DR15-A1 pyrheliometer

DR15-A1 analogue spectrally flat Class A pyrheliometer

DR15 pyrheliometers and SR15 pyranometers fit on all common solar trackers

DR20 / DR15 pyrheliometers with superior window heating for the highest DNI data availability

DR20 / DR15 pyrheliometer with its IP67 cable connector for use in all environments and weather conditions

Analogue spectrally flat Class B pyrheliometer, with heating

DR15 pyrheliometer is an ISO 9060 spectrally flat Class B (old ISO classification “first class”) instrument. It replaces the models DR01, DR02 and DR03. DR15 is used in tracker-mounted operation, and offers analogue millivolt output. The instrument offer the highest accuracy and highest data availability, featuring window heating at low offsets. At the same heating power, the heating has been improved with a factor 4, at a 4 times lower offset! Also take a look at the spectrally flat Class A DR20 pyrheliometer, with a better temperature response than DR15.

Specifications

Measurand

direct solar radiation

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Specifications
Description
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Specifications

Measurand

direct solar radiation

ISO classification

spectrally flat Class B

Calibration uncertainty

< 1.2 % (k = 2)

Heating

included

Heater

1 W at 12 VDC

Response time (95 %)

Full field of view angle

5 °

Slope angle

1 °

Zero offset a (5K/hr)

< ± 1 W/m²

Calibration traceability

to WRR

Spectral range

200 to 4000 x 10⁻⁹ m

Rated operating temperature range

-40 to +80 °C

Temperature response

< ± 1 % (-10 to +40 °C)

Calibration certificate

included

Temperature response test of individual instrument

no report included for DR15. See DR20 pyrheliometer

Cable length

Downloads

DR15-A1 pyrheliometer brochure

DR15-A1 pyrheliometer user manual

Description

Hukseflux model DR15 pyrheliometer is an ISO 9060 spectrally flat Class B (old ISO classification “first class”) instrument

DR15 pyrheliometers are applied in high-accuracy measurements of the solar radiation received by a plane surface from a 5 ° full field of view angle. This quantity, expressed in W/m², is called “direct” solar radiation or DNI (direct normal irradiance). It is necessary to keep the instrument pointed at the sun by using a two-axis tracker.

DR30 / DR20 / DR15 pyrheliometer with superior window heating for the best DNI solar data

The pyrheliometer features a precision ground and polished quartz window, a compact sized collimated tube and a thermopile sensor with black coated surface. DR15-A1 offers analogue output in millivolts. It can be connected directly to commonly used data logging systems. High data availability is attained by heating of the front window. This suppresses dew and frost deposition at a very low power consumption: DR15 needs only 1 W to keep its window free from dew and frost.

DR20 / DR15 pyrheliometer aimed at the sun

DR15 complies with the Class B specifications of the ISO 9060:2018 standard. Each DR15 pyrheliometer is supplied with test results for the individual instrument: