UDT Instruments offers a wide range of radiometric sensors and photometric sensors for illuminance or irradiance measurements. Each type of sensor can be combined with various types of optical adaptors to form sensor head assemblies suitable for measurements of flux, intensity, luminance, or radiance.
Model 247 Flat Response Radiometric Sensor Head
The Model 247 is UDTi’s Standard Series flat response radiometric sensor. It can be adapted for use with Standard Series accessories.
- Standard Calibration(s) – Watt
- Sensor Active area (cm2) – 1
- Dynamic Range – 1.3E-10 – 6.4E-03 W
- Calibration Range – 350 – 1100 nm in 10 nm steps
- Typical Response – 1.9E-01 A/W @630 nm
- Features – Precision Radiometric Filter
- Spectral Flatness – 5%-7% over the spectral range: 450 – 950 nm
- Compatible Components – Standard Series accessories. (Diffusers; integrating spheres; spacers; etc.)
UDT Instruments Model 247 Radiometric Sensor
Model 262 Flat Response Miniature Sensor Head
The Model 247 is UDTi’s Miniature Series flat response radiometric sensor. It can be adapted for use with Miniature Series accessories.
- Standard Calibration(s) – Watt
- Sensor Active area (cm2) – .34
- Dynamic Range – 1.3E-10 – 4.0E-03 W
- Calibration Range – 350 – 1100 nm in 10 nm steps
- Typical Response – 1.9E-01 A/W @630 nm
- Features – Precision Radiometric Filter
- Spectral Flatness – 5%-7% over the spectral range: 450 – 950 nm
- Compatible Components – Miniature Series accessories. (Diffusers; integrating spheres; spacers; etc.)
UDT Instruments Model 262 Flat Response Sensor Head
Model 268 Blue UV Optimized Sensor Head
The Model 268BLUE is a Low-Profile Series radiometric sensor optimized for measurements in the blue region centered at 450nm.
- Standard Calibration(s) – Irradiance (W/cm²) at 450 nm
- Sensor Active area (cm2) – 1
- Dynamic Range – 5.0E-10 – 5.0E-02 W/cm²
- Typical Response – 3.1E-02 A/W/cm² @450 nm
- Features – 450 nm Bandpass Filter; Cosine Diffuser
UDT Instruments Model 268 Blue Optimized Sensor Head
Model 268R Flat Response Sensor Head – Low-Profile
The Model 268R is a Low-Profile Series flat response radiometric sensor. It is equipped with a 4.5 inch “lollipop”-style handle.
- Standard Calibration(s) – Power (W) at user-specified wavelength
- Sensor Active area (cm2) – 1
- Dynamic Range – 1.3E-10 – 6.0E-03 W
- Calibration Range – 350 – 1100 nm in * nm steps
- Typical Response – 2.0E-01 A/W @633 nm
- Features – Radiometric Filter; 4.5 inch handle
- Spectral Flatness – 5%-7% over the spectral range: 450 – 950 nm
UDT Instruments Model 268R Flat Response Radiometric Sensor
Model 268 UVA Optimized Sensor Head
The Model 268UVA is a Low-Profile Series radiometric sensor optimized for measurements in the UVA region (320 – 400 nm)
- Standard Calibration(s) – Irradiance (W/cm²) at 365 nm
- Sensor Active area (cm2) – 1
- Aperture Diameter (nm) – 18
- Dynamic Range – 5.0E-10 – 1.0E-01 W/cm²
- Typical Response – 2.0E-02 A/W/cm² @365 nm
- Features – 365 nm Bandpass Filter; internal opal glass diffuser
UDT Instruments Model 268 UVA Optimized Radiometric Sensor
Model 268 UVC Optimized Sensor Head
The Model 268UVC is a Low-Profile Series radiometric sensor optimized for measurements in the UVC region (200 – 280 nm).
- Standard Calibration(s) – Irradiance (W/cm²) at 254 nm
- Sensor Active area (cm2) – 1
- Aperture Diameter (nm) – 11
- Dynamic Range – 5.0E-08 – 5.0E-01 W/cm²
- Typical Response – 2.4E-03 A/W/cm² @254 nm
- Features – 254 nm Bandpass Filter; internal Teflon diffuser
UDT Instruments Model 268 UVC Optimized Sensor Head
Model 424R Radiometric LED Measurement Head
This sensor head couples a filtered silicon sensor with a flat spectral response (based on the Model 247) with a special fixture to measure the averaged radiant intensity of LEDs according to the recommendations of CIE Publication 127 (illustrated above; LED Sockets sold separately). The intensity fixture precisely sets the distance and alignment between the LED and the sensor‚ so that measurement accuracy and repeatability are ensured. The system can easily be configured for either of the CIE-prescribed geometries: Condition A or Condition B. Measurement results are expressed in units of watts per steradian (W/sr). The sensor’s response is approximately constant (within ±5%) from 450 nm to 950 nm‚ to allow quick measurements of devices with unknown peak waelengths‚ etc. The sensor is calibrated over the a wider spectral range (350 – 1100 nm)‚ so that the peak wavelength of the device under test (where known) can be selected during measurement‚ ensuring maximum possible measurement accuracy.
- Standard Calibration(s) – Radiant Intensity (W/sr) for both CIE127 Conditions: A and B
- Calibration Range – 350 – 1100 nm in 10 nm steps
- Spectral Flatness – 5%-7% over the spectral range: 450 – 950 nm
UDT Instruments Model 424 LED Measurement Head
