Lux and luminance meter calibration

LuxCal250 from Bentham

The LuxCal250 provides accurate luxmeter calibration over an exceptionally wide dynamic range. Comprising a light-tight enclosure housing standards of illuminance, Bentham’s LuxCal250 presents a straightforward and cost-effective calibration solution obviating requirements typical of traditional, distance-based calibration.Designed as a high-performance, all-in-one calibration solution, the capabilities of the LuxCal250 may be extended to encompass precise luminance meter calibration with the LumiCal50, alongside representing a UKAS accredited calibration device with the LuxCal+.

Features
  • Houses standards in light tight enclosure with easy access to position devices under test
  • Colour shifted (2856K quartz tungsten halogen (QTH) standards (CIE illuminant A)
  • Output level of the illuminance / luminance calibrator is varied via neutral density filters,
  • Lab jack and height gauge, featuring a laser alignment aid, allow accurate positioning of device under test
  • Calibration traceable to Physicalish Technische Bundesanstalt (PTB, Germany)

Further information

Core benefits

  • Calibrate luxmeter/ luminance meters in accordance with ISO/CIE 19476:2014
  • No darkroom or optical bench required to achieve wide dynamic range
  • Calibration traceable to PTB, Germany
  • Optional luminance or UKAS accredited calibration

Reported parameters

  • Illuminance (lx)
  • Optional Luminance (cd.m-2)

Specifications

LuxCal250

Lamp type

Quartz Tungsten Halogen lamp, G6.35 base

Nominal lamp power and voltage

250W, 12V

Operating current

10.4A (adjusted to obtain 2856K operation)

CCT

2856±10K

Expected lifetime

2000 hours

Calibration frequency

100 hours use/ one year recommended

Dimensions

600L x 500W x 700H (mm)

Typical illuminance level one (no filter)

19000 lx

Typical illuminance level two (ND1)

1800 lx

Typical illuminance level three (ND2)

180 lx

Typical illuminance level four (ND3)

20 lx

Typical illuminance level five (ND4)

2 lx

LumiCal50

Lamp type

Grit-blasted Quartz Tungsten Halogen lamp, G6.35 base

Nominal lamp power and voltage

50W, 12V

Operating current

4.0A (adjusted to obtain 2856K operation)

Expected lifetime

2000 hours

Calibration frequency

100 hours use/ one year recommended

Typical luminance level one (no filter)

21000 cd.m-2

Typical luminance level two (ND1)

1800 cd.m-2

Typical luminance level three (ND2)

200 cd.m-2

Typical luminance level four (ND3)

30 cd.m-2

Typical luminance level five (ND4)

3 cd.m-2

LuxMeter+

Spectral function

V(λ) photometric

V(λ) matching error

f1 ≤ 3 %

Typical responsivity

0.5 nA/lx

Diffuser diameter

7mm

Cosine matching error

f2 ≤ 1.5 %

Typical minimum detectable illuminance

20 mlx

Typical maximum detectable illuminance

20 klx

Display

5 digits, auto-ranging

Power supply

Mains transformer

Interface

USB 2.0

610 Constant current power supply

Input voltage

100V - 220V, 5A max, 50-60Hz

Output voltage & current

0-10.4A in remote use. Max Voltage: 26V

Connection type

IEC mains input connection

Resolution

0.1A local; 0.001A over SCPI protocol

Operation modes

Remote mode
PC: SCPI protocol allows the Set Current to be assigned to an accuracy of 1mA
Local mode
Pre-set: Allows pre-set Current settings to be selected
Variable: Used to set the current between 0-10.4A, indicated on the display

Current pre-set

4.00 A, 5.40 A, 6.30 A, 8.50 A, 10.40 A, 0-10.4A variable

Max output power

250W

Setting control

Remote setting by user interface controlled through USB
Local setting by rotary switch
(fixed current or variable settings)

Operating conditions

Ambient temperature: 0°C - +40°C
Storage temperature: -20°C - +85°C

Drift

0.05% of rated output
(Over an 8-hour interval with constant line, load and temperature, after a 30-minute warm-up period)

Temperature stability

30ppm/°C

Compliance to standards

EN 61010-1:2010
EN 61326-1:2013

Accuracy

±(0.04% +0.05A)

Output power ripple

<0.1%

Dimensions

450L x 300W x 130H (mm)

Weight

5 kg

Mode types

Constant Current, Constant Voltage

Applications

  • ISO/CIE 19476:2014, Characterization of the performance of illuminance meters and luminance meters
  • CIE S 023/E:2013, Characterization of the performance of illuminance meters and luminance meters
  • Luxmeter calibration
  • Luminance meter calibration
  • UKAS accredited calibration

Downloads

LuxCal 250, LumiCal 50 & Luxmeter+

Contact

Ing. Fabrizio Renzi
Ing. Fabrizio Renzi

Contact

Quantum Design s.r.l.

Via Francesco Sapori, 27
00143 Roma
Italy

Phone:+39 06 5004204
Fax:+39 06 5010389
E-mail:italy@qd-europe.com
Ing. Fabrizio RenziProduct Manager
+39 06 5004204
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