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Aspirated Radiation Shield

Attention: The wiring colors for connecting our sensors to dataloggers have changed as of March 2018. Please consult the appropriate manual, VIEW our new wiring guide, or CLICK HERE for a downloadable version.

Accurate measurement of air temperature
Apogee Instruments’ fan-aspirated radiation shield works with several temperature and humidity sensors to provides research-grade measurements with minimal power consumption. It is ideal for solar-powered sites.
Rugged, Low Power Fan
The fan has an ingress protection (IP) rating of 55, virtually eliminating moisture and dust ingress. At full speed the power requirement is 1 W (80 mA at 12 V DC). To conserve power fan speed can be reduced, via pulse width modulation (PWM), to 0.3 W at night or when wind speed is greater than 3 m s-1 without loss of accuracy. If the fan is continuously operated at full speed lifetime is rated at 50,000 hours (5.7 years). The fan includes a tachometer, allowing RPM to be mounted to detect obstruction of the fan.
Aerodynamic Shape
The curved inlet facilitates the reduction of air into the shield through the Coandã effect (tendency of fluid to follow a convex surface). The tapered diameter of the internal surface enhances air velocity through the Venturi effect (reduction in fluid pressure after flowing through a constriction). Both effects contribute to more efficient air flow and allow for a lower power fan than other fan-aspirated radiation shields on the market.
Sensor Compatibility
Adapter plugs accommodate multiple sensors, including air temperature sensors like the Apogee ST-110 thermistor and Apogee ST-200 PRT (both with ± 0.1 C accuracy), and air temperature/relative humidity probes like the E + E EE08, Vaisala HMP60, HMP110, and HMP155, Campbell Scientific CS215, Rotronic HC2-S3*, or a combination of temperature sensor and relative humidity probe. For different probes, please contact us to discuss options. Click here to view the Sensor Port Options.
*If the Rotronic HC2-S3 probe is used with the E3 Active Set module, it must be water-proofed where the cable enters the housing. ATUM heat shrink can be used to seal the cable gasket.
Research Grade Accuracy
Extensive tests with replicate shields over the past three years have shown the TS-100 compares favorably (± 0.02°C) to all the higher-powered industry standard fan-aspirated shields. Using our recommended ST-110 precision thermistor provides a measurement uncertainty of ± 0.1 C.
Typical Applications
Applications include air temperature and humidity measurement in weather networks, often for weather forecasting, and solar energy sites. Fan-aspirated shields are also important in the precise measurement of air temperature and humidity gradients above the land surface and in climate change monitoring.
Purchasing Options
There are two models to choose from when purchasing the shield. The TS-100 is a shield only model. The TS-110 comes with a discounted, pre-installed ST-110 precision thermistor that provides ± 0.1 C uncertainty right out of the box.
Warranty and Support
All Apogee products are backed by an industry-leading four year warranty and outstanding customer support.

Product Manuals

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 TS-100
Shield Only
TS-110
ST-110 Thermistor Included
Difference Among Individual Replicate Shields Less than 0.1 C Less than 0.1 C
Aspiration Rate 6 m s-1 at full speed, 3 m s-1 at half-speed 6 m s-1 at full speed, 3 m s-1 at half-speed
Fan Input Voltage Requirement 10.8 to 13.2 V DC 10.8 to 13.2 V DC
Fan Current Drain 80 mA at full speed, 25 mA at half-speed 80 mA at full speed, 25 mA at half-speed
Fan Dust and Water Protection IP55 IP55
Dimensions 220 mm height, 270 mm diameter 220 mm height, 270 mm diameter
Mass 840 g 840 g

Solar Radiation Shields Overview

Air Temperature Measurement Sensors

Aspirated Radiation Shield

TS-100 Inlet Testing

Lecture 1-Air Temperature & Humidity

Tasmania: Ecological Research
Eight TS-100 shields used to provide air temperature measurements to monitor long-term ecological health dynamics within wet eucalyptus forest at the Warra long-term ecological research site (LTER).
Read More >
TS-100 at Utah State University
The USU weather station uses both an aspirated and static shield to monitor air temperature. A real-time graph on the site shows errors that occur when using static shields.
Read More >
TS-100 at Peter Sinks
TS-100 used on a weather station at a record-setting cold location-Peter Sinks, Utah.
Read More >

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TS-100 Aspirated Radiation Shield
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TS-100 Aspirated Radiation Shield (shield only)

$445.00
TS-110 Aspirated Radiation Shield
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TS-110 Aspirated Radiation Shield (thermistor included)

$495.00

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About Apogee Instruments, Inc.

Address:
721 West 1800 North
Logan, UT 84321
United States of America

Hours: Monday-Friday 8 AM- 5 PM MST
Main: (435) 792-4700
Tech Support: (435) 245-8012

Fax: (435) 787-8268

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  • products
    • Pyranometers
    • Quantum Sensors
    • Infrared Radiometers
    • Aspirated Radiation Shield
    • Spectroradiometers
    • Net Radiometer
    • Pyrgeometers
    • Temperature Sensors
    • Radiation Frost Detector
    • Oxygen Sensors
    • UV Sensors
    • Chlorophyll Concentration
    • Barometric Pressure
    • PAR Meters for Aquariums
    • Solar Energy PV Monitoring
    • Accessories
    • Calibration Services
  • About Us
    • Contact Us
    • Apogee News
    • Company History
    • Event Calendar
    • Staff Listing
    • International Distributors
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    • Our Founder - Dr. Bruce Bugbee
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