Specified in an afternoon.
Supported for twenty years.
Sensing engineered for defence on land, at sea and in the air: vehicles, deployable sites and perimeters; surface ships, machinery spaces and uncrewed craft; airframes, landing points, airfields and ranges. Compact, low-power sensing, no moving parts across core ranges, environmental protection and integration support for equipment built for long service lives.
Sustainment starts with the specification
Defence equipment is bought once and supported for decades. The purchase price is visible and scrutinised; the support burden is less visible, but it continues throughout the equipment’s service life.
A sensor with wearing parts introduces a spares requirement, maintenance task, training requirement and additional failure mode. Removing those mechanical failure points can reduce the maintenance and replacement burden, with the effect multiplied across a fleet and over years of service.
The specification therefore has to account for more than measurement accuracy. Environmental protection, power consumption, physical robustness, integration, maintainability and traceability all influence whether the instrument remains useful once deployed.
Gill’s sensing technologies are designed around these constraints, from solid-state wind and level measurement to non-contact position sensing, compact environmental monitoring, platform integration and independent calibration.
Why defence programmes specify Gill
Nothing in the measurement needs to wear
Ultrasonic wind measurement, capacitive level sensing and non-contact inductive position feedback. Removing mechanical wear points can reduce the maintenance and replacement burden across the life of a platform.
Built for the environment as the normal case
316 stainless and IP66 on the WindObserver range, heated and icing tested to MIL-STD-810F, and IP69k on the WindUltra.
Weight and power taken seriously
GMX200 at 0.5 kg wind only, MetConnect at under 70 mA at 12 V DC, and a WindUltra designed for platforms where current draw is the binding constraint.
Bespoke where standard does not fit
LevelDefend is a military-grade level sensor built to a customer requirement, and Gill engineers develop embedded solutions where an off-the-shelf product cannot be made to work.
Designed to integrate
CAN, RS232, RS422, RS485, Modbus, SDI-12 and analogue outputs, with Pt100 and analogue inputs where existing instruments have to join the same station.
Traceability that survives scrutiny
Independent UKAS-accredited calibration across six parameters, for equipment from any manufacturer, so acceptance and investigation both have something to refer to.
Every operational decision starts at a measurement point
Switch between land, sea and air: vehicles, perimeters and deployable sites; ship’s wind, flight decks and machinery; uncrewed aircraft, landing points, airfields and ranges.
Mast head instruments
The top of a mast is the right place for the measurement and the wrong place for anything that needs a rigger.
- WindObserver 75 316 stainless open head, heated, IP66
- WindSonic 75 0 to 75 m/s, 0.5 kg, low mast loading
- WindMaster Pro 3-axis to 32 Hz where turbulence matters
Lower mast and reference levels
A second level turns one reading into a profile, which is what tells you whether the top sensor is seeing the site or the mast.
- WindSonic 60 0 to 60 m/s, economical per additional level
- MetConnect THP WMO-compliant separation of sensors by height
- MaxiMet GMX500 wind, temperature, humidity and pressure in one unit
Perimeter and boundary
A perimeter runs for kilometres through terrain nobody visits, so power draw and maintenance interval decide what can actually be installed.
- MaxiMet GMX200 wind only, 0.5 kg, minimal power
- MetConnect THP 5 to 30 V DC, under 70 mA at 12 V DC
- WindSonic 60 no moving parts to service along the line
Gates, barriers and access control
A barrier that cannot prove its position stops the traffic it exists to control, and it cycles all day.
- Blade position sensors non-contact inductive, unlimited-life feedback
- Blade360 contactless rotary position for barrier arms
- Blade Dual Output a second independent channel where redundancy is required
Vehicle fuel and fluid level
Range is a fuel calculation, and a float gauge on a vehicle crossing rough ground is telling you about the terrain, not the tank.
- LevelDefend military-grade, 6082 T6 anodised aluminium, sealed solid state
- LevelLite lightweight aluminium, IP68, voltage or current output
- LevelPro stainless steel, IP66 and IP68, 0-10 V or 4-20 mA, RS232 for configuration
Vehicle-mounted environmental sensing
A crew making a decision from a vehicle needs conditions where the vehicle is, not where the met station is.
- WindUltra compact 2-axis, IP69k, low power, built for mobile platforms
- MaxiMet GMX200 wind only, 0.5 kg, quick to mount
- MaxiMet GMX500 wind, temperature, humidity and pressure in one housing
Deployable and expeditionary sites
A deployable site is set up by people with other jobs to do, in weather, so setup time and configuration are part of the specification.
- MaxiMet GMX200 0.5 kg, wind only, one cable, one output string
- MaxiMet GMX551 wind, T, H, P, solar and rainfall in one housing
- MetConnect One MetSet and MetView configuration and logging software
Field shelters and accommodation
Shelter heating, ventilation and condensation all follow temperature and humidity, and the record matters when equipment inside starts failing.
- MaxiMet GMX300 temperature, humidity and pressure, no wind
- MetConnect THP temperature 0.2 degrees C, humidity 1.5 percent RH
- MaxiMet GMX400 temperature, humidity, pressure and rainfall
Turret, hatch and actuator position
Position feedback on a platform runs through vibration, shock and grit, and a contacting sensor is a wear item somebody has to change in the field.
- Blade position sensors non-contact inductive, no wearing parts
- Blade60 contactless linear position feedback
- Blade25 contactless linear position for compact installations
Fuel handling and bowsers
Bulk fuel is a classified area wherever it is parked, and the stock figure is a logistics decision before it is a safety one.
- WindObserver IS ATEX, IECEx and UKEX certified, EN 60945:2002 for EMC
- LevelPro capacitive level, fully sealed solid-state electronics
- LevelDefend military-grade level to customer requirement
Stand-off and remote sensing positions
The useful measurement position is often the one you cannot get power or a person to reliably.
- MetConnect THP 5 to 30 V DC, SDI-12 v1.3, Modbus, NMEA 0183
- MaxiMet GMX200 0.5 kg, minimal power, single output string
- WindUltra IP69k, low power, built for harsh mobile use
Precipitation and going conditions
Rainfall drives ground conditions, mobility and river crossing, and a gauge that blocks stops reporting during the event you care about.
- TruMet PW100 optical, 0 to 200 mm/hr, no moving parts to block
- MaxiMet GMX603 integrated optical rainfall, 5 percent or better
- MaxiMet GMX551 rainfall alongside wind, T, H, P and solar
Heat stress and human performance
People work in protective equipment in heat, and air temperature alone understates what that does to them by a wide margin.
- MaxiMet GMX552 WBGT heat stress with wind, T, H and P, 1.29 kg, IP66
- MaxiMet GMX500 wind, temperature, humidity and pressure
- MetConnect One where third-party sensors join the same station
Calibration and traceability
Acceptance testing, trials and incident investigation all rest on instruments somebody has to prove were right at the time.
- UKAS-accredited air velocity calibration traceable certification for anemometers
- Multi-parameter calibration six parameters, equipment from any manufacturer
- Recalibration scheduling intervals, reminders and turnaround
Ship’s wind at the mast head
A ship’s wind reading feeds navigation, flight operations and weapons meteorology, and it comes from a sensor on a mast that nobody climbs at sea.
- WindObserver 75 316 stainless, heated, IP66, Lloyd’s Register Type Approved
- WindObserver II Lloyd’s Register Type Approval and ABS Product Design Assessment
- WindObserver 90 0 to 90 m/s where the extreme wind case sets the specification
Bridge wing and navigation
On a moving platform, wind direction means little without the heading, so the sensor has to carry its own compass or take one from the ship.
- MaxiMet GMX560 wind, temperature, humidity and pressure with a 6-axis compass
- MaxiMet GMX260 wind with a 6-axis compass, 0.5 kg, IP66 and IP68
- WindUltra compact 2-axis, IP69k, for exposed positions
Flight deck launch and recovery
Helicopter launch and recovery limits are applied at the flight deck, on a platform that is itself moving, in airflow bent by the hangar and superstructure.
- WindObserver 70 heated, IP66, 316 stainless, Lloyd’s Register Type Approved
- MaxiMet GMX560 marine station with 6-axis compass, IP68
- WindObserver II ABS Product Design Assessed for marine service
Fuel, ballast and bilge level
A tank on a ship never sits still, so a float reports the sea state as much as the contents, and tanks are among the hardest places on board to reach.
- LevelDefend military-grade capacitive level, built to customer requirement for marine craft
- LevelPro stainless steel, IP66 and IP68, 0-10 V or 4-20 mA, RS232 for configuration
- DD1615 level display where a local readout is needed
Engines, gearboxes and generators
At sea, a machinery failure is fixed with what is on board, so wear has to be seen developing long before it becomes a breakdown.
- WearDetect fine and coarse ferrous debris, water presence and oil temperature
- WearDetect with Display the same sensor with an integrated display
- Outputs 0-10 V, 4-20 mA, CANbus or Modbus RTU into the machinery system
Rudder, hatch and actuator position
Steering gear, hatches and actuators have to prove their position through salt water and vibration, where a contacting sensor is a wear item.
- Blade360 full 360 degree contactless position, IP67, sealed for temporary immersion (1 m for 30 min)
- Blade Dual Output a second channel where redundancy is required
- Blade60 contactless linear position to 60 mm
Uncrewed surface vessels
An uncrewed vessel carries its sensors through spray and green water with nobody to clear them, on a power budget set by the length of the mission.
- WindUltra IP66, IP68 and IP69k, low power, heated
- MaxiMet GMX260 wind with a 6-axis compass for moving platforms
- LevelLite lightweight aluminium fuel level, IP68, voltage or current output
Uncrewed air systems
On an airframe, every gram of sensor is endurance you do not get back, and the launch decision still needs a wind number.
- WindUltra compact 2-axis, IP69k, low power, built for mobile platforms
- LevelLite lightweight aluminium fuel level, IP68, voltage or current output
- WindSonic 60 0.5 kg ground reference for launch and recovery
UAV launch and recovery
The launch decision is a wind number taken at the launcher, and the ground reference has to be carried in with everything else.
- WindSonic 60 0.5 kg ground reference for launch and recovery
- MaxiMet GMX200 wind only, 0.5 kg, one cable and one output string
- MaxiMet GMX500 wind, temperature, humidity and pressure in one unit
Rotary wing operations
Rotary wing crews work to wind and turbulence limits checked at the landing point, often at night and off a prepared surface that was a field last week.
- WindObserver 70 heated, IP66, 316 stainless, marine type approved
- MaxiMet GMX501 compact station where pad space and cabling are tight
- WindSonic M heated, 0.9 kg, for a pad-side reference
Airframe actuator position
On an airframe, position feedback has to be light, survive vibration for the life of the aircraft and report its own health.
- Blade position sensors non-contact, with unlimited mechanical life
- Blade25 contactless linear position to 25 mm
- Blade Dual Output a second channel where redundancy is required
Airfield surface wind
At a military airfield the runway wind feeds every take-off and landing, and the reading has to hold through icing and the long winters in between.
- WindObserver 70 accepted for FAA and CAA AWOS reporting
- WindObserver 75 heated head, icing tested to MIL-STD-810F
- MetConnect THP temperature, humidity and pressure at the same site
Ranges and ballistic meteorology
On a firing or test range, wind, temperature and pressure at the moment of the event feed the trajectory, and the trial is only as good as that record.
- WindObserver 90 0 to 90 m/s, 316 stainless, heated
- MaxiMet GMX500 wind, temperature, humidity and pressure in one unit
- WindMaster Pro 3-axis to 32 Hz where turbulence matters
Radomes and sensor installations
A fixed installation is judged on availability over years, in a place where a maintenance visit is a task in its own right.
- WindObserver 90 0 to 90 m/s, 316 stainless, IP66, no moving parts
- WindObserver 75 heated head, icing tested to MIL-STD-810F
- MetConnect THP temperature, humidity and pressure at the same site
The specification changes with the platform
A defence estate measures in three very different worlds. On land: fuel, position and conditions on vehicles, deployable sites and perimeters. At sea: ship’s wind, flight decks, tanks and machinery on a platform that never stops moving. In the air: uncrewed aircraft, landing points, airfields, ranges and the installations that watch the sky.
The measurement parameter may be the same. The engineering constraint around it is not.
On land the binding constraints are shock, vibration, grit and setup time. At sea they are salt, a moving deck, marine approvals and the distance to the nearest spare. In the air they are grams, milliwatts and a launch decision that waits on a wind number. Gill covers all three, and the sections below take each one in turn.
Where independent verification is required, Labcal provides UKAS-accredited calibration for equipment from multiple manufacturers across six measurement parameters, supporting a mixed estate through one traceable calibration service.
Mechanical failure is a design consideration
Bearings, floats and other moving mechanisms introduce wear and additional maintenance requirements, particularly where equipment is difficult to access once deployed.
No moving parts across core sensing ranges
Weight and power are capability requirements
On an airframe, dismounted system or battery-powered remote site, mass and power consumption directly affect endurance and deployment flexibility. They need to be considered as part of the sensing specification from the outset.
WindUltra: compact, low power, IP69K
The environment is part of the specification
Salt, sand, vibration, shock, icing and immersion can all form part of the operating environment. Equipment has to maintain its measurement performance within the conditions in which it is actually deployed.
Icing tested to MIL-STD-810F
The measurement has to remain provable
Acceptance testing, trials analysis and incident investigation can all depend on knowing what an instrument measured and how that measurement was verified.
UKAS-accredited calibration to ISO/IEC 17025:2017
On land, the sensor has to survive everything the vehicle drives through
Land carries the widest spread of defence measurement: protected and logistics vehicles, deployable and expeditionary sites, perimeters and access points, and the bulk fuel that keeps all of it moving.
The environment is dust, sand, mud, shock and vibration, with heat that the people working in protective equipment feel more than any instrument does. Sites are set up by crews with other jobs to do and then left unattended for long periods, so setup time, power draw and the absence of wearing parts decide what actually gets fitted.
On a vehicle, a float gauge crossing rough ground reports the terrain rather than the tank, and a contacting position sensor on a hatch or turret is a wear item somebody has to change in the field. Capacitive level sensing and non-contact position feedback remove both.
What gets measured on land
- Fuel and fluid level : LevelDefend, military grade and built to customer requirement, and LevelPro
- Hatch, turret and actuator position : Blade non-contact position sensors, with Blade Dual Output for redundancy
- Vehicle and deployable met : WindUltra at IP69k, MaxiMet GMX200 at 0.5 kg and the GMX551 full station
- Perimeters and remote positions : MetConnect THP at under 70 mA at 12 V DC
- Heat stress : MaxiMet GMX552 measuring WBGT for people in protective equipment
- Bulk fuel in classified areas : WindObserver IS, certified to ATEX, IECEx and UKEX
At sea, the deck moves, the salt never stops and the nearest spare is in port
A warship asks more of an instrument than almost any land site. Salt spray, green water, shock, vibration and electromagnetic congestion are the normal case, and the ship still needs a wind reading it can trust for flight deck operations, navigation and weapons meteorology.
Everything is measured on a platform that pitches and rolls, in airflow bent by the superstructure, so where a sensor is sited matters as much as which sensor it is. Below deck, tanks never sit still and engines, gearboxes and generators have to keep running until the ship is back alongside.
The WindObserver range is built for it: 316 stainless steel, IP66, heated and icing tested to MIL-STD-810F. The WindObserver 65, 70, 75 and 90 carry Lloyd’s Register Type Approval, and WindObserver II adds ABS Product Design Assessment.
What gets measured at sea
- Ship’s wind and flight deck limits : WindObserver, Lloyd’s Register Type Approved on the 65, 70, 75 and 90
- Bridge wing and smaller masts : MaxiMet GMX260 and GMX560 with a 6-axis compass, IP66 and IP68
- Fuel, ballast and bilge level : LevelDefend, military-grade capacitive level for marine craft
- Engines, gearboxes and generators : WearDetect oil debris monitoring for developing wear
- Rudder, hatch and actuator position : Blade360, full 360 degrees, IP67, sealed for temporary immersion (1 m for 30 min)
- Uncrewed surface vessels : WindUltra at IP68 and IP69k, low power and heated
In the air, every gram costs endurance and every launch waits on a wind number
Air covers the aircraft and everything that supports it: uncrewed air systems, rotary wing operations from prepared and improvised landing points, airfields and ranges, and the radar and sensor installations that watch the sky.
On the airframe, mass and power are capability. A sensor that weighs more or draws more takes endurance away from the mission, so the specification starts with grams and milliwatts. On the ground, launch and recovery limits are applied where the aircraft is, often at night and on a surface that was a field last week, not at a met station somewhere else on the base.
Fixed air installations are the opposite problem. Radomes, range masts and airfield sensors are judged on availability over years, in places where reaching the instrument is a task in its own right, and where the wind record feeds trials, ballistic meteorology and flight safety.
What gets measured in the air
- UAV wind and fuel : WindUltra compact and low power, with LevelLite lightweight fuel level
- Launch and recovery : WindSonic 60 or MaxiMet GMX200, both 0.5 kg ground references
- Landing point wind : WindObserver 70 heated, or MaxiMet GMX501 where pad space is tight
- Airfield surface wind : WindObserver 70, accepted for FAA and CAA AWOS reporting
- Radomes and range masts : WindObserver 90 to 90 m/s, icing tested to MIL-STD-810F
- Airframe actuator position : Blade non-contact position sensors with unlimited mechanical life
insight
Why removing the moving part is a sustainment decision, not a technical one
A cup and vane anemometer has bearings. Bearings wear, and in sand, salt or icing they wear fast. That single design choice produces a spares holding, a maintenance schedule, a training requirement and a failure mode that reports a plausible wrong answer rather than an obvious fault.
Ultrasonic measurement removes the rotating element entirely. Gill pioneered it, and the same principle now runs through the range: the WindObserver in 316 stainless at IP66, heated and icing tested to MIL-STD-810F, and the WindUltra as a compact low-power IP69k sensor for platforms where mass and current draw are the binding constraints.
That is why sensor architecture belongs in the through-life conversation and not only the technical one. Removing a mechanical wear point can reduce the spares, maintenance and replacement burden that accumulates across a platform’s service life.
Find your defence application
Nine defence and security applications, three on land, three at sea and three in the air, where the platform, the environment and the support burden decide what the measurement has to be.
Vehicles and Platforms
Shock, vibration and grit as normal service
Fuel and fluid level, hatch and actuator position, and local environmental measurement all have to survive a platform environment and integrate with what the vehicle already runs. A float gauge on rough ground reports the terrain rather than the tank.
Engineering: Military-grade level sensing, non-contact position feedback, compact anemometry.
Deployable and Expeditionary Sites
Set up by people with other jobs to do
A deployable met capability is judged on how quickly it works and how little it needs afterwards. One unit, one cable and one output string beats a better specification that takes an hour to commission in weather.
Engineering: Compact all-in-one stations, rapid configuration, low-power operation.
Fuel, Logistics and Infrastructure
Stock figures and classified areas
Bulk fuel is a classified area wherever it is parked, and the level measurement is a logistics decision before it is a safety one. Certification decides the shortlist before performance is discussed.
Engineering: Intrinsically safe wind sensing, capacitive level measurement, hazardous-area experience.
Surface Ships and Flight Decks
The wind limit is checked on a moving deck
Launch and recovery limits are applied at the flight deck, on a platform that is itself moving. Ship’s wind, bridge conditions and weapons meteorology all depend on a sensor sited clear of the superstructure and approved for marine service.
Engineering: Lloyd’s Register Type Approved ultrasonic wind, marine weather stations with compass.
Shipboard Machinery and Fluids
Below deck, where access is hardest
Fuel and fluid levels in tanks that never sit still, engines, gearboxes and generators that must not fail at sea, and hatches and actuators that have to prove their position.
Engineering: Military-grade capacitive level sensing, oil debris monitoring, non-contact position feedback.
Uncrewed Surface Vessels
Nobody on board to clear the sensor
An uncrewed vessel runs for weeks on a fixed power budget, through spray and green water, with every sensor exposed and nobody to service it until recovery.
Engineering: IP69k compact anemometry, marine weather stations with compass, lightweight fuel level sensing.
Uncrewed Air Systems
Every gram is endurance
On an airframe, mass, power draw and ingress protection are decided before accuracy is discussed. The ground reference at launch and recovery has to be there too, and has to be carried in with everything else.
Engineering: Compact low-power anemometry, lightweight fuel level sensing, launch-site weather stations.
Rotary Wing and Landing Points
The limit is checked at the pad
Landing point wind and turbulence limits are applied at the point of landing, often at night, often on a surface prepared days earlier. A reading from a distant met station is not the same information.
Engineering: Heated ultrasonic wind measurement, compact weather stations, helideck experience.
Ranges, Radomes and Airfields
Availability measured in years
Radar sites, range instrumentation and airfields need measurement that keeps working between visits that are themselves a task to arrange. The failure that matters is the quiet one, where the instrument keeps reporting something plausible and wrong.
Engineering: Ultrasonic wind measurement, reference weather stations, traceable calibration.
Defence and security technologies
Products and services engineered for defence environments, spanning wind measurement, compact and vehicle-mounted sensing, military-grade level measurement, non-contact position feedback and calibration across Gill.
Meteorological Technology
WindObserver
Heated 316 stainless open-head 2-axis anemometer
The fixed-site workhorse. Heated, icing tested, and available as an intrinsically safe variant for fuel and other classified areas.
WindUltra
Compact 2-axis wind sensor
Built for platforms where mass, power draw and ingress protection decide whether a sensor can be carried at all.
MaxiMet
All-in-one weather station, no moving parts
One unit, one cable, one output string, which is what makes a deployable met capability practical. The GMX552 adds WBGT heat stress.
MetConnect
Separable weather station with third-party inputs
For sites that need sensors separated by height, or that have to bring existing instruments into one record.
Industrial Sensors
Level sensing
Capacitive liquid level sensors
Continuous level with no moving parts, including a military-grade variant built to a customer specification for vehicles and marine craft.
Blade position sensors
Non-contact inductive position sensing
Linear and rotary position feedback with nothing in contact, used across defence, aerospace and motorsport for exactly that reason.
WearDetect
Oil debris sensor
Monitors lubricating oil for ferrous wear particles, so platform and generator wear is visible before it becomes a recovery task.
UKAS-accredited calibration for six measurement parameters
Labcal is an independent UKAS-accredited calibration laboratory, Lab 0625, operating to ISO/IEC 17025:2017. It provides calibration across gas and air flow, air velocity, liquid flow, pressure, temperature and humidity, all under one roof.
For defence measurement that includes anemometers, Pitot tubes and thermal probes, alongside pressure gauges and transducers, thermometers, temperature and humidity probes and data loggers. Labcal supports equipment from Gill and other manufacturers, which is the point on an estate where instruments arrive across several programmes and primes.
01 · Gas and air flow
Gas meters · Mass flow controllers · Dispensing systems · Low-flow laboratory to higher-flow industrial
02 · Air velocity
Anemometers · Pitot tubes · Thermal probes
03 · Liquid flow
Flow meters and sensors · Process control equipment · Water used for the accredited capability
04 · Pressure
Gauges · Transducers · Manometers · Transmitters
05 · Temperature
Thermometers · Probes · Thermocouples · Data loggers
06 · Humidity
Hygrometers · Probes · Transmitters
The measurement has to reach the platform or the system that uses it
A defence measurement is almost never read at the sensor.
Gill supports environmental monitoring, industrial sensing, embedded electronics and systems integration to help primes, integrators and operators bring reliable measurement into vehicle architectures, deployable systems and fixed-site infrastructure.
Whether the requirement is CAN into a platform bus, SDI-12 across a remote site, an analogue loop into existing equipment, or a bespoke embedded solution, Gill engineers can support integration from specification through commissioning.
Outputs and options
- CAN & RS232 : Platform buses and vehicle architectures
- Modbus & SDI-12 : Fixed sites and remote networks
- 4-20 mA & 0-10 V : Level and position into existing equipment
- Bespoke builds : Custom level sensing and embedded development
Defence and security application notes
3 application pages and 1 numbered application note for this sector. The pages describe the measurement problem and the instruments that answer it; the numbered notes are the original engineering documents, each with its PDF.
Defence measurement questions, from environment to integration
There is no rotating element, so there is no bearing to wear, seize or foul in sand, salt, spray or icing. That removes a mechanical failure point from equipment that is often difficult to reach once it is in service, and it removes the failure mode that matters most: a seized cup and vane keeps reporting, and what it reports is calm.
The measurement also starts instantly and has no starting threshold, which matters at low wind speeds around landing points and deployable sites. Output is digital and configurable, so the same sensor can present CAN, RS422, RS485, Modbus or analogue to whatever the platform already uses.
Because the cost lands in support rather than purchase. A wearing part becomes a spares holding, a maintenance task, a training requirement and a field failure mode, repeated across the fleet for the life of the platform.
WindUltra. It is a compact 2-axis ultrasonic sensor at IP69k with a low-power design, built for mobile platforms where mass and current draw are the binding constraints.
A float on a vehicle crossing rough ground reports the motion of the fuel, not the quantity of it, and the float mechanism is a wear item in a high-vibration environment. Capacitive sensing has no moving parts.
The Blade range, which is non-contact inductive in linear and rotary formats with a dual-output variant for redundancy. It is used across defence, aerospace and motorsport for the same reason: nothing in the measurement wears.
As wet bulb globe temperature, which combines air temperature, humidity and radiant heat. The MaxiMet GMX552 measures WBGT alongside wind, temperature, humidity and pressure in a 1.29 kg IP66 unit.
The WindObserver range is heated, icing tested to MIL-STD-810F and operates from -55 to +70 degrees C with heating. The WindSonic M is heated aluminium operating to -40 degrees C.
The compact MaxiMet models are one unit, one cable and one output string, so the site work is mounting and power. MetSet and MetView, the configuration and logging software, are supplied free.
MetConnect runs from 5 to 30 V DC at less than 70 mA at 12 V DC. The compact MaxiMet models are single-unit stations with one supply. Both are practical on solar and battery.
Tipping buckets have moving parts, block with debris and under-read in light rain. The TruMet PW100 measures optically with no moving parts, 0 to 200 mm/hr at 5 percent accuracy and 0.1 mm resolution. It measures liquid precipitation only.
Bulk fuel storage is a classified hazardous area. The WindObserver IS is certified to ATEX, IECEx and UKEX, with EN 60945:2002 for EMC.
Oil condition, fluid level and actuator position. WearDetect monitors lubricating oil for ferrous wear particles, which moves the maintenance question from run hours to what is actually wearing.
Yes. CAN is available on bespoke LevelLite sensors, the Blade range and engine control products offer CAN, and level sensors are also available with 0-10 V, 4-20 mA and RS232 outputs.
Set by the programme, the trials protocol and whatever the measurement is used to justify. Where readings support acceptance or investigation, annual traceable calibration is common.
Labcal is UKAS-accredited to ISO/IEC 17025:2017 and calibrates air velocity, temperature, humidity, pressure, and gas and liquid flow.
Six: gas and air flow, air velocity, liquid flow, pressure, temperature and humidity. Labcal is an independent UKAS-accredited laboratory, Lab 0625, and calibrates equipment from any manufacturer, not only equipment supplied by Gill.
Yes. LevelDefend is the clearest example: a military-grade capacitive level sensor for defence vehicles and marine craft, in 6082 T6 anodised aluminium, solid state and environmentally sealed, built to a customer requirement rather than taken off a shelf. Gill engineers develop embedded and integrated solutions on the same basis where a standard product does not fit the platform or the architecture.
The WindObserver 65, 70, 75 and 90 carry Lloyd’s Register Type Approval, and WindObserver II adds ABS Product Design Assessment. All are 316 stainless steel, IP66, heated and icing tested to MIL-STD-810F.
The intrinsically safe WindObserver IS is certified for hazardous areas but does not carry Lloyd’s Register or ABS approval.
With the sensor sited clear of the superstructure and a heading reference, so the reading can be related to the vessel. The MaxiMet GMX260 and GMX560 marine models include a 6-axis compass and IP68 protection for that reason.
LevelDefend is a military-grade capacitive level sensor for defence vehicles and marine craft, in 6082 T6 anodised aluminium, solid state and environmentally sealed, built to a customer requirement. Capacitive sensing has no float, so vessel motion does not jam the measurement.
Speak to our team
Tell us what you need to measure, where and under what conditions. We’ll help you work out the appropriate approach.
We aim to respond in one working day.