Summary
Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | 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. Sensor-Info: aircraft:bt-67:cr-2, 6622 |
Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | Metadata |
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Manufacturer | Buck Research Instruments LL.C. |
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Model | CR-2 |
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Serial No. | n/a |
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Type | humidity sensor |
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Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | Images |
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Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | Contacts |
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Available devices and Specifications
Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | Subdevices |
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Name | Model | Serial Number |
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Cryogenic Aircraft Hygrometer | CR-2 | 210M | Cryogenic Aircraft Hygrometer | CR-2 | 218M |
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Specifications of CR-2 (without mounting)
Metadata list |
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|| Dimension (L x W x H)| 250 x 270 x 95 mm ||
|| Weight | 3.2 kg||
|| Power Supply| 28 VDC ||
|| Data interface | serial interface (RS-232)|| |
Position
Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | LocalFrame |
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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. |
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Data logging, storage and archiving
Logged parameter
Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | Parameters |
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Parameter | Sensor Output Type | Unit |
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Coldfinger Temperature | temperature | °C | Mirror Temperature | temperature | °C | Pressure | pressure | mbar | Water content | volumetric water content | ppmV |
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Rawdata storage on board
Metadata (Metadata Plugin) |
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During flight CR-2 data are stored within the aircraft onboard DMS system. |
Data archiving on land
Metadata (Metadata Plugin) |
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After the flight CR-2 data are accessible via the land system of the aircraft data managment system (DMS). |
DMS
Metadata list |
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|| Module name| B722 CR2 Hygrometer||
|| Device name | Hygrometer CR-2||
|| Parameters | Balance; Board Temperature \[°C\]; CR2 ASCII; Coldfinger Temperature \[°C\]; Date; ErrorText; Mirror Flag; Mirror Temperature \[°C\]; Mixing Ratio \[ppmv\]; PWM TEC; Pressure \[mbar\]; Status; Status Flag; Time || |
Documentation
Sensorweb integration |
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urn | aircraft:bt-67:cr-2 |
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contenttype | Resources |
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Also see https://sensor.awi.de/ for calibration certificates of the sensors.