Are there inexpensive small battery operated sensors that record and/or comunicate the internal conditions of a package, without opening them?
Some sensors would be in use for 12 mo. They would need to survive exposure to a chlorinated organic solid at ambient temperature. Data collected: relative humidity and temperature. One device preferred
Individual poling by ID would be nice but is not necessary if the transmission range is short.
Sensors would be placed in the middle of a 30 gallon fibre drum filled with the solids.
Some sensors would be in use for 12 mo. They would need to survive exposure to a chlorinated organic solid at ambient temperature. Data collected: relative humidity and temperature. One device preferred
Individual poling by ID would be nice but is not necessary if the transmission range is short.
Sensors would be placed in the middle of a 30 gallon fibre drum filled with the solids.
