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Two models of Nevzorov Probes exist (CWCMB2 and CWCMU4) which operate after the same principle. Each system consists of a control box and a sensor head. Operation of the Nevzorov probes requires experienced staff on board the aircraftThe differential pressure transducer setra 239 with a pressure range of 0-30 INWC (inch water column) is permantly installed in both aircraft as part of the Basic Meteorology module. Additionally, the pressure transducer setra 239 with a pressure range of +/- 7.5 INWC is installed in nose booms used for turbulence measurements. |
Summary
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| urn | aircraft:bt-67:nev |
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| contenttype | Summary |
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The setra 239 model is used for measuring differential pressure for the basic meteorology at the nose of the aircraf. Additionally, it is used with the Turbulence Noseboom where setra239 transducers are connected to a 5-whole probe. The Model 239 is a transducer designed for extremely low pressure ranges (+/- 2.7 inch WC) and a wide temperature range (-18 to +80°C)Sky Tech Nevzorov-probe is an aircraft probe designed for measurements of liquid and total (ice plus liquid) water content (LWC and TWC) of clouds and fogs in the range of 0.003 g/m3 to 3 g/m3. The Nevzorov-probe belongs to the group of so-called "hot wire constant temperature probes". A sensor unit consists of two sensors: collector and reference. The principle of operation is based on separate measurements of power needed to compensate heat losses caused by evaporation of cloud water and convective losses on the collector sensor and power needed to compensate convective heat losses on a reference sensor. Liquid and total water content are measured by separate LWC and TWC sensors, mounted on the same sensor vane. |
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| urn | aircraft:bt-67:nev |
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| contenttype | Metadata |
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setra| SkyTech Research Limited | | Model |
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239| CWCMB2 and CWCMU4 | | Serial No. | n/a |
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| Type |
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pressure sensor |
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| urn | aircraft:bt-67:nev |
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| contenttype | Images |
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No images available. Image Added  Image Added  Image Added |
Contacts
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| urn | aircraft:bt-67:nev |
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| contenttype | Contacts |
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| Name | Institution | RoleNo contacts available.
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Available devices and Specifications
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| urn | aircraft:bt-67:nev |
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| contenttype | Subdevices |
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| Type | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (0-30 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | | Differential pressure transducer | 239 (+/- 7,5 INWC) | pressure sensor | |
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Specifications of Nevzorov Probe (without mounting)
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|| Dimension (L x W x H)| 83 x 50 x 79 mm ||
|| Weight | 0.3 kg||
|| Power Supply| 22 - 30 VDC ||
|| Data interface | analog (V)|| |
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Position
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| urn | aircraft:bt-67:nev |
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| contenttype | LocalFrame |
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| Info | The sensor head of the Nevzorov Probe is |
Origin Description: | Setra 239 differential pressure transducer are pylon | compartment of the aircraft |
for the basic meteorology module as well as in the turbulence nose boom used for turbulence measurements.| . The electronic control unit is installed in a rack in the aircraft cabin. | | X | 0.0 none
(no description given) | | Y | 0.0 none
(no description given) | | Z | 0.0 none
(no description given) |
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Data logging, storage and archiving
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| urn | aircraft:bt-67:nev |
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| contenttype | Parameters |
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Sensor | O2ARegistry Output Type | Unit |
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differential pressure | pressure | |
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| liquid water content | water content | g/cm3 | | ice + liquid (total) water content | water content | g/cm3 |
V |
Rawdata storage on board
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| During flight setra 239 data are stored within the aircraft onboard DMS system. |
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Data archiving on land
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| After the flight setra 239 data are accessible via the land system of the aircraft data managment system (
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DMS
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DMS
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|| Module name| B712 Basic Meteorology, B719 Turbulence Noseboom 1, B851 Turbulence Noseboom 2||
|| Device name | Static Pressure Slow||
|| Parameters | ErrorText; Static Pressure Slow; Status ||
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Documentation
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| urn | aircraft:bt-67:nev |
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| contenttype | Resources |
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| setra Web site (Web site)
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Also see https://sensor.awi.de/ for calibration certificates of the sensors.