C-4000 SPECTROMETER

Overview

C-4000 combines precision light measuring technology, renowned in the industry with the flexibility and convenience of smartphone technology. Designed specifically for the lighting designer and field technician in mind, the C-4000 Spectrometer offers a compact, lightweight, sophisticated, and affordable solution, truly the dream tool for lighting designers.

With its 2.7” color touch screen, Bluetooth® enabled wireless communication and compatibility with Apple® and AndroidTM smartphone/tablet, the C- 4000 offers the most flexible and real time on-location data sharing than any other system in the market today.

The measurement screen specializes in basic functions, and displays the values essential for light measurements, such as illuminance, color temperature, Δuv, color rendering properties (CRI, TM-30), and chromaticity coordinates (x, y), allowing you to quickly check the values on site.

With the SEKONIC LD App installed on your smart device, remote measurements are easily achieved via Bluetooth connection. The app allows you to remotely trigger measurements, view numerical values and intuitive graphs of the results, and import stored data from the C-4000 to your smart device.

Specifications

Catalog Numbers:

SKU:

401-400

Family:

C-4000

Sensor:

CMOS linear image sensor

Measuring System:

Spectro Meter
Incident light

Measuring Range and Modes:

Measurement range *1:

Wavelength: 380nm to 780nm
Illuminance: 5lx to 10,000lx (0.46fc to 929fc)
Color Temperature (Tcp): 1,600K to 40,000K
Color Rendering Properties:

CRI Ra -100.0 to 100.0
TM-30 Rf 0 to 100, Rg 0 to 200

Accuracy (Light source A):

Illuminance: +/-5% +/-1 digit (5 lx to 3,000 lx),
+/- 7.5 % +/- 1 digit (over 3,000 lx)
x,y: +/-0.003 (800lx)

Repeatability (2σ, Light source A)::

Illuminance: 1 % + 1 digit (30 lx to 10,000 lx), 5 % + 1 digit (5 lx to 29.9 lx)
x, y: 0.001 (500 lx to 10,000 lx)
x, y: 0.002 (100 lx to 499 lx)
x, y: 0.004 (30 lx to 99.9 lx)
x, y: 0.008 (5 lx to 29.9 lx)

Spectral response characteristics (f1):

9% or less

Oblique incident light characteristics (f2):

12% or less

Temperature characteristics:

Illuminance: +/- 5%
x,y: +/-0.006 (Light source A, 1,000lx)

Humidity characteristics:

Illuminance: +/- 3%
x,y: +/-0.006 (Light source A, 1,000lx)

Measurement time:

Max. 15sec, Min. 2sec

Display value:

Illuminance (lx/fc), Tcp*2 (K), uv, CRI (Ra), TM-30 (Rf, Rg), Chromaticity coordinates (x, y)

Other functions:

Data memory up to 99 items, Auto power-off, Auto dimmer

Language:

Selectable from English, French, German, Italian, Spanish, or Japanese

Physical:

Operating Temperature:

5 deg.C to 35 deg.C, without condensation

Storage Temperature:

-10 deg.C to 60 deg.C, 85 % RH or less (at 35 deg.C), without condensation

Power Source:

AA battery (1.5V) x 2, USB bus-power

Interface:

USB connector (type C), Bluetooth

Operating humidity:

85% or less (at 35 deg.C), without condensation

Product Weight (lb):

0.3

Product Weight (kg):

0.14

Product Height (in):

5.5

Product Length (in):

1.18

Product Width (in):

2.44

Product Height (cm):

14

Product Length (cm):

3

Product Width (cm):

6.2

*1: "Under" is displayed when the illuminance is less than 5 lx (0.46 fc) or the Tcp is less than 1,600 K, and "Over" is displayed when the illuminance is over 10,000 lx (929 fc) or the Tcp is over 40,000 K.

*2: Tcp is Température de Couleur Proximale (Correlated Color Temperature).

WHAT'S IN THE BOX

Software

SEKONIC LD App

Recommended Environment:iOS 16.0 or later / Android OS 11.0 or later

App Versions

Free App

The real magic happens when the C-4000 is connected to the Sekonic LD Free App. Utilizing Bluetooth connectivity along with smartphone or tablet compatible (Apple ® or Android ™), remote-control measurements are transferred to your smart device. View graphs of measurements, import stored data, configure settings and View CIE 1931, Spectrum, CRI and TM-30-18 color rendering properties.

Paid App

With the Sekonic LD upgraded PAID version of the App, a variety of features and functions are available at your fingertips providing a smooth and convenient workflow. From a quick and easy measure and record process to sharable measurement reports on the fly, the Sekonic LD upgrade App compatible with Apple ® or Android ™ smartphones or tablets offers the perfect extension to your C-4000 Spectrometer experience.

Note

Depending on your region, you may not be able to download SEKONIC LD.

MAC OS C-4000 Utility
WINDOWS C-4000 Utility

*Coming Soon

App