Strike the structure
on a number you can justify
Portable wind measurement for stages, marquees and temporary structures, with traceable calibration behind the reading, because the person deciding to strike will be asked how they knew.
The decision is unpopular either way
Temporary structures carry documented wind limits, and somebody has to decide when they are reached. Striking early costs the event, and striking late is the failure nobody recovers from.
The person making that call will be asked afterwards how they knew, and the answer needs to be better than an app on a phone or a figure from an airfield some distance away.
The measurement is also awkward. An event site exists for a few days, is built by contractors who leave, and has no permanent infrastructure, so whatever measures the wind has to arrive, work immediately and be accounted for at the end.
Every public decision starts at a measurement point
Three views of the work public bodies do with measurement: observe and forecast, manage and regulate, warn and respond. From rainfall and rivers to bridges, flood infrastructure and the incident itself.
Observing station wind
A national network reports wind at the same height, the same way, for decades, and every change of instrument is a potential step in the record.
- WindObserver 75 heated, 316 stainless, IP66, no moving parts
- MetConnect One separable sensors, each sited at its own height
- WindSonic 75 0 to 75 m/s, 0.5 kg, low mast loading
Temperature, humidity and pressure
Air temperature, humidity and pressure underpin every forecast, frost warning and climate statistic, and they have to be measured at screen height, clear of the mast.
- MetConnect THP temperature 0.2 degrees C, humidity 1.5 percent RH, pressure accuracy 0.5 hPa
- MetConnect One Pt100 to IEC 60751 input for a reference thermometer
- MaxiMet GMX300 temperature, humidity and pressure, no wind
Rainfall intensity
Rainfall is the input to the flood model, the drought statistic and the drainage design, so a gauge that can block with debris puts the record at risk when it matters most.
- TruMet PW100 optical, 0 to 200 mm/hr, one pulse per 0.1 mm into an existing logger
- MetConnect One contact closure input for rainfall alongside the weather
- MaxiMet GMX603 integrated optical rainfall alongside the weather
Calibration and evidence
A regulator, an inquiry or a court can ask what was measured, when and how it was verified. That is a calibration question years before it is asked.
- UKAS-accredited air velocity calibration traceable certification for anemometers
- Multi-parameter calibration six parameters, equipment from any manufacturer
- Recalibration scheduling intervals, reminders and turnaround
Agricultural field stations
Frost, spraying and irrigation decisions are made field by field, on conditions that can differ sharply from the nearest regional station.
- MaxiMet GMX551 wind, T, H, P, solar and rainfall in one housing
- MaxiMet GMX501 adds solar radiation to wind, T, H and P
- MetConnect One analogue and Pt100 inputs for third-party instruments
Remote power and resilience
Most public monitoring sites have no mains, so solar, battery and a power budget decide what can be installed and whether it keeps reporting.
- MetConnect THP 5 to 30 V DC, less than 70 mA at 12 V DC
- MaxiMet GMX200 0.5 kg, single supply, minimal draw
- MaxiMet GMX301 solar radiation for a PV-powered site
Gauging station and telemetry
A gauging station is judged on the events it captured, not the years it sat quietly, and it has to report from somewhere with no mains and no visitor.
- MetConnect One SDI-12 v1.3 into an existing hydrometric logger
- MetConnect THP 5 to 30 V DC, under 70 mA at 12 V DC
- MaxiMet GMX400 temperature, humidity, pressure and rainfall
River level and flood warning
Flood warning lead time is the whole product, and it comes from level measurement that was already installed and already working.
- LevelPro capacitive level, no moving parts to silt up
- LevelSlick FEP coated for silty and debris-laden water
- TruMet PW100 rainfall intensity to 0 to 200 mm/hr alongside level
Coastal surge and tidal flooding
Surge combines tide, pressure and wind, so a coastal warning needs all three measured locally rather than two of them inferred.
- WindObserver 75 316 stainless, IP66, Lloyd’s Register Type Approved
- MetConnect THP pressure 300 to 1100 hPa, accuracy 0.5 hPa
- LevelPro water level with no moving parts in salt water
Bridge and exposed road wind
Bridge closures, speed restrictions and high-sided vehicle bans are set on wind measured at the structure, and the decision is questioned the moment traffic stops.
- WindObserver 75 heated, 316 stainless, IP66, no moving parts
- WindObserver 90 0 to 90 m/s for exposed estuary crossings
- WindUltra compact 2-axis, IP69k, for deck-level positions
Air quality and pollution monitoring
A pollution reading only tells a regulator where it came from when wind speed and direction are measured at the same site and the same time.
- WindSonic 60 0 to 60 m/s, economical across a network of sites
- MaxiMet GMX500 wind, temperature, humidity and pressure in one unit
- WindMaster Pro 3-axis to 32 Hz where dispersion and stability matter
Cold weather and winter planning
Gritting, warm spaces and cold weather alerts are all triggered on measured temperature, and they are all funded on the assumption the trigger is right.
- MetConnect THP Pt100 input for a surface temperature probe
- MaxiMet GMX400 temperature, humidity, pressure and rainfall
- WindSonic M heated, operating to -40 degrees C
Civic buildings and public estate
Public buildings become rest centres and reception centres, and their heating, ventilation and drainage are all somebody in an office deciding without data.
- MetConnect THP temperature 0.2 degrees C, humidity 1.5 percent RH
- MaxiMet GMX551 rooftop station with wind, T, H, P, solar and rainfall
- MaxiMet GMX300 temperature, humidity and pressure only
Heat alerts and public health
Heat health alerts and worker safety both rest on the same measurement, and a shaded enclosure reading is not what people are exposed to.
- MaxiMet GMX552 WBGT heat stress with wind, T, H and P, 1.29 kg, IP66
- MaxiMet GMX551 wind, T, H, P, solar and rainfall in one housing
- MetConnect THP reference temperature and humidity
Flood barriers and defences
A demountable defence has to be deployed before the peak, which means the decision is made on a measurement rather than on a look at the river.
- LevelPro continuous level upstream of the defence
- Blade position sensors non-contact position proving on gates and penstocks
- TruMet PW100 catchment rainfall intensity, no bucket to block
Sluice, gate and penstock position
A gate that is commanded shut has to prove it is shut, under water and in silt, with a sensor that does not wear every time it moves.
- Blade360 full 360 degree contactless position, IP67, sealed for temporary immersion (1 m for 30 min)
- Blade60 contactless linear position to 60 mm
- Blade Dual Output a second channel where redundancy is required
Flood pumping station machinery
A flood pump runs hard for a few days a year and sits idle in between, so gearbox and engine wear has to be caught before the event, not during it.
- 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 telemetry
Wet well and sump level
Pump start and stop, overflow alarms and spill reporting all hang on the level in a wet well full of debris and rag.
- LevelSlick coated for dirty, viscous and conductive liquids
- 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
Mobile incident command
A command vehicle arrives with its own met capability because the nearest station is somewhere else and the incident is here.
- MaxiMet GMX551 wind, T, H, P, solar and rainfall on one mast
- MaxiMet GMX200 wind only, 0.5 kg, fastest to raise
- WindUltra compact 2-axis, IP69k, low power for vehicle mounting
Deployable met mast
A mast that takes twenty minutes to set up in weather is a mast that does not get set up.
- MaxiMet GMX200 one unit, one cable, one output string
- MetConnect One SDI-12, Modbus and NMEA 0183 into a logger
- WindSonic 60 0.5 kg, configured with the free MetSet software
Air ambulance and landing sites
A landing site is chosen in minutes and used at night, and the wind limit is checked where the aircraft is going rather than where the met station is.
- WindObserver 70 heated, IP66, 316 stainless, marine type approved
- MaxiMet GMX501 compact station for a hospital or fixed landing site
- WindSonic M heated, 0.9 kg, for a temporary pad-side reference
Fire ground and smoke plume
Where the smoke goes decides who is evacuated, and that is a wind direction question answered at the incident within the first few minutes.
- MaxiMet GMX200 wind only, 0.5 kg, raised in a minute
- WindMaster Pro 3-axis to 32 Hz where plume rise matters
- MaxiMet GMX500 wind, temperature, humidity and pressure
Hazardous release and dispersion
Plume modelling for a chemical release is only as good as the wind and stability data going into it, and the model is being run while people wait.
- WindMaster Pro 3-axis to 32 Hz for stability and dispersion
- MetConnect THP two analogue inputs for detection equipment
- WindObserver 75 a fixed reference at a COMAH or similar site
Water rescue and boat operations
Crews on the water need wind and conditions from the boat, on a platform where everything gets wet and nothing gets serviced mid-operation.
- WindUltra compact 2-axis, IP69k, built for wet mobile platforms
- MaxiMet GMX260 marine model with a 6-axis compass, IP66 and IP68
- MaxiMet GMX200 wind only, 0.5 kg, for a shore reference
Temporary events and crowd safety
Temporary structures, stages and marquees carry wind limits, and the decision to strike them is made by somebody who will be asked to justify it.
- WindSonic 75 0 to 75 m/s, 0.5 kg, for a temporary mast
- MaxiMet GMX200 wind only, quick to raise and configure
- WindObserver 90 0 to 90 m/s for an exposed site
The limit is documented, the measurement often is not
Stages, marquees, screens and temporary grandstands all come with wind limits in their documentation, expressed as a speed and sometimes as a gust. Those limits are precise, and the measurement applied against them frequently is not.
Height matters. A limit specified at the top of a structure is not met by a reading taken at ground level in the lee of it, and the difference is largest in the conditions that cause the decision.
Gusts matter more than means. Structures fail on peaks rather than on averages, so the measurement needs to capture short-duration maxima rather than a smoothed figure.
Traceability is what makes the decision defensible. A reading from an identifiable instrument with a calibration history is evidence; a reading from an unidentified device is an opinion with a number attached.
Height and exposure change the number
A wind limit written for the top of a stage roof is not tested by a sensor at head height behind it. Mounting the measurement at or near the structure is what makes the comparison valid.
WindSonic measures 0 to 60 or 0 to 75 m/s at 0.5 kg, which is light enough to mount on a temporary mast or on the structure itself without a structural conversation.
Measured where the limit applies
View WindSonicNothing to service, everything traceable
Event equipment spends most of its life in storage and is expected to work on the first morning. Anything with a rotating element is a maintenance task that will not have been done.
Ultrasonic measurement has no moving parts to seize between events, and instruments can be held on a traceable calibration interval so they arrive at each site already defensible.
Out of the case and working
View MaxiMetThe decision gets examined
Event safety decisions are documented, and they are examined if anything goes wrong and sometimes if nothing does. A wind reading is the central fact in a decision to strike or to continue.
Traceable calibration is what turns that reading into evidence. It identifies the instrument, establishes what it was measuring against, and shows the decision rested on something verifiable.
Labcal is an independent UKAS-accredited laboratory operating to ISO/IEC 17025:2017, calibrating equipment from any manufacturer, which suits an event inventory assembled from several suppliers.
What an event site measures
Wind measurement at the structures that have limits, with the wider conditions record for crowd and operational decisions.
Wind at the structure
WindSonic
Lightweight 2-axis ultrasonic anemometer
Lightweight ultrasonic measurement at 0.5 kg, mounted on a temporary mast or the structure itself.
WindObserver
Heated 316 stainless open-head 2-axis anemometer
Heated 316 stainless measuring to 0 to 90 m/s for coastal and upland event sites.
WindUltra
Compact 2-axis ultrasonic anemometer
A compact 2-axis anemometer for vehicle and mobile mounting around a site, sealed to IP69k.
Site conditions
MaxiMet
All-in-one weather station, no moving parts
Wind, temperature, humidity, pressure, solar radiation and rainfall from one unit for the wider operational picture.
TruMet PW100
Infrared optical rain gauge
Optical rainfall measurement supporting ground conditions and crowd movement decisions, with nothing to block.
MetConnect
Separable sensors for WMO-compliant siting
Separable sensors where a large site needs measurement at more than one point and more than one height.
Where event measurement does the work
Stages and screens
Wind measurement at the structures that carry documented limits.
Hire and build
Contractors who need a defensible reading at handover and during the event.
Temporary seating
Structures whose limits are specified and whose failure is not survivable.
Crowd and operations
Conditions behind crowd movement, ground and operational decisions.
Civic responsibility
Local authority events where the decision and its basis are both scrutinised.
Build and break
Measurement present from the first lift to the last load out.
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.
For an event inventory carrying anemometers, thermal probes, pressure instruments, thermometers, temperature and humidity probes and data loggers, one accredited laboratory keeps equipment from several suppliers on a single traceable schedule.
Gas meters · Mass flow controllers · Dispensing systems
Anemometers · Pitot tubes · Thermal probes
Flow meters and sensors · Process control equipment
Gauges · Transducers · Manometers · Transmitters
Thermometers · Probes · Thermocouples · Data loggers
Hygrometers · Probes · Transmitters
Getting the reading to the person deciding
An event wind reading is acted on by a production manager or a safety officer, often on a radio, and recorded for the event file afterwards.
Gill supports environmental monitoring, industrial sensing, embedded electronics and systems integration, so event contractors, structure suppliers and organisers can bring measurement into displays and logging.
Whether the requirement is a serial string into a display, Modbus into a site system, SDI-12 into a logger, or analogue into an existing channel, Gill engineers can support integration from specification through commissioning.
Outputs and options
- RS232 & RS485 : Site displays and production systems
- Modbus RTU : Site and structure monitoring
- SDI-12 : Loggers and the event record
- Traceable calibration : So the decision holds up on examination
What the specification looks like in practice
Measured where the limit applies
A limit written for the top of a structure is not tested by a reading taken at ground level behind it.
Gusts, not just means
Structures fail on peaks, so the measurement has to capture short-duration maxima rather than a smoothed average.
Light enough to mount anywhere
WindSonic measures 0 to 75 m/s at 0.5 kg, which suits a temporary mast or the structure itself.
Nothing to seize in storage
Ultrasonic measurement has no moving parts, on equipment that spends most of its life in a case.
Identifiable and traceable
An instrument with a calibration history turns a reading into evidence rather than an opinion.
One laboratory for the inventory
Independent UKAS-accredited calibration across six parameters, for equipment from any manufacturer.
Questions about temporary events and crowd safety
That is set by the structure documentation and the event safety plan rather than by the instrument. Limits differ between structures and configurations, and they are often expressed as both a mean and a gust.
As close as practical to the height the limit applies at. A reading taken at ground level in the lee of a structure is not testing the limit written for the top of it.
If the decision may be examined, yes. A reading from an identifiable instrument on a traceable calibration interval is evidence; a reading from an unidentified device is an opinion with a number attached.
Because it measures continuously at the structure rather than at head height when somebody remembers, and there is nothing to seize between events. It also captures gusts rather than what was happening when a reading was taken.
Generally yes. The sensors provide serial, Modbus and analogue outputs, and the engineering team can advise on the interface a particular display or site system expects.
Yes. Labcal is an independent UKAS-accredited calibration laboratory, Lab 0625, operating to ISO/IEC 17025:2017, calibrating equipment from any manufacturer across gas and air flow, air velocity, liquid flow, pressure, temperature and humidity.
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.
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