Major airports and automated weather observing systems need a complete weather picture they can accept into operations quickly. This top-of-range VPF sensor combines wide-range visibility measurement with integrated precipitation and temperature/humidity sensing, so you can report current and recent weather from a single instrument.
Forward scatter optics report Meteorological Optical Range (MOR) and Extinction Coefficient (EXCO) from 10 m to 99.99 km, with calibration in accordance with ICAO 9328 and traceability to a national weather service transmissometer. A backscatter receiver adds stronger precipitation classification, and in combination with the heated precipitation sensor and temperature input it supports identification of freezing precipitation types.
Long deployments are supported by a rugged hard coat anodised aluminium enclosure, automatic window contamination monitoring with compensation and two-stage cleaning warnings, plus functional test mode for integration and commissioning. ASCII messages are available over RS-232 or RS-422/RS-485 at user-selectable intervals or on request, with an optional ALS-2 interface appending ambient light data directly to the output.
Outputs visibility plus WMO Table 4680 and METAR codes, significant past weather, and precipitation amount.
Uses forward scatter optics with an additional backscatter receiver for precipitation discrimination using signal ratio.
Includes an external integrated precipitation sensor to support discrimination between liquid and different frozen precipitation types.
Uses a Pt 100 air temperature sensor (-30°C to +70°C) and capacitive humidity sensing (0 - 100% RH).
Transmits ASCII messages via RS-232 or RS-422/RS-485 at user-selectable intervals or on request.
Supports an optional ALS-2 interface that appends ambient light data directly to the output.
Provides continuous self-test and a functional test mode to simulate visibility, weather, contamination and fault conditions.
Includes automatic window contamination monitoring on all sensor windows and window heaters as standard, with optional hood heaters.
Code: 75. [1] [2] [3] [4] T. [5] [6] [7] [8]
Example: 75.024.NH.D.A.T.WA.06.UK.RC
[1] Power Supply 24 Vdc
024. = Power Supply 24 Vdc
[2] Hood Heating
NH. = Without heating
HV. = With heating
[3] Data Output
D. = RS232 Serial Output
E. = RS422/RS485 Serial Output
[4] Advanced Self-Test and Monitoring
A.
[5] Ambient Light Sensor Interface (ALS-2)
NA. = Without ALS-2 Interface
WA. = With ALS-2 Interface
[6] Cable Length
06. = 6 m power and data cables with connectors
XX. = Alternative total cable length (1) in m
[7] Precipitation definitions
XX. = country code
The list of Country Codes is available on the website and must be included in the order code. For further information, please contact your sales representative.
[8] Configuration
RC = Regular configuration
SC = Special configuration
