dew-point hygrometer

dew-point hygrometer

[′dü ‚pȯint hī′gräm·əd·ər]
(chemical engineering)
An instrument for determining the dew point by measuring the temperature at which vapor being cooled in a silver vessel begins to condense. Also known as cold-spot hygrometer.
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MICHELL Instruments has introduced a new S8000 RS high-precision dew-point hygrometer that enables furnace operators to achieve high standards of finishes and quality of metal products at lower annealing temperatures.
Other devices, such as a chilled mirror dew-point hygrometer, can also be used to establish the moisture content of an air stream.
The two most significant deterrents to using an aspirated psychrometer are the reduced accuracy and repeatability of the measurements in comparison to other, more expensive devices (e.g., the chilled mirror dew-point hygrometer).
A small vacuum pump is used to draw a small sample of air from the test section of the duct and across the chilled mirror dew-point hygrometer sensor, where the dew-point temperature is measured.
Wet-bulb temperature measurements were taken with the wet-bulb temperature sensor ("measured" wet-bulb temperature) over the entire range of test conditions and compared to the "true" wet-bulb temperature and adiabatic saturation temperature measurements, determined from the chilled mirror dew-point hygrometer.
Michell Instruments' MDM300 advanced dew-point hygrometer can save engineers weeks of waiting time each year.
The findings were verified by a dew-point hygrometer analysis performed on samples extracted from the cases.
The sampling tubes were connected to a dew-point hygrometer via an air-sampling pump.
Included on the stand will be Michell's smallest and fastest portable dew-point hygrometer, the MDM300.
Their range of dew-point hygrometers are used for a variety of compressed air applications around the world, including compressed air systems, desiccant and rotary wheel dryers, fluid beds, refrigerant membranes and silica gel.The current product range includes dew-point transmitters, chilled mirror hygrometers and portable instruments as well as humidity calibration equipment.
Humidity calibration systems and reference dew-point hygrometers enable customers to carry out the calibration of portable hygrometers and relative humidity instruments in-house - therefore saving on downtime.
Michell Instruments, leaders in the field of moisture and humidity analysis, testing and control says its range of dew-point hygrometers are used for a range of compressed air applications around the world, including compressed air systems, dessicant and rotary wheel dryers, fluid beds, refrigerant membranes and silica gel.