Pessl Instruments iMETOS 3.3 User Manual Download Page 2

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YOUR iMETOS 3.3 

BASIC COMPONENTS INCLUDED

•  1x Standard iMETOS casing
•  1x Battery 6V 4.5Ah
•  1x Solar panel 1.5W
•  2x Brackets
•  1x Cable tie
• 

1x Rain gauge filter

• 

12x leaf wetness filter paper (optional)

•  1x Cross arm for wind speed and wind direction (optional)

iMETOS IMT280

1. Temperature and 
relative humidity sensor 
with radiation shield;

2. Global radiation sensor; 

3. Dual antenna (GPS/
communication);

4. Rain gauge;

5. Logger and modem;

6. Power supply (solar panel  
and battery);

7. Wind speed sensor.

MAIN VARIATIONS:

•  iMETOS IMT80

: Air Temperature sensor and Rain Gauge. 

•  iMETOS IMT180

: Air Temperature and Relative humidity sensor, Rain 

Gauge.

•   iMETOS  IMT200

: Sensors for the calculation of most Disease Models: 

Air Temperature and Relative Humidity, Rain Gauge and  

 

Leaf Wetness.

•   iMETOS  IMT280

: Rain Gauge and all the sensors for Evapotranspira-

tion calculation: Air Temperature and Relative Humidity, Global Radi-
ation and Wind Speed.

•  iMETOS IMT280US

: Rain Gauge and all the sensors for Evapotran-

spiration calculation: Air Temperature and Relative Humidity, Global 
Radiation and mechanical Wind Speed. IMT280US includes Ultrason-
ic Wind speed and direction.

•   iMETOS  IMT300

: Sensors for Evapotranspiration and Disease Mod-

els calculation: Air Temperature and Relative Humidity, Rain Gauge, 
Global Radiation, Wind Speed and Leaf Wetness.

•  iMETOS IMT300US

: Sensors for Evapotranspiration and Disease 

Models calculation: Air Temperature and Relative Humidity, Rain 
Gauge, Global Radiation, Wind Speed and Leaf Wetness. IMT300US 
includes Ultrasonic Wind speed and direction.

INSTALLING YOUR iMETOS 

 

 

TOOLS REQUIRED FOR SETTING UP:

•  Head screwdriver
•  2x Wrenches 13 mm or adjustable wrench
•  Big hammer to set the metal pole
•  Level 
•  Compass

50 cm

Ø48.2 mm

Ø42.4 mm

50 cm

Ø48.2 mm

Ø42.4 mm

50 cm

Ø48.2 mm

Ø42.4 mm

1. 

2. 

150 cm

3. 

1. Set the 48.2 mm mounting metal pole for at least 50 cm into the ground, 

keeping the pole as vertical as possible using a level. Hammer the metal 
pole, keeping it protected with a piece of wood.

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