Model 095 Pyranometer

Solar energy is a significant element in large-scale atmospheric motion, and as a result, it has an important place in meteorology. It is directly related to atmospheric stability, and is used in determining stability classes for pollution studies. Met One Instruments supplies solar sensors to meet virtually any monitoring requirement.

Operation

The Model 095 Pyranometer incorporates a multi-junction differential thermopile and a precision ground optical glass hemisphere which is transparent to wavelengths 0.285 to 2.80 microns. It is used for high precision, broad band-width measurements of incident solar radiation.

Construction

The detector element is of wirebound-plated construction with black and white segments. When exposed to solar radiation, the differing absorptivity of the black and white surfaces develops a temperature differential. The thermopile then produces a voltage proportional to the solar radiation. Built-in thermistor circuitry is incorporated to eliminate the effects of ambient temperature.

The single hemispherical optical glass dome has a waterproof seal, but can easily be removed for repairs. The case is cast aluminum, painted white, and is fitted with a desiccator, circular level, and leveling screws. A mounting base with a vertical 3/4” IPS pipe simplifies field installation of the sensor. This rugged instrument is capable of withstanding mechanical vibrations of up to 20 G’s.

Features

  • Differential thermopile detector
  • High accuracy, broad bandwidth
  • Temperature compensated
  • Rapid response time
  • Built-in leveling devices

Specifications

Precipitation Gauges
Spectral Response: Nanometers: 285 – 2800
Microns:0.28 – 2.8
Calibration: Integrating hemisphere approx. 1 cal cm-2 min-1, at 25°C
Sensitivity**:: 11 mV/kwatt meter-2, approx
Impedance: 350 ohms, approx
Temperature Depend: ±1.5% constancy from -20°C to +40°C
Linearity: ±1% from 0 to 1400 watts meter-2
Response Time: 5 second (1/e signal)
Cosine Response: ±2% from normalization 0°-70° zenith angle; ±5% 70°-80° zenith angle
Dimensions: 5.75 in (14.6 cm) diam.
21 in (53.4 cm) h, including mount
Weight: 4 lbs (1.8 kg), including mount
Mounting: Leveling plate and mounting base included.
Requires PN 1552 fitting or similar device.
**Sensitivity varies among sensors of the same type. A calibration certificate is supplied with each sensor.

Specifications are subject to change at any time