INTRODUCTION

The New Spectra Candela PhoRad Photometer is exclusively designed for Radiologist and Radiographers for NDT/QA application.

Spectra Candela PhoRad IIIR Photometer model SC-810  is essential for quality assurance of medical imaging at Diagnostic Imaging departments in hospitals and clinics.

This innovative, hand-held radiographic optical instrument has been specifically designed to measure light intensity of viewing port, viewers, image monitors and etc., directly in candelas per   meter squared (cd/m2) as set forth in the new standards outlined in the  Standard Practice for Radiographic Examination (ASTM E-1742-05).

And, to optimize image contrast, it also measures the viewing room ambient background illumination falling on the viewer surface as set forth in the new standards.

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Diagnostic Imaging Background

Diagnostic Imaging (Radiology) Accuracy and reliability of diagnosis in hospitals and doctors clinics greatly depend upon the conditions under which radiographs and images are viewed. These conditions include the luminance levels in candelas per meter squared (cd/m2) of the display devices (viewing boxes, image workstation monitors, image intensifier monitors) as well as the ambient room illumination (the amount of light falling on the viewing surfaces) in lux.

In an effort to reduce the rate of misdiagnosis (estimated to be as high as 30% by a number of research studies), the Federal Drug Administration, American College of Radiology (ACR), the American Cancer Society and the European community of radiologists have all adopted guidelines and standards for viewing lighting levels.

In order to improve the quality of image interpretation and to reduce the chance of misdiagnosis. Spectra Cine is introducing this New Spectra Candela PhoRad IIIR Photometer and it could easily provide radiology departments with a hand-held photometer that measures both display device luminance and ambient illuminance.

Candela IIIR PhoRad Photometer measures light output of illuminator to ensure that user is in compliance with ASTM E-1742-05 and ACR-recommended light levels. Readings are in nits or candelas per meter squared (cd/m2) or foot Lamberts (fl). A second optical detector to measure the Ambient light in lux (lx) or foot-candles (fc). This instrument is essential for quality assurance of medical imaging at Diagnostic Imaging departments in hospitals and clinics.
 

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Preliminary Specifications

Spectra Candela PhoRad IIIA illuminance  photometer

Model No. SC-800

• Type: Hand-held photometer for measuring ambient light.
   

• Light Sensor: Ultra-stable silicon photodiode, together with computer selected glass filters to match the spectral response of the human eye (the CIE 1931 photopic response function) V (λ) filter.
   

• MEASURING CAPABILITY: Measures illuminance level in foot-candles (fc) and lux (lx).
   

• Illuminance range: 1 to 100,000 lx;  0.1 to 70,000 fc
   

• RESOLUTION: 0.1 to 49.9 in  0.1 increments; 50 to 999 1 increments; 1,000 to,99,990 in 10 increments.
   

• ACCURACY: Incandescent light source (CIE Illuminant A) ±2.5% of the measured value. Additional error when measuring non-blackbody sources ±3%. 
   

• Repeatability: ±0.2%
   

• Additional Functions: Memory Store and Recall.
   

• Lamp: Electroluminescent lamp for backlit display
   

• Power CONSUMPTION: Operating 5.00mA/ reading. Data Retention 5uA.
   

• POWER SOURCE: One 6 volt battery #A544, PX28L, PX28
   

• DIMENSIONS: 5½" x 2½" x 2"
   

• WEIGHT: Approximately 6 ounces
   

• Warranty: One year limited warranty.
   

• All Spectra Candela PhoRad meters are supplied with
  Supplied in attractive, sturdy foam-lined protective carrying case with space for accessories, Instruction Manual, NIST traceable calibration and Certification and Battery
   

• manufactured in United States of America

Complies with Standard Practice for Radiographic Examination ASTM E-1742-05 Specifications.

* Operating Temperature Range: 32˚F to 130˚F (0˚C to 55˚C).
* SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
 

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Preliminary Specifications

Spectra Candela PhoRad IIIR luminance Photometer

 Model No.SC-810 & SC-810-A

• Type: Hand-held photometer for measuring luminance Intensity in candelas per meter squared (cd/m2).
   

• Light Sensor: Ultra-stable silicon photodiode, together with computer selected glass filters to match the spectral response of the human eye (the CIE 1931 photopic response function) V (λ) filter.
   

• measuring Sensor: Aperture 19 mm Measuring  surface 6.25 x 6.25 mm.
   

• MEASURING Principle: Contact measurement with the  Luminance Probe placed directly on the surface to be measured.

• MEASURING CAPABILITY: Measures luminance level in candelas per meter squared (cd/m²) or foot-lamberts (fl).

• Luminance Range: 1 - 100,000,  *2X attenuator extends upper range to 199,980 (*with Model SC-810-A) cd/m²
   

• RESOLUTION: 1 to 999  in 1 cd/m2  increments; 1,000 to 99,990 in 10  increments
   

• ACCURACY: Incandescent light source (CIE Illuminant A) ±2.5% of the measured value., Additional error when measuring non-blackbody sources ±3%. 

• Repeatability: ±0.2%
   

• Calibration: Calibration is traceable to the National Institute of Standard Technology (NIST), Washington D.C.

•  

• Lamp: Electroluminescent lamp for backlit display
   

• Power CONSUMPTION: Operating 5.00mA/ reading. Data Retention 5uA.
   

• POWER SOURCE: One 6 volt battery #A544, PX28L, PX28
   

• DIMENSIONS: 5½" x 2½" x 2"
   

• WEIGHT: Approximately 6 ounces
   

• Warranty: One year limited warranty.
   

• All Spectra Candela PhoRad meters are supplied with
  Supplied in attractive, sturdy foam-lined protective carrying case with space for accessories, Instruction Manual, NIST traceable calibration and Certification and Battery
   

• manufactured in United States of America

Complies with Standard Practice for Radiographic Examination ASTM E-1742-05 Specifications.

* Operating Temperature Range: 32˚F to 130˚F (0˚C to 55˚C).
* SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
 

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DOWNLOADS:

• Spectra Candela PhoRad photometer - Brochure

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