UDT Model 19830-3-FLEX Cooled Radiometric Sensor

The UDT 19830-3-xx-FLEX Series from Gamma Scientific includes thermoelectrically cooled photodetector heads that work in conjunction with our model 400-C Series optical meters to measure a wide variety of light levels. These photodetector heads provide direct readings in the spectral range of 200 to 1800 nm and feature active temperature control.

Our wide range of light measurement tools is complemented by ISO/IEC 17025 accreditation by NVLAP (NVLAP lab code 200823-0), resulting in unmatched performance and custom configuration as required.

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Photodetector Specifications                               

Wavelength Range

190 to 1100 nm (1)

Photodetector Type

Silicon

Active Area

5.8 x 5.8 mm

Dynamic Range (Irradiance)

35.8 x 10-12 to 4.18 x 10-1

Peak Response (Irradiance)

4.191 x 10-3 A/W/cm2 @ 980 nm

Peak ƛ 980 nm with Opal diffuser

Aperture

3.5 mm

Photosensitivity at Peak

0.5 A/W at 960 nm

Cooling Temperature

20 to + 60° C

Storage Temperature

-20 to + 80° C

Calibration

ISO17025, NIST Traceable

Available Accessories

 

Quartz diffuser

Number of TE Coolers 1
Reverse Voltage, Maximum

5 V

Shunt Resistance

0.4 GΩ

Short Circuit Current at 100 lx

28 µA

Window Material Sapphire
Dark Current

25 pA @ 10 mV reverse voltage

Temp Coefficient, Dark Current

1.15 x per °C

Rise Time

1 µsec

Reverse Voltage 0 V, Load  1kΩ

Terminal Capacitance

380 pF

Reverse Voltage 0V, 10 kHz

Noise Equivalent Power

1.3 x 10-14 W/Hz1/2

(1) Quartz diffuser required for UV operation

Specifications are subject to change without notice

 

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