Konica Minolta CL-200A Illuminance Colorimeter

Gives accurate illuminance & colour readings - even with LEDs!

The CL-200A is an affordable, portable, tristimulus colorimeter that provides accurate readings regardless of the type of light source under test - even with LEDs!. The CL-200A is used for measuring the illuminance (luminous flux received per unit area), chromaticity, colour temperature and dominant wavelength of light sources in lux (or foot candles, where 1 fcd = 1 lumen per square foot = 10.764 lux). Don't confuse affordability with inaccuracy, though. The CL-200A is equipped with advanced features which promote measurement accuracy and ease of use. The spectral response of the CL-200A's three silicon photodiodes is matched closely to the CIE tristimulus observer functions using special filters, while a cosine diffuser ensures that the effective illuminance from off-axis sources is scaled correctly. The CL-200A provides measurements over 4 decades, from 0.1 to 99,900 lux (colour readings require 5 lux or higher). In nature, illuminance typically ranges from about 0.01 lux on a dark night to about 100,000 lux on a hot summer day. Workplace illumination is normally around 1000 lux.

Flexible & Convenient

The CL-200A conveniently allows you to separate the sensor head from the main body of the meter. This allows you to hold the sensor towards the light source whilst standing to one side and reading the light level. To use the CL-200A in this way, you will need to order a couple of optional accessories (T-A20 receptor unit for the main body and the T-A21 receptor unit for the sensor head with 1m LAN cable).

Many Advanced Features

Basic operation of the CL-200A gives you readings of the illuminance in lux (or you can select foot candles if you prefer), chromacity as CIE xy or u'v' coordinates, correlated colour temperature (CCT) in Kelvin and dominant wavelength (in nm). The CL-200A also reports the tristimulus values XYZ and colour differences. Advanced operation allows you to hold a reference reading and enter colour correction factors specific to the type of light source under test. The CL-200A features as standard a USB interface - software is provided that allows you to log readings to an Excel spreadsheet. Zero adjustment is automatic, while you can either leave the meter to set its own range automatically or choose your preferred range manually. The LCD display features a backlight that turns on automatically under low ambient illumination. The CL-200A operates as standard from AA-size batteries (non-rechargeable), while an AC mains adaptor is available as an accessory.

Specifications & Ordering Information

Model	CL-200
Sensor	3 x silicon photodiodes with cosine diffuser
Spectral Response	CIE Tristimulus CIE x(l), y(l) & z(l)
F₁' (Spectral Mismatch to CIE)	Within 8%
Measurement Parameters	E_v in lux (lx) & foot candles (fc)
	xy, u'v', Tcp (Kelvin)
Dynamic Range	4 decades
	Automatic or manual selection
Measurement Range	0.1 to 99,900 lx (0.01 to 9,990 fc)
	Chromaticity given for E_v> 5 lx
Accuracy	E_v:± 2% ± 1 digit (illuminant A)
	xy: ± 0.002 (800 lx, illuminant A)
Repeatability	E_v: 0.5% + 1 digit (2s, 800 lx, illuminant A)
	xy: ± 0.0005 (800 lx, illuminant A)
Other Features	User calibration function
	Data hold function
Temperature Drift	E_v: ± 3% ± 1 digit of displayed value
	xy: ± 0.003
Humidity Drift	E_v: ± 3% ± 1 digit of displayed value
	xy: ± 0.003
Digital Output	USB
Response Time	0.5 seconds (continuous measurement)
Display	Backlit LCD with 4 significant digits
Operating Temperature/Humidity	-10 to 40°C, relative humidity < 85% (35°C), non-condensing
Storage Temperature/Humidity	-20 to 55°C, relative humidity < 85% (35°C), non-condensing
Power	Internal AA alkaline batteries (x2). AC mains adaptor (optional)
Battery Life	> 72 hours
Dimensions	69 x 174 x 35mm
Weight (without batteries)	215g
Accessories Included
CL-200 main body
CL-200 sensor head
Sensor head cap
Soft case (T-A10)
Neck strap
Software - data management (SW-S10w)
Interface cable - USB
Batteries
Optional Accessories
Calibration certificate
AC mains adaptor (AC-A308)
Printer cable (T-A12)
Adaptor unit for main body (T-A20)
Adaptor unit for sensor head (T-A21)
Hard case (CL-A10)
Stray light hood (CL-A11)
Spectral sensitivity curve data sheet
Acceptance angle data sheet