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The absolute pressure transducer DPM7885 is permantly installed in both aircraft as part of the Basic Meteorology module. Additionally, the pressure transducer is installed in nose booms used for turbulence measurements. |
Summary
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A hygrometer is an instrument used to measure the amount of humidity and water vapour in the atmosphere, in soil, or in confined spaces. Modern electronic devices use temperature of condensation (called the dew point), or changes in electrical capacitance or resistance to measure humidity differences. The maximum amount of water vapor that can be held in a given volume of air (saturation) varies greatly by temperature; cold air can hold less mass of water per unit volume than hot air. Temperature can change humidity. Most instruments respond to (or are calibrated to read) relative humidity (RH), which is the amount of water relative to the maximum at a particular temperature expressed as percent.The DPM7885 measures absolute pressure from 30-1300mbar in the temperature range of -40 to +70°C with a resolution of 5Hz. |
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Contacts
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Available
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Devices and Specifications
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Type | Cryogenic Aircraft Hygrometer | CR-2 | humidity sensor | Cryogenic Aircraft Hygrometer | CR-2 | humidity sensor | |
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Specifications of DPM7885 (without mounting)
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Position
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Origin Description: | The CR-2 is installed in the cockpit behind the pilot seat. The air inlet is fastened to the mail door. |
Data logging, storage and archiving
Logged parameter
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Coldfinger Temperature | temperature | °C | Mirror Temperature | temperature | °C | Pressure | pressure | mbar | Water content | volumetric water content |
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Rawdata storage on board
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During flight CR-2 data are stored within the aircraft onboard DMS system. | ||
Data archiving on land
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| After the flight CR-2 data are accessible via the land system of the aircraft data managment system (DMS).||||
DMS
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Documentation
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