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UL 1500
General characteristics
- Equipment for luminous flux measurement on light sources by comparision with a standard lamp
- Construction according to DIN 5032 Part 1 and CIE Publication No. 84 "The Measurement of Luminous Flux"
- Metal chassis for sphere
- Sphere to be opened to install measuring objects
- Mechanical lock
- Bracket to connect LMT measuring lamp holders
- Shading device horizontal adjustable
- Sphere paint inside with LMT photometer paint with matt-white diffusing surface, reflectance 80 % with variation of reflectance < 1.5 % in wavelength range 400 to 700 nm
Photometer
- Photometer head with Si-photoelements
- Diameter of light sensitive area 30 mm
- Very fine V(λ)-approximation with accuracy f1 < 1 % according to DIN 5032 part 6
- Thermostatic stabilization of photometer head to approx. 35°C ± 0.1°C
- Diffusor built-in flush with inner surface of sphere
- Electronic display unit U 1000
- 4½-digit display
- BCD output, analog output
- Ranging auto/manual or remote programmable
- Approx. 2 readings/s, 4-digit attenuator disconnectible
- Power supply for thermostatic stabilization of photometer head
- Stabilized power supply for auxiliary lamp
- Digital display for sphere inside temperature, 0.1°C resolution
- 19-inch 3 HU case for bench or rack mounting, instrument carrier
- Power supply for 230 V, 50-60 Hz
Special characteristics
- 1 500 mm diameter
- Sphere material glass fiber, outside painting blue
- Clamping device for fixing holders in pendent, upright, and horizontal position
Display range
- 10-2 lm (last digit) to 2 × 106 lm
- Display range 10-3 lm (last digit) to 2 × 106 lm
- Electronic display unit CONTROL-U 1000 in 19-inch 3 HU case for rack mounting
- LMT Colormeter C 1210 for color measurements on light sources
- Power source and wattmeter for test items
- System integration with 19-inch electronic rack and LMT Connection unit
- Software LMT LIMES 2000 Program package for integrating spheres
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