Two methods were used to monitor water vapor passage through the specimens: chilled mirror
hygrometer and mass loss.
To respond to these new requirements, Yamatake has developed the FDW20 low dew point version of the FINEDEW chilled mirror
hygrometer, which offers an expanded measurement range.
There are a number of potential solutions, but before you try one, I'd recommend that you buy an inexpensive
hygrometer (see photo) to monitor your indoor relative humidity.
GE Panametrics have developed the PM880 hand-held portable
hygrometer. It introduces a versatile and accurate means of moisture measurement in industrial gas or hydrocarbon liquid applications.
All data that is measured by the inbuilt barometer,
hygrometer and thermometer can be viewed in real-time and used to refine official forecasts locally or predict wind or local storms.
In line with our article on soldier communications found in this issue, one further piece of equipment, one very important piece--that combines altimeter, barometer, thermometer, anemometer and
hygrometer into one very small unit--is worthy of note.
According to the company, the Protimeter allows users to switch between moisture meter and
hygrometer modes of operation, improving their understanding of the extent and nature of dampness-related problems in buildings.
Michell Instruments has launched a new, easy to use
hygrometer for use in the natural gas industry.
The reliable, old-fashioned, hand-operated sling psychrometer costs about $100 (the lazy-person's unit with a battery-operated fan costs about $50 more), and the newest type of device, the digital pen-style pocket
hygrometer, costs about $50.