Kipp&Zonen BSRN Scientific Solar Monitoring System - Manual (Page 121)

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Mechanical:
Instrum ent dim ension i x L: 89 x 390m m
Instrum ent m ass 3 kg
Control box dim ensions H x L x W : 300 x 250 x 160 m m
Control box m ass 8.250 kg + cables
Cable length 10 m to instrum ent, <30 m to PC and m ains
Electrical:
Power requirem ent 85 ... 264 VAC, 40..400 Hz, 20 W m ax
Serial data link RS232, 9600 baud, 8/1/0 bits
B 5.3 EKO Instrum ents MS-110A Sunphotom eter
The EKO Sunphotom eter is designed to determ ine atm ospheric turbidity by m easuring the attenuation
of direct solar radiation at a defined spectral band. The sunphotom eter sensor is m ounted on a 2-axis
tracking m echanism for fully autom atic operation. Direct solar radiation that passes through the incidence
part of the instrum ent is separated into several spectral com ponents by interference filters m ounted on
a filter wheel, which is then detected by a silicon photodiode sensor that em its a current proportional to
the spectral com ponent, 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 instrum ent)
B 5.4 Yankee Environm ental System s Model SPUV Sunphotom eter
Instrum ent Design: The interference filters used in this instrum ent have exceptional long-term stability
and out-of-band rejection properties. The filters and detectors are located in a therm ally controlled enclosure
and are held at a constant tem perature so that they do not experience therm al cycling due to day-night
tem perature variation. In addition, the design incorporates solar energy absorbing pre-filters on UV channels
to m inim ize the am ount of out–of-band energy that those filters are exposed to during operation.
Specifications
W avelengths 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 FW HM bandpass; visible filters: 10 nm FW HM)
Field of view Opening angle of 2.5°
Tem perature range +/- 50 °C
Signal output Analog outputs 0-4 VDC low im pedance, single-ended, interfaces
to YESDAS datalogger
Dim ensions L x D 285 x 175 m m
W eight 5 kg
Power input +11 to 14 VDC, @ 2A - startup; drops to 1A typical
Tracker The base plate of the SPUV adapts to m ost solar trackers