Bức xạ kế hồng ngoại Campbell Scientific SI-111

Thương hiệu: Campbell Scientific | Tình trạng: Còn hàng
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Bức xạ kế hồng ngoại Campbell Scientific SI-111

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Bức xạ kế hồng ngoại Campbell Scientific SI-111

Overview

The SI-111, manufactured by Apogee, is a precision infrared radiometer that determines the surface temperature of an object without physical contact. It measures both the subject's surface temperature and the sensor-body temperature. A Campbell Scientific datalogger uses these measurements to calculate the correct temperature of the subject.

Benefits and Features

Compatible with most Campbell Scientific dataloggers

Measures surface temperature continuously in the field

Provides road surface, plant canopy, soil surface, snow surface, and water surface temperature measurements

Avoids influencing the temperature providing more accurate measurements

Ideal for providing spatial averages

Rugged construction—two temperature probes housed in an aluminum body with a germanium window

Detailed Description

The SI-111 consists of a thermopile, which measures surface temperature, and a thermistor, which measures sensor body temperature. The two temperature sensors are housed in a rugged aluminum body that contains a germanium window.

Both the thermopile and the thermistor output a millivolt signal that most of our dataloggers can measure. The datalogger uses the Stefan-Boltzman equation to correct for the effect of sensor body temperature on the target temperature. The corrected readings yield an absolute accuracy of ±0.2°C from -10° to 65°C.

Specifications

Input Power 2.5 V excitation (for thermistor)
Response Time < 1 s (to changes in target temperature)
Target Temperature Output Signal 60 μV per °C difference from sensor body
Body Temperature Output Signal 0 to 2500 mV
Optics Germanium lens
Wavelength Range 8 to 14 μm (corresponds to atmospheric window)
Field of View (FOV) 22° half angle
Operating Temperature Range -55° to +80°C
Operating Relative Humidity Range 0 to 100% RH
Cable Description 4.5 m (14.76 ft) twisted, shielded 4-conductor wire with Santoprene casing, ending in pigtails
Absolute Accuracy
  • ±0.2°C (-10° to +65°C)
  • ±0.5°C (-40° to +70°C)
Uniformity
  • ±0.1°C (-10° to +65°C)
  • ±0.3°C (-40° to +70°C)
Repeatability
  • ±0.05°C (-10° to +65°C)
  • ±0.1°C (-40° to +70°C)
Diameter 2.3 cm (0.9 in.)
Length 6 cm (2.4 in.)
Weight 190 g (6.7 oz)

Download

Brochures

SI-111 (IRR-P) Precision Infrared Radiometer

Manuals

SI-111 (IRR-P) Precision Infrared Radiometer

 

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