GILL INSTRUMENTS: TRUSTED GLOBALLY IN METEOROLOGICAL SENSING
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When your automatic weather station gives you unreliable readings, everything downstream suffers: wrong decisions, failed audits, missed alerts. The instrument at the centre of your weather station needs to be right first time and stay right.
An automatic weather station can measure everything you need from one setup and send the data back without anyone on site. Wind. Temperature. Humidity. Pressure. Precipitation. Solar radiation. All very tidy, and all captured from a single installation in places that are often awkward, remote or unforgiving.
Which is exactly why the instrument inside matters so much. Because if the core sensor is not up to the job, the rest is just a tidy housing around a future problem. And these stations do not live easy lives. They are out on offshore platforms, up mountain passes, across remote farmland, and mounted on wind turbines where no one wants a maintenance headache. In those environments, a mechanical sensor is not just old fashioned. It is a weak link waiting for its moment.
Cups freeze. Bearings wear. Vanes seize. Worse still, mechanical sensors do not always fail properly. They just drift into being wrong. Quietly. Which means the danger is not only downtime. It is false confidence.
Ultrasonic measurement means no moving parts, so there is nothing to inspect, replace or recalibrate. Fewer site visits. Less maintenance drag. More confidence in the data coming back.
Wind, pressure, temperature, humidity, precipitation and solar radiation, all delivered as a single clean data output in the protocol your system already expects. No patchwork. No unnecessary faff.
IP66 and IP68 rated. Heated variants down to -40°C. ATEX and IECEx certified for hazardous areas. Stainless steel options for marine environments. This is hardware built for real-world punishment, not lab-bench comfort.
RS232, RS422, RS485, SDI-12, MODBUS and NMEA outputs. Connects with existing data loggers, SCADA platforms and telemetry systems without turning integration into an engineering project.
Conventional cup anemometers depend on bearings, mechanical components and regular calibration checks. In cold or exposed environments, cups ice over, bearings wear and vanes seize. The sensor does not announce that it is failing. It just returns values that drift further from reality over time, and the data logger dutifully records every one of them.
Gill's ultrasonic technology removes that weak link altogether. No cups. No vanes. No moving parts. No mechanical wear. Just precise acoustic measurement designed to keep delivering dependable data in harsh environments, year after year.
Both are built on 40 years of ultrasonic measurement experience. Both are trusted in automatic weather stations around the world. The difference is not in the quality. It is in the configuration your installation calls for.
A complete multi-parameter weather station in a single compact unit. Wind, temperature, humidity, pressure, precipitation, solar radiation and more, all from one low-maintenance installation. MaxiMet Marine adds a 6-axis compass, GPS and IP68 rating for accurate wind data on moving platforms.
A modular, expandable weather station built to support WMO siting recommendations. Suited to national met service networks, research stations and applications where a configurable, professional-grade installation designed for a long service life is the requirement.
The specification for applications where measurement accuracy and sensor integrity are non-negotiable. 316 stainless steel, Lloyds Register approved, operating from −30°C to +70°C with a heated option. When a reading cannot be completed in extreme conditions, WindObserver outputs a status code rather than a corrupted value.
Gill's smallest and most rugged anemometer. Designed for applications where space, weight and survivability are constraints. Tested to IP69k including pressurised wash-down, shock and vibration. Full 0–75 m/s measurement range in a form factor built for demanding installations.
When the priority is cost-effective, fit-and-forget reliability across a monitoring network, WindSonic is the sensor that has earned its place. Compact, lightweight, WMO-compliant for gust measurement, no scheduled maintenance. UK CAA and FAA accepted as part of an automatic weather observing system.
National met services and research institutions cannot afford a station that quietly drifts out of calibration. MetConnect is built to support WMO siting recommendations, while MaxiMet suits networks where compact, reliable nodes still need to pull serious weight.
You cannot keep sending people up turbine towers to check whether a sensor is still behaving itself. Wind farm operators and solar developers choose Gill because ultrasonic measurement does not degrade through moving-part wear, and maintenance stays low.
Salt. Spray. Motion. Corrosion. The sea has a talent for exposing weak equipment early. MaxiMet Marine models are rated to IP68, with GPS and a 6-axis compass supporting accurate wind data on moving platforms, and materials chosen to cope with harsh marine conditions.
Transport and infrastructure depend on meteorological data for safety-critical and economic decisions. Road maintenance teams rely on it. Bridge and runway operators do too. A false alert wastes time and money. A missed alert can cost far more. Gill instruments provide real-time data where getting it wrong is not a recoverable situation.
Hazardous area monitoring, chemical dispersal risk assessment, heat stress measurement for outdoor workers, and tactical weather for military operations all rely on dependable measurement. ATEX and IECEx certified options are available for applications where reliability is essential.
Urban heat island monitoring, precision irrigation and smart building management all need accurate data with minimal power demand. MaxiMet's low-power Eco Mode makes solar and battery-powered deployment practical, without compromising measurement quality between site visits.
Gill is not a systems integrator, and we do not supply complete weather station installations. What we do supply is the precision instrument at the core, the part that determines whether the data coming out is dependable or dubious.
Share the application details with us: site conditions, parameters required, siting constraints, output format, power budget and any environmental certification needs. From there, we will guide you to the right instrument, whether that is MaxiMet, MetConnect, WindSonic or WindObserver, along with the correct options and practical integration support.
The result is a better-performing station built on stronger measurement. That means free configuration software, full documentation and direct support from our UK engineering team when you need it.
Discuss your applicationFree configuration software included
Full documentation and direct support from our UK engineering team. Not a ticketing queue. Actual engineers who know the products.
Use this as a starting point. For specific site conditions, installation constraints or power budget requirements, contact Gill directly.
| Requirement | Recommended instrument | Type |
|---|---|---|
| Complete weather station, compact and easy to deploy | MaxiMet (all-in-one, IP66/68, multiple outputs) | Standard |
| Complete weather station, WMO-compliant network deployment | MetConnect (modular, expandable, professional-grade) | Standard |
| Weather station for marine or moving platform | MaxiMet Marine GMX260/GMX560 (IP68, 6-axis compass, GPS) | Standard |
| Wind sensor for harsh or safety-critical application | WindObserver (316 stainless steel, Lloyds Register, NMEA) | Standard |
| Wind sensor for general monitoring network | WindSonic (compact, WMO-compliant, CAA/FAA accepted) | Standard |
| Wind sensor, space-constrained or unmanned platform | WindUltra (IP69k, Gill's smallest anemometer) | Standard |
| Wind sensor for hazardous area (ATEX / IECEx site) | WindObserver IS (IECEx, ATEX, UKEX certified) | Approved |
| Solar or battery-powered remote station | MaxiMet with Eco Mode (minimises power draw between readings) | Standard |
| Add wind measurement to an existing data logger or station | WindSonic or WindObserver standalone (NMEA / RS485 / SDI-12) | Standard |
MaxiMet is a self-contained all-in-one weather station. Everything you need, wind, temperature, humidity, pressure, precipitation and solar radiation, is built into a single compact unit. It is designed for straightforward deployment: mount it, connect it, configure it. That makes it the right choice when ease of installation and low maintenance are the priority, whether the application is renewable energy, transport infrastructure, marine or remote monitoring.
MetConnect is a modular platform intended for professional networks and larger installations. It supports WMO siting recommendations, accommodates a wider range of sensor configurations and is designed to be expanded over time. National met services, research institutions and network operators typically specify MetConnect when the installation needs to evolve or when WMO compliance is a requirement from the outset.
The honest answer is maintenance. Cup anemometers have bearings that wear, vanes that seize and cups that ice over. In demanding or remote environments, these are not theoretical failure modes. They are the most common source of data quality problems in automatic weather station networks.
Gill's ultrasonic sensors have no moving parts. There is nothing to wear, nothing to ice over and nothing to replace on a schedule. For a station that has to keep producing reliable data between site visits, and especially for one in a remote or difficult location, that is a significant operational advantage. The measurement principle also responds faster to gusts and does not underestimate wind speed at low velocities the way cup anemometers can.
Yes, and in most cases without any custom engineering. Gill sensors support RS232, RS422, RS485, SDI-12, MODBUS and NMEA outputs as standard. That covers the majority of data loggers, SCADA platforms and telemetry systems in use across met networks, renewable energy sites and industrial monitoring applications.
Free configuration software is provided with Gill instruments, allowing output format, update rate and protocol to be set before deployment. If your system requires a non-standard output or a specific message format, contact Gill at the specification stage rather than after the hardware has been delivered.
Yes. WindObserver IS is available in intrinsically safe variants certified to IECEx, ATEX and UKEX for installation in explosive atmospheres. This covers industrial safety monitoring, chemical processing sites, offshore platforms and any application where hazardous area classification applies to the instrument location.
MaxiMet also has ATEX and IECEx certified variants for complete weather station deployment in hazardous areas. If you have a specific zone classification or area group requirement, confirm it with Gill before specifying. The approvals already held cover the most common classifications, but it is worth verifying against your site documentation.
A standard anemometer measures wind relative to the sensor. On a static mast that is sufficient. On a vessel that is pitching, rolling, turning and moving through the water, relative wind is not the same as true wind, and the difference matters for navigation, safety and any application where the data drives a decision.
MaxiMet Marine uses a 6-axis compass to measure pitch, roll and heading on every reading, then combines that with GPS speed and course over ground to compute true wind automatically. No additional processing. No separate correction software. The corrected true wind value is what comes out of the output. It is the reason MaxiMet Marine exists as a separate product from the standard MaxiMet.
For the wind measurement component, none from normal operation. No moving parts means no mechanical wear, no recalibration triggered by bearing or cup degradation, and no consumables to replace. That is by design, not coincidence. Gill instruments are specified precisely because they can be left in service in remote or difficult locations without routine visits.
For other sensors in a weather station setup, temperature, humidity and pressure sensors are sealed units with long service intervals. The specific maintenance requirements for each parameter sensor are covered in the product documentation and support materials provided with every instrument.
Yes. Share the application details: site type, location, parameters required, siting constraints, output format, power budget, and any environmental or certification requirements. From that, Gill can recommend the correct instrument or combination of instruments, the appropriate output configuration, and any options relevant to the site conditions.
Gill does not supply full weather station installations, but provides the precision measurement instruments at the core of the system alongside free configuration software, full documentation and direct support from the UK engineering team. For most projects, that is the part where the technical risk sits, and it is the part Gill has been doing for over 40 years.
Building ultrasonic wind instruments in the UK since 1984. Not a company that added ultrasonic sensors to a catalogue. A company that has been doing one thing for four decades and doing it well.
When the data has to be right, and there is no one on site to fix a problem, met services in 73 countries choose Gill. That trust has been earned over decades, not asserted in a brochure.
Ultrasonic measurement removes the weak link from the weather station. No cups. No bearings. No recalibration on a schedule. The instrument keeps measuring accurately after cheaper alternatives have been swapped out.
IP66 and IP68 rated. Heated variants to −40°C. ATEX and IECEx certified. Stainless steel marine options. Designed for offshore platforms, mountain passes, turbine towers and remote farmland. Not for lab benches.
RS232, RS422, RS485, SDI-12, MODBUS and NMEA as standard. Integrates with existing data loggers, SCADA platforms and telemetry systems without turning integration into an engineering project.
All Gill instruments are designed and built in Lymington, Hampshire. King's Award for Enterprise in International Trade. Free configuration software, full documentation and direct access to our UK engineering team when you need it.
Site conditions, parameters required, output format, power budget and any certification needs. The more specific you are, the faster we can confirm the right specification.