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Geos No11 - Handheld weather station with data loging
Home > Geos No11 - Handheld weather station with data loging
The Skywatch Geos No.11 is a high performance professional instrument benefiting from 25 years of experience developing measuring devices. It uses only industrial quality components and pressure, wind speed, temperature and humidity sensors that are made in Switzerland.

The product builds on the foundations of the ever popular Geos model by adding data logging as well as upgrading many of the sensors.

As well as measuring wind speed, temperature, humidity, pressure and altitude it also has an electronic compass, an LED flashlight and a small wind vane. It will also calculate and display Dew Point, Windchill, Flight Level and Density Altitude as well as showing barometer tendency and max and min values for many parameters. The internal data logger can record 24,480 sets of data. One set contains all the data from all the sensors. You can set the unit to record the data at specific intervals (configurable from 0.5 seconds to 24 hours) or manually record the data. You may then recall this logged data at any time.

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  RRP Ex Tax  Inc VAT   
  212.50  255.00 
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Measurement Range Accuracy Resolution Response time Measuring units
Windspeed 0 to 300 km/h
0 to 186 mph
+/- 2% 0.1 unit to 99.9
1 unit 100 and above
Instant km/h
(kilometers per hour)
(meters per second)
(scale of 0-12)
(miles per hour)
(feet per second)
- - - - - -
Temperature -40°C to +85°C
-40°F to +185 °F
± 0.5°C at 25°C 0.1 unit to 99.9
1 unit 100 and above
Dependant on air flow* °C (degrees Celsius)
°F (degrees Fahrenheit)
- - - - - -
Humidity 0.1 to 100% rH +/- 2% at
50% rH
0.1% rH Dependant on air flow* rH (% Relative Humidity)
- - - - - -
Pressure 10 to 1100 hPa
0.30 to 32.48 inHg
+/- 0.5% at 25°C 0.1 hPa
0.01 inHg
Instant hPa (hectopascal)
inHg (inches of Mercury)
- - - - - -
Altitude -1,000 to
21,535 m
-3,280 to
70,653 ft
+/- 0.5% at 25°C 0.1m; to 2,999 m0.5m; from 3,000 to 9,999 m1m from 10,000 to 21,535 m Instant m (meters)
ft (feet)
- - - - - -
- - 1 unit Instant ft (feet)
m (meters)
- - - - - -
Variometer - - 0.1 unit Instant m/s (meters per second)
hft/min (100 feet per minute)
- - - - - -
Compass 0 to 359° off N +/- 3° 1° Instant degrees off North
- - - - - -

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