Gill Instruments · Weather stations
MaxiMet from Gill Instruments
Distributor for Gill Instruments in SwedenMaxiMet is Gill Instruments’ range of compact weather stations. A single unit measures wind ultrasonically and, depending on model, temperature, humidity, pressure, solar radiation and precipitation. It mounts on a pipe, connects with one cable and delivers finished values via SDI-12, Modbus or NMEA.
The models
The model number tells you what the station measures. These are the ones we suggest most often.
Wind
MaxiMet GMX200
Wind speed and direction, with a built-in compass.
- 0–60 m/s, 0.5 kg.
- The GMX240 also measures rainfall optically.
Wind and weather
MaxiMet GMX500
Wind, temperature, humidity and pressure. According to Gill, the most specified model.
- Temperature ±0.3 °C, humidity typically ±2%.
- Optional heating.
With solar radiation
MaxiMet GMX501
As the GMX500, with a built-in pyranometer for 0–1600 W/m².
- The GMX551 also has an input for a rain gauge.
With rain gauge input
MaxiMet GMX550
As the GMX500, with an input for an external rain gauge.
- Suits tipping bucket gauges and Gill’s optical TruMet PW100.
With optical rainfall
MaxiMet GMX603
As the GMX500, with built-in optical measurement of rain, 0–200 mm/h.
- Resolution 0.1 mm.
- Accuracy 5% or better.
Marine
MaxiMet GMX560
For ships, buoys and platforms, with a compass that also measures pitch and roll.
- Sealed to IP66 and IP68.
- The GMX260 is the corresponding wind-only model.
New in the range is the GMX552, which uses a black globe to calculate the heat stress index WBGT for outdoor workplaces.
Compare the models
What each model measures.
| GMX200 | GMX500 | GMX501 | GMX551 | GMX603 | |
|---|---|---|---|---|---|
| Wind | Yes | Yes | Yes | Yes | Yes |
| Temperature, humidity and pressure | – | Yes | Yes | Yes | Yes |
| Solar radiation | – | – | Yes | Yes | – |
| Precipitation | – | – | – | Input for an external gauge | Built-in optical measurement |
| Heating | No | Optional | Optional | Optional | Optional |
| Weight | 0.5 kg | 0.7 kg | 0.8 kg | 0.8 kg | 1.1 kg |
Swipe sideways to see the whole table. Simplified figures. Full specifications and datasheets are available from Gill Instruments ↗.
What the MaxiMet models have in common
Wind is measured ultrasonically over 0–60 m/s. A built-in compass is used to correct the wind direction, and GPS is available as an option. Besides the measured values the sensor calculates dew point, WMO average and gust wind and pressure at sea level, among other things.
The GMX500 draws 26 mA at 12 V, and 1.3 mA in eco-power mode with one reading per hour. The MetSet and MetView programs, for set-up and display, are free.
- Wind0–60 m/s, direction ±3°
- Temperature±0.3 °C
- Humidity0–100%, typically ±2%
- Pressure300–1250 hPa
- Operating temperature−35 to +70 °C, −40 °C with heating
- ProtectionIP66
More weather stations and precipitation
When the station has to be extended or precipitation measured separately.
Modular weather station
MetConnect One
A stainless steel hub box with a WindSonic, temperature, humidity and pressure.
- Inputs for Pt100, two analogue sensors and a rain gauge.
- SDI-12, Modbus, NMEA and ASCII.
Modular weather station
MetConnect THP
As the MetConnect One but without a built-in wind sensor, with an input for a separate Gill wind sensor.
- Can be combined with a heated wind sensor.
Precipitation
TruMet PW100
An optical rain gauge with no moving parts, for rain up to 200 mm/h.
- One pulse per 0.1 mm, like a tipping bucket.
- Connects to the MaxiMet GMX550 and GMX551.
What we do
Choice and quote
We help you choose model, output, heating and cable and send you a quote.
Wiring
The sensor is connected to a Campbell Scientific data logger or directly to your system.
Installation
Mounting, alignment and commissioning on site, on a mast, roof or quay.
Service
Troubleshooting, checks and spare parts, and help when a sensor has to go back to Gill.
Frequently asked questions about MaxiMet
MaxiMet or separate sensors?
MaxiMet is quick to install and easy to replace. Separate sensors on a mast give more freedom to choose measurement heights, accuracy and heating. We help you weigh one against the other.
Can MaxiMet be connected to a data logger?
Yes. With SDI-12 it connects directly to a Campbell Scientific data logger, which stores the values and sends them on.
Does MaxiMet cope with winter?
The sensor operates down to −35 °C. The GMX500, GMX501, GMX550, GMX551, GMX560 and GMX603 are available with heating of the wind transducers and then operate down to −40 °C.
Does MaxiMet measure snow?
No. The optical precipitation measurement in the GMX603 measures rain. For snow depth and winter precipitation we suggest separate sensors.
More from Gill Instruments
Would you like a quote for a MaxiMet?
Tell us what the station will measure and what it will connect to, and we will suggest a model.