태양광
측정 시스템 - SNR 01
(SOLAR
RADIATION MEASUREMENT : PYRANOMETER)
4 component net-radiation sensor
SNR01 is a 4-component net-radiation
sensor that is used for scientific-grade energy balance studies. The instrument
has separate measurements of solar (Short Wave or SW) and Far Infra-Red (Long
Wave or LW) radiation. Major improvements relative to comparable instruments
include weight (reduced), solar offsets in the LW signal (reduced), ease of
leveling (high, because levelling assembly is included).
Figure 1 SNR01 4-component net radiation sensor. SW solar radiation sensor or pyranometer (1), LW Far
Infra-Red radiation sensor or pyrgeometer (2), radiation shield (3), levelling
assembly for x- and y axis (4, 5 and 8).
Figure 2 SNR01 top view. Standard cable length is
5 m. Cable can be installed
/ replaced by the user. Attachement to a 1 inch tube is extremely easy,
levelling possibilities are included. Dimensions in mm.
INTRODUCTION
SNR01 serves to measure the 4 separate
components of the surface radiation balance. Working completely passive, using a
thermopile sensors, SNR01 generates 4 small output voltage proportional to the
incoming and outgoing SW and LW fluxes. The SW solar radiation sensors are also
called pyranometers, the LW sensors are also called pyrgeometers. For
calculation of sky- and surface temperature, a Pt100 temperature sensor is
included in the pyrgeometers.
In order to avoid deposition of dew, the
pyrgeometers may be heated. A 2-axis levelling assembly is
included.
The SNR01 cable can easily be installed or replaced by the user. See also
SRA01 radiameter on the next page, which is a single side
version of SNR01. Combined with estimates of SW albedo- and of surface
temperature, this instrument can also be used for estimation of net-radiation.
For a single pyrgeometer see also SIR02.
SNR01 SPECIFICATIONS
General:
-
Temperature range: -40 to +80
oC
-
Temperature sensor: Pt100
-
Temperature sensor: users own preference
can be plugged in
Pyranometer (SW):
-
Pyranometer ISO classification: second
class
-
Spectral range: 305 to 2800
nm
-
Calibration traceability: WRR
Pyrgeometer (LW):
-
Spectral range: 4500 to 50000 nm
-
Calibration traceability: NIST
- Window heating offset @ 1000 Wm-2
solar radiation: <15 Wm-2
-
heating power: 5 Watt @12VDC
OPTIONS
Additional cable length x
metres (add to 5m)
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