Eppley Total Ultraviolet Radiometer

US $800

  • Sylvania, Ohio, United States
  • Jun 2nd
Model TUVR The Total Ultraviolet Radiometer is a rugged, relatively simple detector for the measurement of solar UV radiation. Ease of operation combined with performance accuracy comparable with pyranometers intended for the recording of the total short-wave radiation (0.295 to 0.385 µm) make this instrument an attractive instrument for UV measurement. This instrument utilizes a hermetically sealed selenium barrier-layer cell which is protected by a quartz window. It is operated at low light levels and under conditions of minimum electrical current drain, in order to ensure a high degree of performance stability over lengthy periods of exposure. A specially designed teflon diffuser not only reduces the radiant flux to acceptable levels but also provides close adherence to the Lambert cosine law. An encapsulated narrow bandpass (interference) filter limits the spectral response of the photocell to the wavelength interval 0.295 to 0.385 µm, with negligible secondary transmission. The unit is of brass construction and includes adjustable leveling screws and a circular spirit level . SPECIFICATIONS Sensitivity: approx. 150 µV/Wm-2. Impedance: approx. 1500 Ohms. Temperature Dependence: ±0.3% / °C over ambient temperature range -40 to +40°C. Linearity: ±2% from 0 to 70 Wm-2. Response time: milliseconds. Cosine: ± 3.5 % from normalization 0-70° zenith angle. Mechanical Vibration: tested up to 20 g's without damage. Calibration: reference Eppley secondary standard group of UV Radiometers. Size: 5.75 inch diameter, 6.75 inches high. Weight: 6 pounds.

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