pyrheliometer

A pyrheliometer is often used in the same setup with a pyranometer.

A pyrheliometer is an instrument for direct measurement of solar irradiance.

Sunlight may be recorded using a sunshine recorder, pyranometer or pyrheliometer.

He proposed the designs of actinometer and pyrheliometer, which would be used by the Russian weather stations for a long time.

The pyrheliometer is mounted on a power-driven equatorial mount for continuous readings.

It was on the same mount as the pyrheliometer, so that it would automatically point in the same direction.

Using a very simple pyrheliometer he developed, he obtained a value of 1228 W/m2, very close to the current estimate.

An improved water-flow pyrheliometer and the standard scale of solar radiation (1932 with Abbot)

Two flanges, one at each end of the tube, are provided with a sighting arrangement for aiming the pyrheliometer directly at the sun.

A filter wheel pyrheliometer using Schott glass filters is used for discrete manual observations under clear skies.

An Abbot silver-disk pyrheliometer was placed on the platform outside the observatory tunnel to measure the solar irradiance.

A solar telescope or coelostat at the mouth of the tunnel passed sunlight to a spectrograph, an Ångström compensation pyrheliometer and a bolometer further in.

Active cavity radiometer - electrically self-calibrating, cavity pyrheliometer used to measure total and spectral solar irradiance.

They are also used widely in heat flux sensors (such as the Moll thermopile and Eppley pyrheliometer) and gas burner safety controls.

Typical pyrheliometer measurement applications include scientific meteorological and climate observations, material testing research, and assessment of the efficiency of solar collectors and photovoltaic devices.

Pyrheliometer measurement specifications are subject to International Organization for Standardization (ISO) and World Meteorological Organization (WMO) standards.

One Solar active cavity pyrheliometer The total detectors measure radiation in the 0.2 - 50.0 micron wavelength band, and the shortwave detectors measure radiation in the 0.2 - 5.0 micron band.

The aim of the International Pyrheliometer Comparisons which take place every 5 years at the World Radiation Centre in Davos is to ensure the world-wide transfer of the World Radiometric Reference.

The Eppley Normal Incidence Pyrheliometer is a World Meteorological Organization First Class Pyrheliometer designed, as its name implies, for the measurement of solar radiation at normal incidence.

In 1995 the GMD references were taken to the World Radiation Center in Davos, Switzerland, for participation in the WMO sponsored eighth International Pyrheliometer Comparison (IPCVIII).