Gill Instruments

WindObserver 90

ClimateMeteorological Station & Sensors

Gill WindObserver 90 – Engineered for Extreme Winds, Trusted for Ultimate Precision

High-range wind sensor for hurricanes
Wind sensor for aviation and defense
Marine and coastal wind sensor

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Overview

The Gill WindObserver 90 is a professional-grade ultrasonic wind sensor designed to deliver accurate and reliable wind measurements even under the most extreme conditions. With a wide measuring range of up to 90 m/s, it captures both wind speed and direction without using any moving parts, ensuring long-term durability and zero mechanical wear. Built from 316 stainless steel and rated to IP66, it withstands corrosion, dust, and water exposure, making it ideal for harsh marine, aviation, and industrial environments. The sensor offers multiple output options, including RS422 and RS485, and can be equipped with a heating system to prevent icing in cold climates. Combining rugged construction, fast response, and high precision, the WindObserver 90 provides dependable performance wherever accurate wind monitoring is essential.

Key Features

Heating power 7A @ 24VAC or DC (1W/cm²)
0-90m/s wind speed range
Calibrated in Merlin Wind Tunnel
Calibration traceable to standards
IP66 rated stainless steel housing
Connector or cable exit options
Optional customer base mounts
Averaging/gusts to WMO guidelines

Specifications


WIND SPEED
Range	0 - 90 m/s (0-201mph)
Accuracy	±2% @ 12 m/s, ±4% @ 90 m/s
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
Resolution	1°

MEASUREMENT
Ultrasonic output rate	1 - 4Hz
Parameters	UV, Polar, NMEA
Units	m/s, knots, mph, km/h, ft/min
Averaging	Flexible 1-3600 seconds
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