Instrument Expert
Original factory packaging
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Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Updated:2025-03-13
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User's Manual Technical Drawing
The SIF-1H1-SS 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 and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The unique geometry of the sensor gives a wide 32° half-angle field of view in the horizontal direction with a 13° half-angle field of view in the vertical direction. This enables the user to mount the sensor at shallower angles without seeing above the horizon while maximizing the area measured. Typical applications include plant canopy temperature measurement for use in plant water status estimation, phenotyping, phenomics, road surface temperature measurement of determination of icing conditions, and terrestrial surface (soil, vegetation, water, snow) temperature measurement in energy balance studies. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration. The SIF-1H1-SS is designed to be mounted with an Apogee AM-250 commercial-grade mounting bracket.
SIF-1H1 Drawing
| Approximate Sensitivity | 10 μV per C |
| Output from Thermopile | Approximately -0.55 to 0.55 mV for a temperature difference from -55 to 55 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 (-30 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 | 32? horizontal half-angle; 13? vertical half-angle |
| Spectral Range | 8 to 14 μm; atmospheric window |
| Operating Environment | -50 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) |
| Cable | 5 m of shielded, twisted-pair wire with TPR jacket (high water resistance, high UV stability, flexibility in cold conditions), additional cable available |
| Warranty | 4 years against defects in materials and workmanship |
| Manufactured | Made in the USA |
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