страница 135: ...Thermalert 4 0 Series Users Manual Rev 2 4 Jul 2021 136 www com information itm com 1 800 561 8187...