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COMETEO Professional Multi-Plate Radiation Shield for Weather Sensors

Professional passive solar radiation shield for better protection of weather sensor, datalogger and barometers, naturally ventilated

"Not only radiation shield, but the complete COMETEO system minimizing negative effects"

Multiplate radiation shield is used to protect measuring devices and provides more accurate measurement results. The shield minimizes radiation reaching the sensor, minimizes radiation absorbed by the shield and maximizes ambient air flow around the sensor. The enlarged top plate „cap“ is 210mm in diameter and designed to provide shade for high solar angles for lower plates and also for full protection of measuring device placed underneath.

Works with COMET instruments - see OPTIONAL ACCESSORIES

Request your free COMETEO shield for six months evaluation.
If you are satisfied after testing you can buy the shield, otherwise return it.

  • code
    F8100

Technical data

Measured value

Temperature
Relative humidity
CO2
Atmospheric pressure

GENERAL TECHNICAL DATA

Temperature operating range -30 to +80 °C
Relative humidity operating range 0 to 100 %RH
Storage temperature range -30 to +80 °C
Storage relative humidity range 0 to 100 %RH (no condensation)
Dimension 220 mm (diameter), 250 mm (height)
Weight approx. 900 g
Material ASA - UV stabilized, antistatic
Warranty 3 years

Features

F8100
COMETEO is made of ASA plastic which is resistant to mechanical damage and UV radiation. ASA plastic is very stable over time.
F8100
Transmitter is entirely protected inside the radiation shield by maximized top cover area which provides advanced weather protection.

Air Temperature in Meteorology

The measurement of air temperature in meteorology is a difficult task. Accurate air temperature measurements require minimization of local effects (e.g. trees and buildings) and minimization of environmental effects that influence the actual sensing of the temperature at the position of the sensor. World Meteorological Organization - WMO defines internationally  the temperature of the air nearby the earth's surface as “the temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation” (WMO, 1992).

The main functions of thermometer shields are to protect the sensor from direct or indirect radiation from the sun during the day and from radiation from the sensor to the sky at night and to protect the sensor from wetting. Wetting of the sensor and screen is caused by fog, drizzle or rain. But protection against radiation and wetting conflicts with the requirement of sufficient ventilation. Due to insufficient ventilation a microclimate develops within the screen. In fact, all screens develop their own microclimate and the difference with the ambient climate depends on screen type and design.   It may be stated that the larger the bulk of a screen, the stronger the microclimate within the screen and the more the sensed temperature deviates from the real air temperature. From the above, it follows that thermometer screens should have a high reflectivity to minimize heating of the plates and subsequent warming of the air as it flows over the plates to the sensor. To decrease the time the air is in contact with the plate, the plate radial distance should be as small as possible. To prevent the development of microclimates within screens, also the blockage of ambient airflow by the screen should be minimized by making the plate spacing as large as possible, taking into account the requirement that wetting of the sensor should be prevented. Any design of a thermometer screen is a result of compromises. Finding the optimal design is a serious challenge that may require the use of different methods for studying the behavior of screens. In the field, the actual differences between the air temperature in the screens and the ambient air temperature depend mainly on the prevailing weather conditions. Furthermore, the state of the ground and humidity of the soil will also affect the air temperature in the screen as radiation or reflection will cause screen dependent biases. This can easily occur in areas with snow cover and in deserts.

Applications:

Applications - Metrology

Meteorology - COMET sensors together with COMET radiation shields are the ideal basis for weather stations for long-term weather, climate and air monitoring.

Applications - Snow Guns

Snow Guns

Application - HVAC

Building management - Our instruments which measure temperature, humidity, atmospheric pressure and CO2 are an integral part of these industry-leading solutions.

Optional accessories

Sensors

Industrial temperature and humidity transmitter - RS232 output

Industrial temperature and humidity transmitter - RS232 output

code T3319
Web sensor - remote thermometer hygrometer with Ethernet interface. Weather sensor for environment monitoring.

Web sensor - remote thermometer hygrometer with Ethernet interface. Weather sensor for environment monitoring.

code T3511
Industrial temperature, humidity, bar. pressure transmitter - RS232 output

Industrial temperature, humidity, bar. pressure transmitter - RS232 output

code T7311
Industrial temperature, humidity, bar. pressure transmitter - RS485 output

Industrial temperature, humidity, bar. pressure transmitter - RS485 output

code T7411
Web Sensor - remote thermometer hygrometer barometer with Ethernet interface

Web Sensor - remote thermometer hygrometer barometer with Ethernet interface

code T7511
Temperature and humidity duct probe with 0-10V output

Temperature and humidity duct probe with 0-10V output

code T0213D
Temperature and humidity duct probe with 4-20mA output

Temperature and humidity duct probe with 4-20mA output

code T3113D
Duct mount temperature probe 0 to +150°C / 4 to 20mA, IP65

Duct mount temperature probe 0 to +150°C / 4 to 20mA, IP65

code P0132
Temperature and humidity duct mount transmitter with RS485 output

Temperature and humidity duct mount transmitter with RS485 output

code T3413D
Web Sensor with PoE, duct mount - remote thermometer hygrometer barometer with Ethernet interface

Web Sensor with PoE, duct mount - remote thermometer hygrometer barometer with Ethernet interface

code T7613D
Temperature and humidity regulator

Temperature and humidity regulator

code H3021
Temperature and humidity regulator with 230Vac/8A relays

Temperature and humidity regulator with 230Vac/8A relays

code H3061
Thermometer hygrometer with Ethernet interface and relays

Thermometer hygrometer with Ethernet interface and relays

code H3531
Thermometer hygrometer barometer with Ethernet interface and relays

Thermometer hygrometer barometer with Ethernet interface and relays

code H7531
Temperature and humidity regulator with RS232 output

Temperature and humidity regulator with RS232 output

code H3331
Temperature and humidity regulator with RS485 output

Temperature and humidity regulator with RS485 output

code H3431

Dataloggers

GSM Temperature data logger for four external probes with built-in modem

GSM Temperature data logger for four external probes with built-in modem

code U0141M
GSM temperature data logger for two external probes and two two-state inputs with modem

GSM temperature data logger for two external probes and two two-state inputs with modem

code U0843M
GSM temperature and humidity data logger for external probe with built-in modem

GSM temperature and humidity data logger for external probe with built-in modem

code U3121M
Temperature and humidity data logger for external probe

Temperature and humidity data logger for external probe

code U3121
Temperature data logger for one external Pt1000 probe

Temperature data logger for one external Pt1000 probe

code U0111

Temperature probes

Temperature probe for COMEO Solar Shields F8x00, Pt1000TR160/0, without connector, cable 25 cm

Temperature probe for COMEO Solar Shields F8x00, Pt1000TR160/0, without connector, cable 25 cm

Temperature range: -30 to 80°C
code SN250V

Related products

COMETEO Professional Radiation Shield for Weather Sensors, actively ventilated with built-in fan

COMETEO Professional Radiation Shield for Weather Sensors, actively ventilated with built-in fan

code F8200
COMETEO Professional Universal Multi-plate Radiation Shield for Weather Sensors

COMETEO Professional Universal Multi-plate Radiation Shield for Weather Sensors

code F8110
Temperature and humidity duct probe with 4-20mA output

Temperature and humidity duct probe with 4-20mA output

code T3113D
Temperature and humidity duct probe with 0-10V output

Temperature and humidity duct probe with 0-10V output

code T0213D
Temperature and humidity duct mount transmitter with RS485 output

Temperature and humidity duct mount transmitter with RS485 output

code T3413D
Web Sensor with PoE, duct mount - remote thermometer hygrometer barometer with Ethernet interface

Web Sensor with PoE, duct mount - remote thermometer hygrometer barometer with Ethernet interface

code T7613D
Temperature and humidity probe with 0-10V output

Temperature and humidity probe with 0-10V output

code T0211
RH+T+Tdp cable probe, output 4-20mA

RH+T+Tdp cable probe, output 4-20mA

code T3111
Industrial temperature, humidity, bar. pressure transmitter - RS232 output

Industrial temperature, humidity, bar. pressure transmitter - RS232 output

code T7311
Industrial temperature, humidity, bar. pressure transmitter - RS485 output

Industrial temperature, humidity, bar. pressure transmitter - RS485 output

code T7411
Web Sensor - remote thermometer hygrometer barometer with Ethernet interface

Web Sensor - remote thermometer hygrometer barometer with Ethernet interface

code T7511
Duct mount temperature probe -30 to +80°C / 4 to 20mA, IP65

Duct mount temperature probe -30 to +80°C / 4 to 20mA, IP65

code P0122
Duct mount temperature transmitter with 0-10V output, stem length 120mm

Duct mount temperature transmitter with 0-10V output, stem length 120mm

code P0212
Temperature transmitter with 4-20mA output

Temperature transmitter with 4-20mA output

code T4111
Temperature transmitter with 0-10V output

Temperature transmitter with 0-10V output

code T4211
Temperature transmitter with RS232 interface

Temperature transmitter with RS232 interface

code T4311
Temperature transmitter with RS485 interface

Temperature transmitter with RS485 interface

code T4411
WebSensor - remote thermometer with Ethernet interface

WebSensor - remote thermometer with Ethernet interface

code T4511
Temperature Transmitter  Pt1000 -30°C to +80°C/ 4 to 20 mA

Temperature Transmitter Pt1000 -30°C to +80°C/ 4 to 20 mA

code P4121
Thermo-hygrometer with external probe, cable 1 meter

Thermo-hygrometer with external probe, cable 1 meter

Thermo-hygro-barometer with external probe

Thermo-hygro-barometer with external probe

code D4141
Ethernet Multilogger - thermo hygro meter with 4 MiniDIN inputs

Ethernet Multilogger - thermo hygro meter with 4 MiniDIN inputs

code M1140
GSM temperature and humidity data logger for external probe with built-in modem

GSM temperature and humidity data logger for external probe with built-in modem

code U3121M