SR15-D1 Pyranometer

Options

• Spring leveling; convenient for easy mounting, leveling and exchanging of instruments on flat surfaces (LM01)
• Tube leveling bracket with bolt set (TLM01)
• PMF01 bracket for inclined installations
• Longer cable; 10 and 20 meter lengths
• 20 meter extension cable with 2 connectors

What is measured
The sensors in our pyranometer product line measure solar or “shortwave” radiation. Essentially, they measure the flux of radiative energy on or through a surface in [W/m²]. The most common parameters we measure are:

Solar radiation, most commonly measured horizontally – Global Horizontal Irradiance, GHI, measured with a pyranometer
Outdoor solar radiation, solar radiation reflected from the ground – measured with a ground-facing pyranometer, which also measures albedo and net radiation, when combined with GHI.

The sensors in our pyrgeometer product line measure “longwave” far-infrared radiation. The most common parameters we measure are:

Downward longwave radiation
Upward solar radiation

These 4 measurements combined are used to calculate net radiation.

HFP01 heat flux plate and its self-calibrating equivalent HFP01SC are the de-facto standards for soil heat flux measurement. In high-accuracy flux measurement a typical station is equipped with two or more sensors for good spatial averaging.

STP01 soil temperature profile sensor offers highly accurate temperature gradient measurement, including a reliable fixed distance between five measurement points at 2, 5, 10, 20 and 50 x 10⁻² m below the soil surface.

TP01 is a simple, robust sensor to measure soil thermal conductivity. In combination with STP01 and HFP01SC it offers a redundant measurement and allows users to verify the measurement accuracy of soil heat flux. In addition, TP01’s capability to perform a crude measurement of soil thermal diffusivity offers an independent possibility to verify performance of soil moisture content sensors.