Company | Product List | Contact us | E-Mail

HomeChroma MeterSpectral Irradiance Meter Integrating SphereThermal Resistance MeasuringUniform LightSourceX-ray Camera & SensorCCD CameraSpectrometerFilter SeriesRGB Color SensorLight SourceRadiometer Series

Chroma Meter CS-100A

       A compact, lightweight, battery-powered instrument with a 1° measurement angle for high-accuracy non-contact measurements of the luminance and chromaticity of light sources and reflective subjects.
  • Fully mobile and portable
  • Measurements are made entirely without contact.
  • Converts the color of the indicated area to numerical values
  • Support for measurement of extremely small surfaces
  • Two-way RS-232C communication
  • Color-difference measurement
  • Calibration to a user reference for reduced error
  • Support for remote control and data processing


  • Chromaticity and luminance measurements of LEDs and other small light sources.
  • Chromaticity and luminance measurements of tungsten and fluorescent lamps.
  • Surface color measurements of freshly painted walls and other surfaces that cannot be touched.
  • Surface color measurements of complex shapes and items that cannot be touched for reasons of hygiene.
  • Chromaticity and luminance measurements of traffic signals.
  • Chromaticity and luminance measurements of color TV sets.
  • Luminance measurements of monochrome TV sets.
  • Chromaticity and luminance measurements of video projectors.


Type SLR spot colorimeter for measuring light-source and surface luminance and chromaticity
Acceptance angle

Optical system 85mm f/2.8 lens; SLR viewing system; flare factor less than 1.5%
Angle of view 9° with 1° measurement area indication
Focusing distance 1014mm (40 in.) to infinity
Receptors 3 silicon photocells filtered to detect primary stimulus values for red, green, and blue light Spectral response Closely matches CIE 1931 Standard Observer curves
Response time FAST: Sampling time: 0.1s, Time to display: 0.8 to 1.0s; SLOW: Sampling time: 0.4s, Time to display: 1.4 to 1.6s
Luminance units: cd/m² or fL (switchable)
Measuring range FAST: 0.01 to 299,000cd/m² (0.01 to 87,530fL); SLOW: 0.01 to 49,900cd/m² (0.01 to 14,500fL)
Accuracy Luminance (Y): ±2% of reading ±1 digit
Chromaticity (x,y): ±0.004 (Illuminant A measured at ambient temperature of 18 to 28°C/64 to 82°F)
Repeatability Luminance (Y): ±0.2% of reading ±1 digit
Chromaticity (x,y): FAST: Y 100cd/m² or above: ±0.001; 48.1 to 99.9cd/m²: ±0.002; Below 48.1cd/m²: Below measurement range
SLOW: Y 25.0cd/m² or above: ±0.001; 12.0 to 24.9cd/m²: ±0.002; Below 12.0cd/m²: Below measurement range (Measurement subject: Illuminant A)
Target value set by measurement or numerical input Measurement modes: Absolute color: Yxy; Color difference: Δ(Yxy)
Display External: LCD; 3 values (Y, x, and y) of 3 digits each with additional indications
Viewfinder: 3-digit LCD (showing luminance value Y with LED backlight
Data communication RS-232C; baud rate: 4800bps
External control Measurement process can be started by external device connected to data output terminal
Power source One 9V battery; Power can also be supplied via data output terminal
Operating temperature/humidity range 0 to 40°C, relative humidity 85% or less (at 35°C) with no condensation
Storage temperature/humidity range -20 to 55°C, relative humidity 85% or less (at 35°C) with no condensation
Dimensions (W x H x D) 79 x 208 x 154mm
Weight 890g without battery
Standard accessories Lens cap; Eyepiece cap; Protective filter; ND eyepiece filter; 9V battery; Chromaticity chart; Case