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Mechanical:
Instrument dimension i x L: 89 x 390mm
Instrument mass 3 kg
Control box dimensions H x L x W: 300 x 250 x 160 mm
Control box mass 8.250 kg + cables
Cable length 10 m to instrument, <30 m to PC and mains
Electrical:
Power requirement 85 ... 264 VAC, 40..400 Hz, 20 W max
Serial data link RS232, 9600 baud, 8/1/0 bits
B 5.3 EKO Instruments MS-110A Sunphotometer
The EKO Sunphotometer is designed to determine atmospheric turbidity by measuring the attenuation
of direct solar radiation at a defined spectral band. The sunphotom eter sensor is mounted on a 2-axis
tracking mechanism for fully automatic operation. Direct solar radiation that passes through the incidence
part of the instrument is separated into several spectral components by interference filters mounted on
a filter wheel, which is then detected by a silicon photodiode sensor that emits a current proportional to
the spectral component, the later conversion to a voltage output by an I=V converter.
Specifications
Aperture angle 2.3°
Slope angle 0.8°
Certified accuracy +/- 1.0% (as per calibration against reference instrument)
B 5.4 Yankee Environmental Systems Model SPUV Sunphotometer
Instrument Design: The interference filters used in this instrument have exceptional long-term stability
and out-of-band rejection properties. The filters and detectors are located in a thermally controlled enclosure
and are held at a constant temperature so that they do not experience thermal cycling due to day-night
temperature variation. In addition, the design incorporates solar energy absorbing pre-filters on UV channels
to minimize the amount of out–of-band energy that those filters are exposed to during operation.
Specifications
Wavelengths Standard configuration includes choice of any six or ten of the following wavelengths:
300, 305.5, 311.4, 317.5, 325.5, 332.5, 368, 500, 615, 673, 778, 870, or 940 nm (UV
filters: 2 nm FWHM bandpass; visible filters: 10 nm FWHM)
Field of view Opening angle of 2.5°
Temperature range +/- 50 °C
Signal output Analog outputs 0-4 VDC low impedance, single-ended, interfaces
to YESDAS datalogger
Dimensions L x D 285 x 175 mm
Weight 5 kg
Power input +11 to 14 VDC, @2A - startup; drops to 1A typical
Tracker The base plate of the SPUV adapts to most solar trackers
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