Bench-top Spectrophotometer CM-3700A


The CL-200A is a cost effective and portable solution for measuring illuminance and color of light Including LED and EL lighting. Measurement data includes lux, CCT, xy coordinates and can be used for LED binning or matrix measurements over a large area.

  • Tristimulus colorimeter to measure color and illuminance of light sources
  • Measurement range: 0.1 to 99,990 lx, 0.01 to 9,999 fcd
  • Data output: Tristimulus values (XYZ), Ev xy; Ev u'v'; Ev, Dominant wavelength, Excitation purity
  • Conforms to Class AA of JIS C 1609-1
  • Detachable measuring head and multi-point measurement option
Bench-top Spectrophotometer CM-3700A

Simple measurements of light-source illuminance and colour

The Chroma Meter CL-200A is a compact, lightweight, handheld instrument for measuring the colour and illuminance of light sources and displaying the results in terms of tristimulus values, illuminance, chromaticity, dominant wavelength, excitation purity, correlated colour temperature, and difference values from a target.

The CL-200A can also be configured to operate multiple measurement heads at once through a single instrument or simply to operate a single head remotely, excluding the shadows and reflections from the operator from measurement data.

The included CL-S10w software adds further versatility, including LED ranking, correlated colour temperature, and multi-point or user calibration.


Principal applications

  • Checking the illuminance, chromaticity, dominant wavelength, and correlated colour temperature of various kinds of light sources including organic EL lighting (OLED), LEDs, etc.
  • LED billboard development, quality control, and maintenance
  • Evaluating the light distribution characteristics of LED illumination modules or lighting fixtures
  • Building and interior lighting research
  • Spatial lighting production and adjustment
  • Colour-viewing cabinet maintenance
  • Projector light source research and colour inspection
  • Checking environments for psychological research experiments


  • Portable and traceable: small, light and designed for single handed operation, the CL-200A is powered by AA batteries for user convenience. The instrument can also be operated by AC power or controlled via the PC software dependent on requirements.
  • Detachable receptor head: the operator can utilise the optional remote receptor head set to operate the measurement head at distance, eliminating the influence of operator shadows or reflections from the measurement data.
  • Expedite routine measurement: the instrument can operate up to 30 measurement heads simultaneously over a large area (requires AC power) saving the data for each head into the CL-S10w software for analysis and reporting.
  • Entry level solution for QC of white LED: the CL-200A is able to provide data to not only control the brightness of white LEDs but also chromaticity and colour temperature (the CS-10w software includes an LED binning function) providing a basic system for inspection of individual chips or assemblies.

Specifications & Downloads

Specifications & Downloads
Model Chroma Meter CL-200A
Luminance meter class Conforms to requirements for Class AA of JIS C 1609-1: 2006 "Illuminance meters Part 1: General measuring instruments"
Relative spectral reponse  Closely matches CIE standard observer curves x−(λ), y−(λ), and z−(λ) Within 6% (f1') of the CIE spectral luminous efficiency V(λ)
Cosine response (f2) Ev: Within 3%
Receptor Silicon photocell
Measurement functions Tristimulus values: XYZ
Chromaticity: Ev xy; Ev u'v'; Ev, Dominant wavelength, Excitation purity
Correlated colour temerature: Ev, Tcp, Δuv; Tcp (JIS method; available only with CL-S10w)
Colour difference: Δ(XYZ), Δ(Ev xy), Δ(Ev u'v'), ΔEvΔu'v' (One target colour)
Other functions User calibration function, Data hold function, Multi-point measurement (2 to 30 receptors)
Measuring range 0.1 to 99,990 lx, 0.01 to 9,999 fcd (Chromaticity: Available at 5 lx or 0.5 fcd and above) in four automatically selected ranges (Lux or fcd selectable)
Accuracy Ev (Linearity): ±2%, ±1 digit of displayed value (based on Konica Minolta standard) xy: ±0.002 (800 lx, Standard light source A measured)
Repeatability Ev: ±3%, ±1 digit of displayed value xy: ±0.003 (Based on Konica Minolta's standard measurement conditions)
Humidity drift Ev: ±3%, ±1 digit of displayed value xy: ±0.003 (Based on Konica Minolta's standard measurement conditions)
Response time 0.5 sec. (continuous measurement)
Data communication USB for connection to PC using included USB Cable T-A15; Terminal for output to printer using optional Printer Cable T-A12
Display 4-significant-digit LCD with back-light illumination
Operating temerature / humidity range -10 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
Power source 2 AA-size batteries / AC adapter (optional)
Battery life 72 hours or longer (when alkaline batteries are used) in continuous measurement
Dimensions 69 × 174 × 35mm (2-3/4 × 6-7/8 × 1-3/8 in.)
Weight 215g (7.6 oz) not including batteries
Standard accessories Case T-A10, Cap T-A13, Strap, AA-size batteries (not included in some areas), Data Management Software SL-S10w, USB Cable T-A15
Optional accessories Additional receptor heads, Adapter Unit for Main Body T-A20; Adapter Unit for Receptor Head T-A21; AC Adapter AC-A308 (for 1 to 10 receptor heads); AC Adapter AC-A311 (for 1 to 30 receptor heads); Printer Cable T-A12; Hood CL-A11; Hard Case CL-A10

Principal Specifications of Data Management Software CL-S10w

Type Add-in for Excel® (Excel is required to use this add-in.)
Operating environment One of the following environments with Excel® installed: Windows® XP + Excel® 2003 (OS language: English, Japanese, or Simplified Chinese) Windows® 7 + Excel® 2007 32 bit (OS language: English, Japanese, or Simplified Chinese)
Compatible instruments CL-200A, CL-200 (Some functions not available with CL-200.)
Specifications are subject to change without prior notice.

CL-200A Catalogue

Chroma-meter for illuminance & tristimulus colour measurement




Chroma Meter CL-200A Communication Specifications

Customers who purchased the Chroma Meter CL-200A can download the communication specifications here. This information can be used to write your own software.

Languages available:

Download here



Optional accessories for Illuminance Colour Meter CL-200A



AC-A308 AC Adapter

Item Order Code: A32T-713


AC-A311 AC Adapter

Item Order Code: 1864-793


T-A12 Printer Cable

Item Order Code: 1876-701


T-A20 Adapter Unit for Main Body

Item Order Code: 1876-710


T-A21 Adapter Unit for Receptor Head

Incl. 1m cable cat.5

Item Order Code: 1876-711


CL-A10 Hard Case

Item Order Code: 1877-601


CL-A11 Hood

Item Order Code: 1877-700

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