LCRT-2005-S stationary light transmission measurement device with fast data logger
Light transmission
Light transmission is the visually sensed light permeability of materials. It is particularly important when it comes to specification of window panes on all types of vehicles, display sheets and disks as well as all the other samples whose transmission is assessed with the photometric responsivity (V(λ)) of the human eye.
LCRT-2005-SIS light transmission measurement device
The LCRT-2005-SIS is elaborately designed for light transmission in stationary applications. The light source is built with a compact integrating sphere that enables diffuse sample illumination (D/0) in small distances and directed (0/0) sample illumination at large distances. The receiver has a 0.38° measurement field angle and a 6.6mm optical gauge. The monitor detector of the light source and that of the receiver are equipped with a diode array. Their spectral measurement data enables precise simulation of the standard illuminants A, D65 and C and the photometric responsivity of the receiver.
Fast data logger
The detector of the light source and the detector of the receiver are equipped with diode arrays and with photometric matched silicon photodiodes. The fast photodiodes enable high-speed recording of measurement values e.g. as required to measure the response time of electrotropic glasses.
LCRT-2005-SIS spectrophotometer
The LCRT-2005-S can also be used as a spectrophotometer due to its spectral measurement detectors in source and receiver. The spectral range is between 425 nm and 705 nm.
Remote control interface
The controller of the LCRT-2005-SIS has a USB, LAN and RS232 interface for remote control.
Traceable measurements
Two transmission standards, one with 70 % and the other with 80 % light transmittance are offered for device 100 % reference matching in applications where traceable measurement values are required.
Recording of the response time of electrotropic glasses with the datalogger measurement function of the LCRT-2005-SIS. Additional spectral transmission measurement on defined support points
| General | |||
| Short description | Stationare measuring instrument for light transmission. |
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| Main features | Spectral measuring method. Build in photometric detector for fast data sampling. Compact source and receiver. Build in camera for receiver to source alignment support. SC-05 Controller. Puls modulated LED lamp for measurements in ambient light conditions. |
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| Measurement range | Spectral range: 425 nm to 705 nm Spectral resolution: 5 nm Transmission range: 5 % to 100 % Measurement beam diameter: 6.6 mm Illumination: A, C, D65 Detection: Spectral Photometric, Spectral Radiometric, Photometric photodiode. |
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| typical applications | Measurement of the light lransmission all kinds of windows. Measurement of the time depending on/off characteristic of smart glass. |
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| Calibration | Realative measurement methode with 100 % reference adjustment. Optional calibration with 70 % or 80 % calibration standards. |
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| Product | |||
| Measurement geometry | D/0 geometry measurement of the luminance ratio with a diffuse light source as per CIE 130 & DIN 5036 |
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| Beam diameter | 6.6 mm at contact measurement |
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| Light Source | Integrating sphere light source with a 20mm illumination field. LED lamps and diode array monitor detector. Simulation of the standard illuminants type A, D65 and D50. |
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| Sensor | Diode array detector with radiant lens and V(λ) silicon photodiode. Depolarizer for measurement of polarized samples; simulation of the photometric responsivity with the spectral measurement data. Digital camera for aid in freehand setup of source and receiver. |
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| spectral range | 425 nm to 705 nm |
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| Measurement range | 5 % to 100 % transmission for a color-neutral transmission spectrum |
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| typical Measurement uncertainty | ± 1 % absolute |
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| Data Resolution | 0.1 % |
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| Calibration | Relative measurements after performing 100% match against air. |
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| Source | |||
| Light Source | Integrating sphere with synthetic ODM98 coating. 20 mm illumination field diameter with homogenous luminance distribution (lambertian radiator). illumination field with a protective shield. |
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| Light Source | White LEDs in pulse mode, usable wavelength range: 425 nm to 705 nm |
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| Monitor detector | 256 pixel diode array spectrometer and V(λ) silicon photodiode |
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| Connection cable | Length 1.5 m Mini DIN plug RS232 and voltage supply |
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| Housing | Aluminium profile with plastic caps threaded bores for mounting |
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| Dimensions | 160 mm x 45 (60) mm x 85 mm |
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| Weight | 450 g |
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| Receiver | |||
| Sensor | 256 pixel diode array spectrometer and V(λ) silicon photodiode and achromatically corrected lens. Depolarizer for measurement of polarized samples. |
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| Measurement beam geometry | Measurement field angle 0.38 ° Sample alignment 0 ° illumination field diameter by contact measurement 6.6 mm, in 1 m measurement distance 12.6 mm |
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| Connection cable | Length 1.5 m Mini DIN plug RS232 and voltage supply |
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| Dimensions | 160 mm x 45 (60) mm x 85 mm |
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| Weight | 400 g |
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| Controller | |||
| Design | Similar to the SC-05 system controller with LCRT-2005-SIS firmware |
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| Source and receiver connector | 9PIN SUBD plug |
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| Interface | USB, RS232 and LAN |
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| Power Supply | Connection: 7,5-25VDC USB: 5V (450mA) |
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| Dimensions | 105 mm x 128 mm x 126 mm |
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| Weight | 500 g |
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| Miscellaneous | |||
| temperature range | 10 °C to 40 °C |
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| Humidity | Above the saturation temperature (<85 % on the measurement device) |
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