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This Product is discontinued, please refer to the Alternatives shown below under Similar Products or contact us directly.

Alternative Products for this discontinued product:

BN-LH250
Calibration Lamp for Spectral Irradiance and Illuminance
BN-9101
Calibration standard lamp for spectral irradiance

BN-LHSI-WP

Calibration Lamp for Spectral Irradiance and Illuminance for Outdoor -WP devices

  • 250 W halogen lamp with stable and therefore long-lasting, helical structure
  • Integrated Pen-Ray HgAr for wavelength calibration
  • Fixed distance and optimized for -WP series devices
  • Calibration in spectral irradiance, 250 nm - 2500 nm, and/or illuminance
  • Optional power supply LPS-250
BN-LHSI-WP

Calibration standard lamp for use as reference spectral irradiance standard

One of the most common optical radiation measurement quantities is irradiance. This measures the radiation power incident on a reference surface in W/m². Calibrated light sources are required to calibrate instruments for measuring spectral irradiance (spectroradiometers). These sources must have a continuous spectrum over the spectral sensitivity range of the instrument to be calibrated and a calibration traceable to a National Metrology Institute (NMI). The lamps used must meet high requirements with regard to their short- and long-term stability. Halogen lamps are most commonly used for calibration. These offer a continuous spectrum from approximately 250 nm to 2500 nm. The lamps must be operated with a constant current. To calibrate the measuring instruments, the calibration lamp is arranged at a predetermined distance from its input optics, typically a cosine diffuser.


Reference standard BN-LHSI-WP

The reference standard BN-LHSI-Wp is based on a 250 W halogen lamp. This lamp exhibits excellent short-term and long-term stability due to its very stable filament. The quartz envelope itself is frosted for a more uniform radiation. The electrical connection is made via two laboratory sockets on the stand. The lamp itself is mechanical light tight designed which is needed at outdoor use and the mechanical connector is optimized for spectroradiometeres of the -WP series. Resulting a precise and reproducible alignment / positioning of the reference standard in the measuring arrangement is possible.

The BN-LHSI-WP has an HgAr Pen-Ray lamp implemented for wavelength calibration and testing purposes.

Each lamp is subjected to a recorded burn-in process prior to its release. Only lamps that meet the strict burn-in criteria will be released. This controlled aging is confirmed by certificate.


Traceable calibration of spectral irradiance with calibration certificate

The spectral irradiance is calibrated in the optical radiation calibration laboratory of Gigahertz-Optik GmbH. This laboratory is accredited by the DAkkS for spectral irradiance according to ISO / IEC / EN 17025. The standard calibration is a factory calibration.


Precision lamp power supply LPS-250-BT

Gigahertz-Optik GmbH offers an optional LPS-250-BT power supply for the operation of the reference standard BN-LH250. This is characterized by the high resolution and stability required of the lamp operating current. The lamp is switched on and off with current ramping to prevent damage to the filament.

Calibration lamp BN-LHSI-WP with tungsten lamp for absolute calibration and Pen-Ray lamp for wavelenght calibration

Calibration lamp BN-LHSI-WP with tungsten lamp for absolute calibration and Pen-Ray lamp for wavelenght calibration

Spectral irradiance plot 250 nm to 2500 nm

Spectral irradiance plot 250 nm to 2500 nm

Stable filament for use as calibration lamp (shown before frosting)

Stable filament for use as calibration lamp (shown before frosting)

Similar Products

BN-LHSI-WP
Calibration Lamp for Spectral Irradiance and Illuminance
BN-LHSI-WP
Calibration standard lamp for spectral irradiance

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