Apogee Aspirated Radiation Shield

The TS-100 is a low power aspirated shield for accurate measurement of air temperature and humidity.

The unique design and cutting-edge low-power fan make it the first research-grade fan aspirated radiation shield that is practical for use on battery or solar powered stations.

Due to power limitations, remote stations have typically been restricted to using less accurate, naturally aspirated shields. These shields can cause measurement errors of 1 C to 10 C in low-wind and high solar-load conditions. The TS-100 solves this problem, allowing researchers to finally make the most accurate measurements no matter the location.


  • Research Grade Accuracy - Tests have shown the TS-100 compares favorably (+/- 0.02 C) to the high-power aspirated shields from other suppliers in all conditions. Each unit comes with an included precision thermistor providing a measurement uncertainty of ±0.1 C.
  • Low-Power Fan - The TS-100 features an adjustable high-efficiency fan drawing only 80 mA (one-Watt; 12 VDC) on full power, and can be turned down to 28 mA (0.3 Watts) using pulse width modulation (PWM) at night without affecting accuracy.
  • New-Age Shape - The unique geometry of the TS-100 enhances the natural aspiration of the unit eliminating the need for a large fan. The coanda-style inlet and inner venturi contour allow efficient airflow in both high-winds and still air. This saves power and reduces maintenance by minimizing ingress of dust and debris.
  • Durability - The TS-100 is built for long-term performance in all climates, from arctic, to desert, to maritime conditions. The housing is cast from rugged Geloy plastic, while the internal fan has an Ingress Protection Rating of 55 (IP55). All internal spaces are filled with insulating foam to minimize heat transfer and increase field ruggedness. 
  • Sensor Compatibility - In addition to the standard included thermistor, the TS-100's sensor port can accommodate various combinations of other thermistors, PRTs, and humidity probes using one of the adaptor plugs. Port adaptors are available for the Apogee model ST-110 precision thermistor, Apogee model ST-300 PRT, Campbell Scientific model CS215, Vaisala models HMP110 and HMP60, and the Rotronic HC2-S.

About the manufacturer

Apogee manufacture a specialised range of sensors for biophysical studies including light sensors, oxygen and surface temperature (IR) sensors.

All Apogee products are covered by an industry-leading four-year warranty against failure due to defects in materials and workmanship.


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Meteorological Technology International article

File Size 1.29MB   Filename ts100-article-meteo-tech-intl-august-2014.pdf   Download

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Apogee Thermistor & PRT Temperature Sensors

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