DH-3P-CAL Family


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The DH-3plus series of calibrated UV-Vis-NIR light sources can be used to calibrate the absolute spectral response of a spectrometer system. Using these light sources and Ocean Optics software, you can determine absolute intensity values — to a high degree of accuracy — at wavelengths from 210-2400 nm. The DH-3P series light sources are specifically calibrated for use with a cosine corrector.

DH-3P Series

This series offers 3.8% – 7.7% uncertainty at region 230 – 1000 nm with the option to select an extended calibration to 2400 nm. These sources also feature an integrated shutter controlled by either TTL pulses or manually on the front of the instrument. The internal shutter blocks light completely from the sampling device, providing the most accurate dark measurements.

Balanced calibration sources

The DH-3P-BAL-CAL is the world’s only balanced deuterium halogen calibration source. A system of proprietary internal mirrors and filters eliminate the D-alpha, D-beta and Fulcher lines in the deuterium source This produces a “smoother” spectrum across the entire wavelength range and producing a more reliable calibration.

NOTE: Calibrated sources typically provide about 50 hours of operation before requiring recalibration, so they are not intended for use as an illuminant in day-to-day measurements. Recalibration service is available. As an alternative to purchasing a calibration source, we can perform an in-house calibration of your spectrometer system with our SPEC-CAL-UV service.

    • Stable deuterium and tungsten halogen sources provide consistent output for the most reliable data.
    • DH-3plus models offer the lowest uncertainty values for the highest accuracy and include an integrated shutter for accurate dark measurements.
    • Balanced output from 230-2400 nm produces a more accurate calibration.
    • Digital calibration data can be loaded into Ocean Optics software for absolute intensity data.

Included with the product:

  • Power cord
  • UV safety goggles
  • CC-3 Cosine Corrector
  • Barrel adapter for SMA 905 Connectors (fibers)
  • Digital calibration data – lamp calibration files
  • Paper calibration data and certificate

Calibration Protocol

These sources are calibrated using a procedure and documentation patterned after the ISO 17025, IEC Guide 115 and JCGM100:2008 (GUM) protocols. Our calibration laboratory is not accredited to ISO 17025, IEC Guide 115 or JCGM100:2008 (GUM) protocols. However, we provide rigorous calibration documentation, upon request, for our DH-3plus sources that makes use of measurement protocols for these standards. Therefore, many customers are able to take the documentation we provide and integrate these calibrated sources into their regulated processes.

DH-3P-CAL Series

The DH-3P eries of light sources offers as low as 3.7% uncertainty at 700 nm and a calibration over the range of 210-1050 nm with the option to select an extended calibration to 2400 nm.

Engineering Specifications DH-3P-CAL DH-3P-BAL-CAL
Sources: Deuterium & Tungsten Halogen Deuterium & Tungsten Halogen
Wavelength Range: 210 – 1100 nm 230 – 1100 nm
210 – 2400 nm with DH-EXT-CAL 230 – 2400 nm with DH-EXT-CAL
250 – 1100 nm with DH-CAL-BF
250 – 2400 nm with DH-EXT-CAL-BF
Nominal Bulb Power: 25 W (deuterium) 25 W (deuterium)
20 W (tungsten halogen) 20 W (tungsten halogen)
Warm-up time:* 40 minutes (deuterium) 40 minutes (deuterium)
20 minutes (tungsten halogen) 20 minutes (tungsten halogen)
Calibration lifetime: 50 hours 50 hours
Calibrated for: Absolute irradiance (µW/cm2/nm) Absolute irradiance (µW/cm2/nm)
Minimum Uncertainty Level: 3.7% at 700nm 4.0% at 700nm
Stability (Current): <5 x 10-6 peak-to-peak (0.1-10.0 Hz) <5 x 10-6 peak-to-peak (0.1-10.0 Hz)
Drift (Voltage): <0.01% per hour <0.01% per hour
Integrated Shutter: Yes Yes
Connection: SMA 905; CC-3-UV-S or 6.35 mm barrel for cosine corrector SMA 905; CC-3-UV-S or 6.35 mm barrel for cosine corrector
Operating Temperature: 5 °C – 35 °C 5 °C – 35 °C
Humidity: 5-95% without condensation at 40°C 5-95% without condensation at 40°C
Power requirements: 85-264 V, 50/60 Hz 85-264 V, 50/60 Hz
Power Consumption: Approximately 78VA Approximately 78VA
Dimensions (W x H x L): 15 x 13.5 x 28.5 cm 15 x 13.5 x 28.5 cm
Weight: 6 kg 6 kg
Safety & Regulatory: CE; ROHS, WEEE CE; ROHS, WEEE

*Warm up time @23 °C ambient, free airflow, no vibrations.

Calibration uncertainties for one standard deviation (k = 1)
Wavelength DH-3P-CAL / DH-3P-BAL-CAL
@ 230 nm (UV calibration) 7.7%
@ 250 nm 6.9%
@ 300 nm 6.5%
@ 400 nm (Standard calibration) 6.0%
@ 500 nm 4.1%
@ 600 nm 3.9%
@ 1000 nm 3.8%
@ 1400 nm (Extended calibration) 4.3%
@ 1600 nm 5.6%
@ 2000 nm 10.6%
@ 2400 nm 11.7%

Applications in which this product is used:

Measurement Techniques in which this product is used:

Please use the following instructions for the following models manufactured in Germany.

PDF: DH-3 CAL (Deuterium-Halogen) (models: DH-3-BAL-CAL, DH-3-BAL-CAL-EXT)