Gill WindObserver 75 Wind Sensor 1390-75-B-313 – Used / Untested

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Item overview
This is a professional Gill ultrasonic wind sensor from the WindObserver family, built for demanding marine, industrial, and weather-monitoring use. Gill’s WindObserver range is designed with stainless-steel construction, solid-state ultrasonic sensing, and no moving parts, and the family is used in applications such as marine systems, dynamic positioning, airport weather systems, and harsh-environment monitoring. Gill product information also notes RS422/RS485 output options across the WindObserver range and robust IP66 environmental protection. These units are being sold used and untested, with condition varying from unit to unit. Some units have connector-style bases, while others have attached flying-lead cables, and some show stronger cosmetic or wiring-related wear than others.

Highlights
• Professional Gill ultrasonic wind sensor
• WindObserver family design
• Stainless-steel industrial construction
• No moving parts
• Suitable for marine, industrial, research, and weather applications
• Some units labeled 1390-75-B-313
• Multiple units available
• Condition and connection style vary
• Offered used and untested
• Rare niche equipment on the second-hand market

Technical details
• Brand: Gill Instruments Limited
• Product family: WindObserver ultrasonic anemometer line
• Construction: stainless steel
• Sensing type: ultrasonic wind sensor / anemometer
• Typical use cases: marine systems, dynamic positioning, airport weather systems, industrial monitoring, research
• Output family information: WindObserver documentation describes RS422/RS485 output options on applicable models
• Environmental protection: IP66 stated for the WindObserver range
• Configuration differences in the range may include connector base or cable gland with attached cable, plus different mount options depending on version.

Condition
Used and untested. Units vary in cosmetic condition, label readability, connector or cable style, and cable-end condition. Some units present very cleanly and look suitable for a premium listing, while others show more wear, oxidation, label wear, modified cable ends, or heavier handling marks. Sold as-is, with no guarantee of present-day function, calibration, or completeness beyond what is shown in the photos.

About the brand
Gill Instruments is a UK manufacturer known for ultrasonic wind sensors and related environmental measurement equipment. The WindObserver line is used in critical and harsh-environment applications, including marine and weather systems, and is built around solid-state sensing with no moving parts.

Unit-Specific Notes:

Unit 1
Price: 22,900 kr

Observed label details
• Part number: 1390-75-B-313
• Serial number: 1911032
• Gill Instruments Limited label visible
• “Hot surface” warning ring visible

Configuration observations
• Presents as a connector-base style unit
• Connector area visible
• No attached long flying cable shown in listing photos

Condition observations
• Clean overall presentation
• Arms and sensor heads appear complete
• Label readable
• Minor oxidation/discoloration visible around the lower ring/base area

Condition note
Used and untested. Clean overall example with readable label, intact sensor arms, and connector-style base. Minor cosmetic wear and some oxidation/discoloration around the lower ring/base area. Sold as-is without current functional testing.

Unit 2
Price: 23,900 kr

Observed label details
• Part number: 1390-75-B-313
• Serial number: 2006019
• Gill Instruments label visible
• “Hot surface” ring visible
• CE mark and crossed-out bin symbol visible

Configuration observations
• Presents as a connector-base style unit
• Connector pins visible
• No long attached cable shown

Condition observations
• Very good overall presentation
• Label readable
• Connector area looks clean
• Arms and sensor heads appear complete and straight
• Slightly cleaner and more uniform than Unit 1

Unit 3
Price: 16,900 kr

Observed label details
• Gill branding visible on worn label
• Earlier photos suggested same WindObserver 75 style, but this unit presents as a cable-attached version
• Full serial not clearly readable from the photos you sent for this one

Configuration observations
• Attached flying lead cable
• Exposed/stripped wire ends
• Cable remains attached to body

Condition observations
• Sensor body and arms appear complete
• More cosmetic wear than Units 1 and 2
• Label wear present
• Cable end looks handled and more uncertain for buyers
• Still a decent unit, but less premium

Unit 4
Price: 14,900 kr

Observed label details
• Label shows Model: 1390
• Serial number: 064301
• Older Gill Instruments label style
• CE mark visible

Configuration observations
• Attached long cable
• Cable gland / cable-attached base style
• Cable end appears heavily modified/taped

Condition observations
• Main body still decent
• Arms appear complete
• More uncertainty than the others
• Rougher cable termination and heavier cable handling
• Lower confidence listing compared with the cleaner units

Important note
This one is clearly a Gill 1390-series unit, but from the photos alone I would describe it more cautiously than the clearly labeled 1390-75-B-313 units.

Unit 5
Suggested asking price: NOK 22,900

Observed label details
• Part number: 1390-75-B-313
• Serial number: 1812007
• Gill Instruments Limited label visible
• Yellow service/test sticker visible
• “Hot surface” ring visible

Yellow sticker reads
• Testet! OK!
• NMEA (M5) OK
• Heating ON (H2) OK
• Blindern, 20.12.2018

Configuration observations
• Connector-base style unit
• Protective cap fitted over connector/base area

Condition observations
• Strong premium candidate
• Clear label
• Useful historical test sticker
• Arms appear complete
• Minor oxidation/discoloration around lower ring/base area
• Presents very well overall

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JYP 20260312 - Z70 (x4), C51 (x1)