Konica Minolta



CRI Illuminance meter CL-70F

A compact, easy to use instrument for measuring light sources, including LED lighting and EL lighting. The CL-70F provides an entry-level solution for measurement of Colour Rendering Index, spectral irradiance, peak wavelength, tristimulus values, chromaticity, correlated colour temperature, dominant wavelength, excitation purity, illuminance, and difference values.


Principal Specifications of CL-70F


CRI Illuminance Meter CL-70F

Illuminance meter class Conforms to requirements for Class A of JIS C1609-1:2006 "Illuminance meters Part1: General measuring instruments; Conforms to DIN 5032 Part 7 Class C
Sensor CMOS linear image sensor
Spectral wavelength range 380 nm ~ 780 nm
Output wavelength pitch 1 nm
Measuring range Constant light: 1 to 200,000 lx; 1,563 to 100,000 K (Chromaticity display requires 5 lx or more)
Flash light: 20 to 20,500 lx・s; 2,500 to 100,000 K
Accuracy (Standard Illuminant A) *1 *2 EV: ±5%+1digit of displayed value
xy: 0.003 (at 800 lx)
Repeatability (2σ)
(Standard Illuminant A)

EV: 30 to 200,000 lx: 1%+1digit; 1 to 30 lx: 5%+1digit *3
xy: 500 to 200,000 lx: 0.001 *4
xy: 100 to 500 lx: 0.002 *4
xy: 30 to 100 lx: 0.004 *4
xy: 5 to 30 lx: 0.008 *4
Visible-region relative spectral response characteristics (f1’) Within 9%
Cosine response (f2) Within 6%
Temperature drift (fT) EV: ±5% ; xy: ±0.006
Humidity drift (fH) EV: ±3% ; xy: ±0.006
Power 2 AA-size batteries (Alkaline batteries or manganese dry cells); USB bus power
Response time Constant light (Maximum): 15 sec
Constant light (Minimum): 0.5 sec
Flash light: 1 ~ 1/500 sec (in 1-step intervals) *5
Color indication modes Correlated colour temperature Tcp, Difference from blackbody Δuv, XYZ, xy, u'v', Dominant wavelength λd, Excitation purity Pe, Spectral irradiance, EV, CRI (Ra, Ri), Peak wavelength λp, exposure value
Other functions Data memory: 999 data; Preset function; Auto power off function
Display languages English, Japanese, Chinese (Simplified)
Interface USB 2.0 Mini B
Operating temperature and humidity range -10 to 40℃, relative humidity of 85% or less (at 35℃) with no condensation
Storage temperature/humidity range -10 to 45℃, relative humidity of 85% or less (at 35℃) with no condensation
Size 73 (W)× 183 (H) × 27 (D) mm (Not including projecting buttons)

*1 Measurement mode: Constant light (range L), Exposure time:AUTO
Linear for EV
10 times measurement (2σ) /Ave
10 times measurement (2σ)
Shutter speed

Specifications are subject to change without prior notice.