태양광
측정 시스템 - SSR 11
(SOLAR
RADIATION MEASUREMENT : PYRANOMETER)
First class Solar Radiation sensor
SSR11 is a solar
radiation sensor that can be applied in scientific grade solar radiation
observations. It complies with the “first class” specifications within the
latest ISO and WMO standards. The scientific name of this instrument is
pyranometer.
Figure 1
SSR11 solar radiation sensor. (1) sensor, (2, 3) glass
domes, (5) cable, standard length 5 m, (9) dessicant.
Figure 2 SSR11 dimensions in mm. Standard cable
length is 5 m. Cable can be
installed / replaced by the user.
SSR11 serves to measure the solar radiation
flux that is incident on a plane surface in W/m2 from a 180 degrees
field of view (also called “global” solar radiation). Working completely
passive, using a thermopile sensor, SSR11 generates a small output voltage
proportional to this flux.
Employing two glass domes, certain
measurement errors are reduced; in particular thermal offsets, so that a high
measurement accuracy can be attained.
Using SSR11 is easy. For readout one only
needs an accurate voltmeter that works in the millivolt range. To calculate the
radiation level the voltage must be divided by the sensitivity; a constant that
is supplied with each individual instrument. SSR11 can directly be connected to
most commonly used datalogging systems.
SSR11 can be used for scientific
meteorological observations, building physics, climate- and solar collector
testing. A common application is for outdoor solar radiation measurements as
part of a meteorological station. This application requires horizontal
levelling; levelling feet (7) and a level (11) are included. The SSR11 cable can
easily be installed or replaced by the user.
Applicable standards are ISO 9060 and 9847,
WMO (World Meteorological Organisation), and ASTM E824-94. SSR11 can also be used
for stability estimations according to EPA ( EPA-454/R-99-005).
See also model SLP02
for lower accuracy measurements.
SSR11 SPECIFICATIONS
-
ISO classification: first class
-
Spectral range: 305 to 2800 nm
-
Sensitivity (nominal): 15 µV/ Wm-2
-
Temperature range: -40 to +80
oC
-
Temperature dependence: < 0.1%/°C
-
Calibration traceability: WRR
OPTIONS
- Additional cable length x metres (add to
5m),
- SAC100 / SAC420 amplifiers, SLI 18 hand held
readout.
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