Hukseflux thermal sensors and radiometer products are deployed in greenhouses and meteorological monitoring networks worldwide for routine solar and soil energy balance measurement, wherever accuracy and reliability are required. See reference users for application use and applicable sensor products.

Meteorology, Solar & Soil
Hukseflux offers a broad range of thermal sensors for geophysical science analysis. Such sensors are used for quantifying thermal properties influencing the Earth's energy balance (i.e. solar insolation and infrared radiation) and impacting climate processes, including soil thermal properties and soil energy balance. The solar radiometer line includes sensors for measuring global and surface reflected/emitted short-wave solar and long-wave infrared radiation. The soil thermal properties product range includes sensors for determining soil heat flux, soil gradient temperature profile, and soil thermal conductivity/resistivity

Solar Radiation Measurement
The dominant energy component driving the Earth's climate process and energy balance is the short-wave radiation emanating from the Sun, otherwise known as Direct Solar Radiation. Direct solar radiation concentration at the top of the atmosphere (non-attenuated) is defined as the Solar Constant, approximately 1366 W/m². Within the Earth's atmosphere a portion of the Sun's direct beam energy component is scattered, absorbed and/or reemitted in the form of Infrared radiation by gases, aerosols and water vapor within the atmosphere. The scattered short-wave solar radiation component is known as Diffuse Radiation. It is the sum of the Direct and scattered Diffuse radiation components which comprise the total incoming Global Solar Irradiance energy irradiating the Earth's Surface, also known as Solar Insolation.

The most commonly used instrument for measuring Solar Insolation, or Global Solar Irradiance, is a pyranometer. The Hukseflux SR11 Pyranometer and LP02 Pyranometer models are ideally suited for Global Diffuse and total Global Solar Insolation measurement research.

For ultimate measurement accuracy of the dominant DNI (Direct Normal Incidence) short-wave solar irradiance component arriving at the Earth's surface, the Hukseflux DR01 and DR02-FR Pyrheliometer models are the instruments of choice. The DR01 and DR02-FR require continuous pointing into the Sun via a two-axis autonomous solar tracker/positioner (see MiniTrak II Solar Tracker). For solar concentrator renewable energy measurement applications, also see Hukseflux SBG01 Schmidt-Boelter gauge/sensor series.

Reemitted IR (Infrared Radiation) by the Earth's atmosphere and surface, or net IR energy exchange within the Earth's atmosphere, can be quantified using a pyrgeometer; see Hukseflux IR02 Pyrgeometer.

The Hukseflux NR01 Four-Component Net Radiometer is the most cost effective research grade instrument solution available for deriving all four constituent short and long-wave radiation components comprising the Earth's energy balance, otherwise known as global energy balance. The economically priced RA01 Total Global Radiometer model is similar in construction to the NR01 model, however employs two radiometers (i.e. pyranometer and pyrgeometer) on one side only. The RA01 can be mounted either upward or down facing, depending on the measurement application.

Soil Thermal Measurement
The Hukseflux HFP01 and HFP01SC Heat Flux Sensor models are the most popular selling heat flux sensors world-wide, commonly deployed in meteorological and Bowen Ration monitoring systems where accurate soil energy balance determination are required.

The Hukseflux STP01 Soil Temperature Sensor is intended for continuous high accuracy temperature gradient profile measurement within soil at multiple soil depths, and is also optionally capable of determining soil thermal conductivity as a function of soil depth due to an integrated heating element within the sensor.

Miscellaneous Meteorological Measurements
The Hukseflux WS01 Boundary Layer Conductance Sensor is suitable for continuous outdoors boundary layer conductance (i.e. heat transfer coefficient analysis occurring between the sensor's surface and surrounding air). Additional transfer coefficients such as water vapor transport or local low level wind speed are also possible, intended for qualitative measurement assessment.