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COMETEO Professional Thermometer Screen for Weather Station Sensor

Professional radiation shield for protection of temperature sensors or combined temperature/humidity sensors, weather monitor and datalogger. Passive, naturally ventilated.

"Not only thermometer screen, but the complete COMETEO system minimizing measurement errors when used with high-quality certified sensors"

Multi-plate radiation shield is used to protect weather monitor systems and provides the most accurate climate measurement results. The uniquely designed screen minimizes solar radiation reaching the sensor, minimizes radiation absorbed by the screen and maximizes ambient air flow around the weather station sensor. The surface exposed to sunlight is made of highly reflective UV and long-term stable ASA plastic. The inner surfaces of the screen are made of matt black plastic to minimize internal reflections. Large 210mm diameter of 14 plates is designed to provide full protection of weather sensor.

Each of the fourteen black louvres is equipped with a circular slot allowing air to flow vertically through the entire radiation shield. The slot also separates the sunlit part of the louvre from the inner part and thus prevents heat transfer to the sensors.

Cylindrical space with 110mm diameter and 210mm height is available inside of the plates for installation of entire climate measuring device with minimized solar radiation.

Excellent wasp and bug deterrence. Sophisticated design prevents insects from building nests inside and thus degrading measurement.

Low cost stable replacement for Stevenson screen, taking advantage of reduced maintenance and better performance due to the low time constant compared to the traditional Stevenson screen.

Works with COMET instruments and most professional weather equipment.

  • code
    F8000

Technical data

GENERAL TECHNICAL DATA

Temperature operating range -40 to +65 °C
Relative humidity operating range 0 to 100 %RH
Storage temperature range -40 to +65 °C
Storage relative humidity range 0 to 100 %RH (no condensation)
Dimension 250 mm (diameter), 396 mm (height)
Dimensions of internal space 110 mm (diameter), 210 mm (height)
Weight approximately 2.4 kg (without mounting clamps)
Material UV stabilized ASA, stainless steel
Warranty 3 years

WIRED Compatible COMET transmitters

Measured Value / Output4-20mA0-10VRS232RS485Ethernet / PoE
Temperature P0120 P0210 T0310 T0410 T4611 *
SN200
Temperature + Relative Humidity T3110 T0210 T3311 T3411  T3611 *
Temperature + Relative Humidity + Atmospheric Pressure - - T7310 T7410  T7611 *

* Probe itself inside of the meteoshield, electronic device outside of the meteoshield in a separate watertight case

 

WIRELESS Compatible COMET Products

Measured Value / OutputSigfox IoTWiFi WLANGSM / GPRS
Temperature W0810
W0832
W0711 *
SN200C
U0110M
Temperature + Relative Humidity W3810 W3711 *
DIGIL/E-2
U3121M *
DIGIL/E-2
Temperature + Relative Humidity + Atmospheric Pressure W7810 - -

 * Probe itself inside of the meteoshield, electronic device outside of the meteoshield in a separate watertight case

 

 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 and download

Holder for 3.6 V lithium battery for mounting into Radiation shield COMETEO F8000

Holder for 3.6 V lithium battery for mounting into Radiation shield COMETEO F8000

code SP015C

IoT Wireless Temperature Datalogger for 2 external probes, with built-in GSM modem

IoT Wireless Temperature Datalogger for 2 external probes, with built-in GSM modem

code U0121M
IoT Wireless Temperature Datalogger for 2 external probes, with built-in GSM modem and Flat Rate SIM Card

IoT Wireless Temperature Datalogger for 2 external probes, with built-in GSM modem and Flat Rate SIM Card

code U0121Msim
IoT Wireless Temperature Datalogger for 4 external probes, with built-in GSM modem

IoT Wireless Temperature Datalogger for 4 external probes, with built-in GSM modem

code U0141M
IoT Wireless Temperature Datalogger for 4 external probes, with built-in GSM modem and Flat Rate SIM Card

IoT Wireless Temperature Datalogger for 4 external probes, with built-in GSM modem and Flat Rate SIM Card

code U0141Msim
IoT Wireless Temperature and Relative Humidity Datalogger for external probe, with built-in GSM modem

IoT Wireless Temperature and Relative Humidity Datalogger for external probe, with built-in GSM modem

code U3121M
IoT Wireless Temperature and Relative Humidity Datalogger for external probe, with built-in GSM modem and Flat Rate SIM Card

IoT Wireless Temperature and Relative Humidity Datalogger for external probe, with built-in GSM modem and Flat Rate SIM Card

code U3121Msim

Temperature data logger for one external Pt1000 probe

Temperature data logger for one external Pt1000 probe

code U0111
Temperature data logger for two external Pt1000 probes

Temperature data logger for two external Pt1000 probes

code U0121
Temperature data logger for four external Pt1000 probes

Temperature data logger for four external Pt1000 probes

code U0141
Temperature and humidity data logger for external probe

Temperature and humidity data logger for external probe

code U3121

Wireless thermometer with built-in sensor, Sigfox IoT

Wireless thermometer with built-in sensor, Sigfox IoT

code W0810
Wireless thermometer with built-in sensor, IoT Sigfox

Wireless thermometer with built-in sensor, IoT Sigfox

code W0810P
Wireless IoT thermometer for external probe, Sigfox

Wireless IoT thermometer for external probe, Sigfox

code W0811
Wireless thermometer with three-channels, IoT Sigfox

Wireless thermometer with three-channels, IoT Sigfox

code W0832
Wireless thermometer with three-channels, IoT Sigfox

Wireless thermometer with three-channels, IoT Sigfox

code W0832P
Wireless thermometer, hygrometer, Sigfox IoT

Wireless thermometer, hygrometer, Sigfox IoT

code W3810
Wireless thermometer, hygrometer, IoT Sigfox

Wireless thermometer, hygrometer, IoT Sigfox

code W3810P
Wireless thermometer, hygrometer for external probe, Sigfox IoT

Wireless thermometer, hygrometer for external probe, Sigfox IoT

code W3811
Wireless thermometer, hygrometer for external probe, IoT Sigfox

Wireless thermometer, hygrometer for external probe, IoT Sigfox

code W3811P
Wireless thermometer, hygrometer barometer, Sigfox IoT

Wireless thermometer, hygrometer barometer, Sigfox IoT

code W7810
Wireless thermometer, hygrometer, barometer for external probe, Sigfox IoT

Wireless thermometer, hygrometer, barometer for external probe, Sigfox IoT

code W7811

Web Sensor - one channel remote thermometer hygrometer

Web Sensor - one channel remote thermometer hygrometer

code P8511
Web Sensor - four channels remote thermometer hygrometer

Web Sensor - four channels remote thermometer hygrometer

code P8541
Web Sensor with PoE - one channel remote thermometer hygrometer

Web Sensor with PoE - one channel remote thermometer hygrometer

code P8611
Web Sensor with PoE - four channels  remote thermometer hygrometer

Web Sensor with PoE - four channels remote thermometer hygrometer

code P8641
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
Web Sensor with PoE - remote thermometer hygrometer with Ethernet interface

Web Sensor with PoE - remote thermometer hygrometer with Ethernet interface

code T3611
WebSensor - remote thermometer with Ethernet interface

WebSensor - remote thermometer with Ethernet interface

code T4511
WebSensor with PoE - remote thermometer with Ethernet interface

WebSensor with PoE - remote thermometer with Ethernet interface

code T4611
Web Sensor - remote thermometer hygrometer barometer with Ethernet interface

Web Sensor - remote thermometer hygrometer barometer with Ethernet interface

code T7511
Web Sensor with PoE - remote thermometer hygrometer barometer with Ethernet interface

Web Sensor with PoE - remote thermometer hygrometer barometer with Ethernet interface

code T7611

Economy  humidity and temperature transmitter with 4-20mA outputs

Economy humidity and temperature transmitter with 4-20mA outputs

code P3110E
Temperature transmitter outdoor, indoor with 4-20mA output

Temperature transmitter outdoor, indoor with 4-20mA output

code T0110
Temperature and humidity outdoor, indoor probe with 0-10V output

Temperature and humidity outdoor, indoor probe with 0-10V output

code T0210
Temperature and humidity probe with 0-10V output

Temperature and humidity probe with 0-10V output

code T0211
Temperature transmitter with RS232 output

Temperature transmitter with RS232 output

code T0310
Temperature transmitter with RS485 output

Temperature transmitter with RS485 output

code T0410
Relative humidity outdoor, indoor probe with 4-20mA output

Relative humidity outdoor, indoor probe with 4-20mA output

code T1110
Temperature and humidity outdoor, indoor probe with 4-20mA output

Temperature and humidity outdoor, indoor probe with 4-20mA output

code T3110
RH+T+Tdp cable probe, output 4-20mA

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

code T3111
Temperature and humidity probe with RS232 output, internal sensors

Temperature and humidity probe with RS232 output, internal sensors

code T3311
Industrial temperature and humidity transmitter - RS232 output

Industrial temperature and humidity transmitter - RS232 output

code T3319
RH+T+Tdp outdoor, indoor probe, RS485 interface

RH+T+Tdp outdoor, indoor probe, RS485 interface

code T3411
Temperature and humidity transmitter with external probe - RS485 output

Temperature and humidity transmitter with external probe - RS485 output

code T3419
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
Industrial temperature, humidity, barometric pressure transmitter - RS232 output. Weather sensor for environment monitoring with one of the best barometers.

Industrial temperature, humidity, barometric pressure transmitter - RS232 output. Weather sensor for environment monitoring with one of the best barometers.

code T7310
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 T7410
Industrial temperature, humidity, bar. pressure transmitter - RS485 output

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

code T7411

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
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
Thermometer hygrometer with Ethernet interface and relays

Thermometer hygrometer with Ethernet interface and relays

code H3531
Temperature transmitter with RS232 output

Temperature transmitter with RS232 output

code H4331
Temperature transmitter with RS485 output

Temperature transmitter with RS485 output

code H4431
Thermometer with Ethernet interface and relays

Thermometer with Ethernet interface and relays

code H4531
Thermometer hygrometer barometer with Ethernet interface and relays

Thermometer hygrometer barometer with Ethernet interface and relays

code H7531

Temperature sensor with 4-20mA output

Temperature sensor with 4-20mA output

code P0120
Temperature transmitter with 0-10V output, adjustable

Temperature transmitter with 0-10V output, adjustable

code P0210
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
Temperature Transducer  Pt1000 0°C to +150°C/ 4 to 20 mA

Temperature Transducer Pt1000 0°C to +150°C/ 4 to 20 mA

code P4131
Temperature Transducer Pt1000 -100°C to +30°C/ 4 to 20 mA

Temperature Transducer Pt1000 -100°C to +30°C/ 4 to 20 mA

code P4141
Temperature Transducer  Pt1000 0°C to +35°C/ 4 to 20 mA

Temperature Transducer Pt1000 0°C to +35°C/ 4 to 20 mA

code P4151
Temperature Transducer  Pt1000 0°C to +250°C/ 4 to 20 mA

Temperature Transducer Pt1000 0°C to +250°C/ 4 to 20 mA

code P4161
Temperature Transducer  Pt1000 0°C to +400°C/ 4 to 20 mA

Temperature Transducer Pt1000 0°C to +400°C/ 4 to 20 mA

code P4171
Temperature Transducer  Pt1000 -50°C to +50°C/ 4 to 20 mA

Temperature Transducer Pt1000 -50°C to +50°C/ 4 to 20 mA

code P4191
Temperature transducer with 0-10V output

Temperature transducer with 0-10V output

code P4211
Temperature Transducer  Pt100 -100°C to +200°C/ 4 to 20 mA

Temperature Transducer Pt100 -100°C to +200°C/ 4 to 20 mA

code P6181
Temperature Transducer  Pt100 -50°C to +50°C/ 4 to 20 mA

Temperature Transducer Pt100 -50°C to +50°C/ 4 to 20 mA

code P6191

Manuals

download-icon Instruction Manual
1.44 MB

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