The UDT 19830-2L-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.
Photodetector Specifications | |
Wavelength Range | 190 to 1100 nm |
Photodetector Type | Silicon |
CIE V (λ) Function(1) | f1’ ≤ 2% |
Active Area | 10 mm x 10 mm, 8mm aperture |
Dynamic Range | 1 x 10-6 to 1 x 104 lux |
Photo Sensitivity at Peak | 0.5 A/W at 900 nm |
Reverse Voltage (max) | 5 V |
Shunt Resistance | 0.2 GΩ |
Operating Temperature | 20 to + 60° C |
Storage Temperature | -20 to + 80° C |
Nominal Field of View | 8.2° |
Calibration | ISO17025, NIST Traceable |
Available Accessories
| Luminance Hood 1120V Removable VLAM filter @ 5° |
| Number of TE Coolers | 2 |
| Photosensitivity | ƛp: 0.5 A/W Min: 0.10 A/W at 200 nm Typ: 0.12 A/W at 200 nm 0.33 A/W at 633 nm 0.50 A/W at 930 nm |
| Short Circuit Current at 100 lx | 65 µA min 78 µA typ |
| Maximum Dark Current | 200 pA @ 10 mV reverse voltage |
| Temp Coefficient, Dark Current | 1.15 x per °C |
| Rise Time | 3 µsec Reverse Voltage 0 V, Load 1kΩ |
| Terminal Capacitance | 1100 pF Reverse Voltage 0V, 10 kHz |
| Shunt Resistance | 0.2 GΩ typ. 0.05 GΩ min Reverse Voltage 10 m |
| Noise Equivalent Power | 1.8 x 10-14 W/Hz1/2 |
(1) When equipped with Photometric filter p/n 19629 Specifications are subject to change without notice | |
