THORLABS S425C Thermal Power Sensor Head (0.19 - 20 µm, 2 mW - 10 W, Ø25.4 mm)
Wavelength Range: 190 nm - 20 µm
Optical Power Range: 2 mW - 10 W (20 Wb)
Input Aperture Size: Ø25.4 mm
Active Detector Area: Ø27 mm
Max Optical Power Density: 1.5 kW/cm² (Avg.)
Detector Type: Thermal Surface Absorber (Thermopile)
Linearity: ±0.5%
Resolutionc: 100 µW
Measurement Uncertaintyd: ±3% @ 1064 nm, ±5% @ 250 nm - 17 µm
Response Timee: 0.6 s
Cooling: Convection (Passive)
Housing Dimensions (Without Adapter): 50.8 mm x 50.8 mm x 35.0 mm(2.00" x 2.00" x 1.38")
Temperature Sensor (In Sensor Head): NTC Thermistor
Cable Length: 1.5 m
Post Mounting: Universal 8-32 / M4 Taps (Post Not Included)
30 mm Cage Mounting: -
Aperture Threads: Internal SM1
Removable Heatsink: Yes
Accessories: Externally SM1-Threaded Adapter
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