hygrometer

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hygrometer

 [hi-grom´ĕ-ter]
an instrument for measuring atmospheric moisture.

hy·grom·e·ter

(hī-grom'ĕ-tĕr),
Any device for measuring the water vapor in the atmosphere, usually indicating relative humidity directly.
[hygro- + G. metron, measure]
References in periodicals archive ?
The soil moisture monitor by using ultrasonic sensors, it has more advantage compared to other soil moisture sensors. It was designed to monitor the 75% of water level in the crop field, when it goes below then automatically pump the water else automatically off the pump.
For large and/or inaccessible regions, moisture sensors with long-term reliability, and small enough to minimize intrusion are needed for continuous monitoring.
Photo: Moisture sensors include one portable, manual and automatic versions of one type, and two electronic kinds
When it comes to just moisture sensors, there are two main categories: those that measure the water content of soil and those that measure water tension or how easy it is for roots to take up moisture.
Over the past several years, University of Florida (UF) staff and students have been conducting research on automatic irrigation control systems using soil moisture sensors (SMS) on landscape and drip irrigated vegetables as well as controllers using climate data to estimate plant evapotranspiration (ET) for landscape irrigation scheduling.
The new MS150 moisture sensor incorporates a flow-through sensor cell, which is installed directly in the flow stream to produce an extremely accurate reading that shows the real time percentage of moisture present in the operating fluid; this includes petroleum and synthetic based hydraulic and lubricating oils.
sensors, the soil moisture sensor of Koubachi is not affected by the salinity of the soil, which for example increases when fertilizer is added.
Soil moisture sensors are a useful tool for assisting with vineyard irrigation scheduling.
The commercially available soil moisture sensors connect to conventional irrigation system time clocks.
All Michell's Impedance instruments use the Advanced Ceramic Moisture Sensor. Backed by over thirty years' experience in humidity measurement, Michell's latest generation impedance dew-point sensor combines fast response and high repeatability with long-term stability and resistance to contamination.
They recommend that clients use an automatic moisture sensor to determine when lawns need watering and the installation of a rain shut-off device to override the sprinkler system when it begins to rain.
"I've modified one moisture sensor to determine how much water remains in a 10,000-gallon storage tank by measuring how much moisture climbs up a wick suspended in the tank," he says.