CL2 Halogen Spectral Irradiance Standard (250-3000nm)

  • CL2 Spectral Irradiance Calibration Standard
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+44 (0)118 975 1355

Calibrated in our dedicated laboratory with respect to standards calibrated by the Physicalish Technische Bundesanstalt (PTB, Germany), a range of calibration intervals within 250-2500nm is on offer, with a De Vos extrapolation of calibration data provided to 3000nm.

Whilst the CL2 is fitted with a grit-blasted 100W QTH lamp as standard, a range of lamps from 10W to 250W are available. Stable lamp operation may be ensured in operating the lamp with the 610 precision constant current DC power supply. A calibration to obtain CIE illuminant A operation (2856K) can be provided for the calibration of illuminance meters.

A mounting bracket provides a universal interface with all optical tables and mounting systems with the calibration distance measured from a simple datum face to the rear of the lamp.

Core benefits

Features

  • Open-frame spectral irradiance calibration standard (mW-1.m-2.nm-1)
  • Spectral irradiance calibration range 250-2500nm with De Vos extrapolation to 3000nm
  • Range of reliable QTH lamps
  • Calibration distance measured from a simple datum face
  • Designed for optimal performance when powered by the 610 current stabilised lamp power supply
  • Calibration performed with respect to the Physicalish Technische Bundesanstalt (PTB, Germany)

Electro-Optical (typical values for CAL_CL2_100W)

Lamp typeGrit-blasted quartz tungsten halogen lamp, G6.35 base
Nominal lamp power and voltage100W, 12V
Operating current8.5A
Expected lifetime2000 hours
Peak wavelength (typ.)860nm
Peak spectral irradiance (typ.)30 mW.m-2.nm-1
Illuminance (typ.)1150 lux
Correlated colour temperature (typ.)3200K
Chromaticity coordinates, CIE 1931 & 1976x = 0.4281, y = 0.4010, u' = 0.2462, v' = 0.5188

Calibration

Measurement typeSpectral irradiance at 500mm from datum face
Wavelength range250-2500nm, with De Vos extrapolation to 3000nm
Wavelength interval5nm
TraceabilityPhysicalish Technische Bundesanstalt (PTB, Germany)
Calibration frequencyRecommended after 100 hours burn-time

Mechanical

Connector4mm socket
CompatibilityPost mounting hole
Dimensions91.2L x 44.4W x 76.2H (mm)

Lamp rating

CAL_CL2_10W10W QTH spectral irradiance standard
CAL_CL2_20W20W QTH spectral irradiance standard
CAL_CL2_50W50W QTH spectral irradiance standard
CAL_CL2_100W100W QTH spectral irradiance standard
CAL_CL2_150W150W QTH spectral irradiance standard
CAL_CL2_250W250W QTH spectral irradiance standard

Calibrations

CALIBRATION-CL2CL2 Spectral irradiance calibration 300-800nm. De Vos extrapolation to 3000nm
CALIBRATION-CL2-250-1700CL2 Spectral irradiance calibration 250-1700nm. De Vos extrapolation to 3000nm
CALIBRATION-CL2-COLOR-TEMPCL2 Operating current modified to obtain 2856K operation (CIE illuminant A)
CALIBRATION-CL2-UVCL2 Spectral irradiance calibration 250-800nm. De Vos extrapolation to 3000nm
CL2 Calibration Standard Dimensions - Top View
CL2 Dimensions - Top View
Typical CL2 Measurement Data Graph
Typical irradiance of CAL_CL2_100W

Ordering Information

CAL_CL2_10W10W QTH spectral irradiance standard
CAL_CL2_20W20W QTH spectral irradiance standard
CAL_CL2_50W50W QTH spectral irradiance standard
CAL_CL2_100W100W QTH spectral irradiance standard
CAL_CL2_150W150W QTH spectral irradiance standard
CAL_CL2_250W250W QTH spectral irradiance standard
CALIBRATION-CL2CL2 Spectral irradiance calibration 300-800nm. De Vos extrapolation to 3000nm
CALIBRATION-CL2-250-1700CL2 Spectral irradiance calibration 250-1700nm. De Vos extrapolation to 3000nm
CALIBRATION-CL2-COLOR-TEMPCL2 Operating current modified to obtain 2856K operation (CIE illuminant A)
CALIBRATION-CL2-UVCL2 Spectral irradiance calibration 250-800nm. De Vos extrapolation to 3000nm
PSU_610Current stabilised lamp power supply

The Bentham Standard

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Call us on +44 (0)118 975 1355 or email us