Three-level humidity indicator for large storage and missile containers: 20 and 40% RH read at +15 to +25°C; 60% RH read at +5 to +15°C. Black anodised aluminium alloy, compatible with the AD302 panel bush and HUMS devices using Arcadia holders.
Description
The AD320 is designed for large storage and missile container applications, providing clear humidity indication when containers are stacked in warehouses or missile silo facilities. Its three levels of humidity indication — 20, 40 and 60% RH — allow desiccant adsorption to be monitored during storage or field use, so that the desiccant can be changed at the optimum point.
The 20% and 40% RH levels are read at +15 to +25°C, while the 60% RH level is read at +5 to +15°C. This temperature-dependent indication helps avoid false readings of the conditions inside the container in cold environments.
The AD320 Humidity Indicator is specifically used on containers requiring a Health & Usage Monitoring System (HUMS) device. Arcadia has worked with prime Defence Contractors to develop holders for fitting a HUMS device into the rear of the AD320. With the AD302 Panel Bush, the AD320 and mounted HUMS device can be removed without opening the container, allowing the data to be interrogated quickly and easily.
Please also view Arcadia’s own Electronic Humidity Sensing Device, now available.
The AD320 is compatible with NEMA 1, 2, 3, 3R, 3S, 4, 5, 6, 12, 12K and 13 enclosures, as well as IP66 and IP67 rated enclosures. It may also be suitable for other NEMA or IP-rated enclosures depending on the specific application.
Further information
| Head Diameter | 46mm |
|---|---|
| Overall Depth | 26mm (thread depth 14mm) |
| Indicator levels | 20, 40 & 60% RH |
| Humidity Indication Temperatures | 20% and 40% RH: +15 to +25°C; 60% RH: +5 to +15°C |
| Weight | 47 grams |
| Mounting Thread | 1-7/16–18 UNEF |
| Alternative Mounting | Can be used with AD302 Panel Bush |
| Material | Aluminium Alloy |
| Finish | Black Anodised |
| Internal Thread compatibility | Compatible for fitting I-Button & Madgetech HUMS devices with Arcadia Holders |
| Enclosure compatibility | NEMA 1, 2, 3, 3R, 3S, 4, 5, 6, 12, 12K and 13; IP66 and IP67 |
| NATO Stock Number | 6685-99-721-9482 |
| Associated Part Numbers to NSN | 804122900, A34087, BLD7941 |
Drawings available on request.
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