Gill Instruments

WindObserver 75

ClimateMeteorological Station & Sensors

Gill WindObserver 75 – Extreme Accuracy, Built to Withstand Extreme Winds

High-speed wind measurement up to 75 m/s
WindObserver 75 RS422 output and configuration
Ultrasonic wind sensor for AWOS or MET systems

Quantity

Overview

The Gill WindObserver 75 is a high-range ultrasonic wind sensor designed for precise measurement of wind speed and direction in extreme environments. Built from durable stainless steel and rated IP66, it operates reliably in harsh conditions such as offshore, aviation, and industrial sites. The sensor can measure wind speeds up to 75 m/s with full 360° directional coverage, providing accurate and maintenance-free performance thanks to its solid-state, no-moving-parts design. It supports multiple digital outputs, including RS422 and RS485, for easy integration with monitoring systems. With optional heating for cold or icy environments, the WindObserver 75 delivers dependable data and long-term durability for professional meteorological and environmental applications.

Key Features

Heating power 7A @ 24VAC or DC (1W/cm²)
0-75m/s wind speed range
0-360º wind direction range (no dead band)
Wind speed accuracy for turbine control ±1% within ±25º of datum
Calibration traceable to national standards
IP66 rated stainless steel construction
Optional base mounts/cable exit
Averaging/gusts to WMO guidelines

Typical Applications

Building controls/structural safety
High altitude mountainous regions
Arctic/Antarctic Weather monitoring
Marine vessels dynamic positioning systems
Wind turbine control
Road & rail tunnels/transport safety
Ports & Harbours
Aircraft landing systems

Specifications


WIND SPEED
Range	0 - 75 m/s (0-168mph)
Accuracy	±2% @12 m/s (1% for turbine control)
Resolution	0.01 m/s
Starting Threshold	0.01 m/s
Offset	0.01 m/s

DIRECTION
Range	0 - 360°
Dead band direction	None
Accuracy	±2° @12 m/s (1˚ for turbine control)
Resolution	1°

MEASUREMENT
Ultrasonic output rate	1 - 4Hz
Parameters	UV, Polar, NMEA
Units	m/s, knots, mph, km/h, ft/min
Average (Selectable)	Rolling average - 1, 2, 10 m.n, Gust - 3s
Block average	0-3600s

DIGITAL OUTPUT
Communication	RS422/RS485 full duplex/half duplex
Baud rates	1200, 2400, 4800, 9600, 19200, 38400
Formats	8-bit data; odd, even or no parity
Anemometer status	Supplied as part of standard message

MECHANICAL
External Construction	Stainless steel 316
Size	Refer to diagram overleaf
Weight	1.7kg (with 2m cable) 1.3kg (with connector)

ENVIRONMENTAL
Protection Class	IP66 (NEMA4X)
Humidity	0% to 100% RH
Operating Temperature	-55°C to +70°C (Heated option)
Precipitation	300mm/hr
EMC	EN 61326-1: 2013, EN60945:2002
Icing	MILSTD810F Method 521.2 Procedure I