:: Product Information

SIF-111: High Speed, Standard Field of View Infrared Radiometer


Product Description

The SIF-111 is a fast response model infrared radiometer with a 0.2 second response time. The analog sensor is un-amplified and has a voltage output. The sensor has a 22° half-angle field of view. Typical applications include plant canopy temperature measurement for use in plant water status estimation, road surface temperature measurement of determination of icing conditions, and terrestrial surface (soil, vegetation, water, snow) temperature measurement in energy balance studies.



Approximate Sensitivity

15 μV per C

Output from Thermistor

2500 mV excitation (typical, other voltages can be used)

Input Voltage Requirement

0 to 2500 mV (typical, depends on input voltage)

Calibration Uncertainty (-20 to 65 C)

0.2 C

Calibration Uncertainty (-40 to 80 C)

0.5 C

Measurement Repeatability

Less than 0.05 C

Stability (Long-term Drift)

Less than 2 % change in slope per year when germanium filter is maintained in clean condition

Response Time

0.2 s, time for detector signal to reach 95 % following a step change

Field of View

22° half angle

Spectral Range

8 to 14 μm atmospheric window

Operating Environment

-55 to 80 C; 0 to 100 % relative humidity (non-condensing)

Dimensions 23 mm diameter, 60 mm length

Mass 190 g (with 5 m of lead wire)


5 m of shielded, twisted-pair wire. Additional cable available in multiples of 5 m. Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions). Pigtail lead wires.


related products

Inquiry online

Dianjiang Group Limited
Add: Room 1510,15/F,New Commerce Centre, No.19 On Sum Street, Shatin, N.T., Hong Kong.
Tel: (852) 3690 1588   Fax: (852) 3690 1586
Email: Dianjiang_HK@yahoo.com.hk   Hongkong@Dianjiangtech.com
© Dianjiang Group Limited All Rights Reserved.