Humidity indicator cards and plugs provide external monitoring of humidity levels inside containers.
Humidity Indicator Cards provide external monitoring of humidity levels inside containers and packages.
Humidity Indicator Plugs are designed for mounting on reusable or long-term storage containers or in any other humidity-controlled enclosure to detect changes in the relative humidity of the space being monitored.
A humidity monitoring plug is installed on the outside of a sealed container or package. The rear of the plug, which holds a humidity indicator card in its head, remains inside the enclosure and is exposed to the environment within. The indicator on the plug that is located on the outside of the enclosure allows for visible monitoring of humidity without the need to open the container or package.
Humidity indicators enable quick, easy visual inspection of the humidity level of an enclosed environment from the outside.
The ability to make determinations about desiccant change-outs or inspecting cargo without opening that environment saves time and avoids causing a mass influx of water vapor and debris into the environment.
Humidity indicators have applications across a wide range of industries. Some examples include:
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Follow these simple steps to replace your humidity indicator card inside the plug:
All of our humidity indicator plug designs will withstand 10 psig in either direction while our TA284 series is guaranteed to 500 psig outward for high-pressure applications.
Most units are rated to 10 psig in the pressure relief direction. This means the higher pressure is behind the window trying to push the window out of the container. The few vacuum direction tests we have run have shown that the TA356 series at least will also hold 10 psig in the vacuum relief direction.
Both the flange and the mounting nut are 1-3/8” hex shapes. So any suitable hand tool that is capable of engaging a 1-3/8” hex will work. We recommend tightening the mounting nut to 30-40 in-lbs.
We recommend 30-40 in-lbs for all humidity indicators we offer that are made of metal except for the TA28X series, which utilize an NPT thread form. For the TA28X series, a higher torque might be required. For the TA380 series (made of SAN plastic), we recommend 5-8 in-lbs, or just finger tight.
We carry a variety of humidity indicators to help you monitor humidity levels in different sealed environments.
AGM Container Controls, Inc.
3526 E. Fort Lowell Rd.
Tucson, AZ 85716
520.881.2130
agmwebsales@agmcontainer.com