Sekonic C-4000 SpectroMeter

About: Sekonic C-4000 SpectroMeter

The Sekonic Spectrometer 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 for the lighting professional. With its 2.7” color touch screen, Bluetooth enabled wireless communication and compatibility with Apple and Android 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 C-4000 offers standalone basic numeric reading from the meter, wireless remote measurements via the free Sekonic LD App and smartphone/tablet or advanced Sekonic LD paid App offer extensive functions including plot measurements.

• Measuring Color Temperature (Tcp) from 1,600K to 40,000K
• Provides Light Quality information such as Ra, ∆uv, Lux/fc,  TM-30-18 (Rf, Rg), Chromaticity coordinates (x,y) and more 
• Smartphone App ready
• Continuous/Single measurement
• USB-C connectivity for update firmware via Utility

Simplified and Clear displayed screen information

Utilizing a color touchscreen display, the C-4000 provides various numerical measurement values such as Lux, Tcp (Color temperature), ∆uv, CRI (Ra), TM-30(Rf, Rg), and CIE 1931 (x, y) in an easy-to-read display panel in the meter. Quick and ease numerical values can be checked and confirmed on-site in addition to graphs, when the optional smartphone/tablet App is connected via Bluetooth to your smartphone or tablet. Stored measured values in the C-4000 can be displayed in various display graphs including CRI index, TM-30-18, CIE 1931, and other color interruptive illumination languages with the convenience of your smartphone/ tablet. Remote measurements can be made without the risk of the operators, physical shadow corrupting the measurement or for out of reach measuring locations via your smartphone or tablet.

Compact, portable and ergonomic design

Responding to the demands of lighting designers and location technicians/ installers, the C-4000 provides a compact and portable spectrometer, that offers an impressive array of features in an ergonomic design. Two conveniently positioned physical buttons accomplish power on /off and accurate measuring operation. All other settings and mode selections are easily made via the color touch screen. A built-in USB type C connector port, provides designers/technicians quick and easy firmware updates via a connectivity cable to the PC utility providing the latest features, modifications and enhances keeping the C-4000 always at the cutting edge of lighting control.

SEKONIC LD Smartphone App

In addition to the C-4000’s ability to take measurements itself, by installing the “SEKONIC LD” standard (included) or advanced (purchased) App on your smartphone/tablet and connecting it to your C-4000 via Bluetooth, you can remotely control the C-4000 Spectrometer. View graphs of stored measurement data, configuration settings and functions remotely and much more on the C-4000 meter via the App. Data, screen shots and images can be shared with offsite designers, engineers, technicians and clients.

• C-4000 Meter – Basic numerical display
• C-4000 Meter + Basic Sekonic LD Free APP – Wireless Measurements, graphic display, imported meter memorized data all displayed via the App and your smartphone/tablet device.
• C-4000 Meter + Advanced Sekonic LD Paid App – Everything the free App offers plus plot measurements on lighting layout, add images, notes, GPS locations, date and time to each measurement, create reports in PDF, and generate measured data in CSV plus data share via your smartphone/tablet.

Specifications

• Illuminance meter class
  • JIS C 1609-1:2006 for General Class A Illuminance Meters Equivalent (excluding oblique incident light characteristics)
  • DIN 5032 Part 7 Class C Equivalent (excluding oblique incident light characteristics)
• Light receptor element: CMOS linear image sensor
• Measurement wavelength range: 380 nm to 780 nm
• Measurement range
  • Illuminance: 5 lx to 10,000 lx (0.46 fc to 929 fc)
  • Color temperature (Tcp): 1,600 K to 40,000 K
• 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 (800 lx)
• 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, 1,000 lx)
• Humidity characteristics
  • lluminance: ± 3 %
  • x, y: ± 0.006 (Light source A, 1,000 lx)
• Power Supply: AA battery (1.5V) × 2, USB bus-power
• Measurement time: Max. 10 sec, Min. 0.5 sec
• Display value: Illuminance (lx), 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 dimming
• Language: Selectable from English, French, German, Italian, Spanish, or Japanese
• Interface: USB connector (type C), Bluetooth
• Operating temperature: 5 deg. C to 35 deg. C, without condensation
• Operating humidity: 85 % or less (at 35 deg. C), without condensation
• Transportation and storage conditions: -10 deg. C to 60 deg. C, 85 % RH or less (at 35 deg. C), without condensation
• Dimensions (WxHxD): Approx. 62 x 140 x 30mm (excluding protruding part of light receiving)
• Weight: 140 g (without batteries)
• Included accessories: Light receptor cap, Soft case, Strap