Visibility Sensor The SWS-100 is optimised for use in applications where accurate and reliable visibility measurements are required with the addition of fundamental WMO 4680 precipitation codes. The forward scatter design allows the sensor to be compact whilst the inclusion of serial, analogue and relay outputs make the sensor easy to interface to almost any system. The SWS-100 is a versatile sensor suited to a very wide variety of applications across the globe. It is used by national weather services as part of synoptic monitoring networks due to its wide measurement range, reliability and measurement accuracy. In aviation the ICAO 9328 compliant design and seamless integration with the ALS-2 Ambient Light Sensor allow the SWS-100 to be used for both general visibility monitoring and as part of instrumented Runway Visual Range (RVR) systems. The SWS sensor family is designed to be easily installed by a single person and has an interface which simplifies system integration. Selftest features include window contamination monitoring which automatically corrects the output data and provides two stage warnings allowing maintenance to be performed most efficiently. Calibration checks and recalibration are simple and quickly accomplished in the field by a single person. Visibility and Precipitation Measurements Measurement range Visibility (MOR Meteorological Optical Range) Selectable measurement range up to 75km Hood heating for use in extreme environments Digital, analogue and switching relay outputs Comprehensive self-test and maintenance data 3 years warranty Measurement accuracy ≤ 4.5 % at 600 m ≤ 5.0 % at 1 500 m ≤ 5.1 % at 2 km ≤ 12.5 % at 15 km ≤ 20 % at 30 km Measurement principle Forward scatter meter with 39° to 51° angle, centred at 45° Switching relays (providing flexible configurations) Relay 1= Fault Relay 2 = visibility (user selectable value) Relay 3 = precipitation yes/ no or snow yes/no or visibility (user selectable) Selected WMO 4680 table codes Power Requirements Power supply Outputs and Reports Output rate (seconds) Digital (serial) outputs Analog outputs 9 to 36 VDC (AC with optional mains adaptor) Power consumption 24 V AC or DC (Hood heating power) 3.5 W (Basic sensor) 1.7 W (Window heaters) 24 W (Hood heaters) MicroStep-MIS, www.microstep-mis.com © 2016, All specifications subject to change

Visibility Sensor Options Window heaters Fitted as standard to both sensor head windows Window contamination monitoring Fitted as standard to the transmitter window. Optional on reciever Hood heaters Fitted as an option to both sensor head windows Environmental Operating temperature Operating humidity Protection rating Physical Material Powder paint coated aluminum Self-test capability User confidence check Window cleaning Automatic compensation and warnings Field calibration With optional calibration kit Power and data cables Mains power adaptor Calibration kit ALS-2 Ambient Light Sensor Hard...