Campbell IR100 Information - page 2

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© 2012

Campbell Scientific

 August 7, 2013

Specifications

Field of View (half angle):   IR100: 4-5°

IR120: 20°

Dimensions: 

92 mm long by 28 mm diameter

Fitted with two 6 mm threaded

   mounting 

holes.

Response Time:    

<1 second to changes in target

   temperature

Target Output Signal:  

IR100: 5 mV per °C

IR120: 20 mV per °C

(difference from sensor body)

Signal Offset: 

Removed by calibration (supplied)

Typical Noise Level as measured by a CS datalogger:

IR100: 0.2°CRMS

   IR120: 

0.05°C RMS

Wavelength Range: 

IR100: effective bandwidth                   

(see the graphs below)

7-14 µm (some sensitivity from 2-6 µm)

IR120: 8 to 14 µm

Calibrated  Range:  

-25°C below body temperature to  

   +25°C above body temperature

Operating Range:  

-25°C to +60°C

Accuracy over Calibrated Range:

±0.2°C (against a blackbody source   

   over 

a 

50°C temperature span under  

   laboratory 

conditions) 

Current Consumption:  0.4 mA (when excitation applied),      

   0 

mA 

quiescent 

Sensor output impedance:  320 Ω

Thermopile Excitation Voltage:  +2 to +3.5V

Thermistor Excitation Voltage:  -2.5V

Options:      IR-SS Solar radiation shield

     IR-SS Solar radiation shield (with optional pole band    

     clamp)

     009905 IR1x0 Mounting Arm (0.9 m long)

Sensor mounted in the IR-SS Solar Sensor 

Shield fitted to an 009905 mounting arm

The IR-SS is designed to protect the sensor from rapid changes of temperature 

caused by direct exposure to the sun which can lead to transient errors in 

temperature measurement. It can reduce direct heating of the sensor by the sun by 

as much as 10°C. It also gives some protection from exposure to rain and snow. The 

IR-SS is made from high grade UV stable plastic and has plastic mounting fittings 

internally to prevent heat conduction with the outside of the tube. It has a 6 mm 

threaded stainless steel mounting hole.

A mounting arm (009905) is available to hold the sensor out from the side of a 

Campbell Scientific instrument tripod or tower. The sensor can be mounted directly 

on this arm or for best accuracy when it is fitted inside an IR-SS Solar Shield.

An IR-SS fitted to a pole with an optional band 

clamp fitting