Flour Colour Monitoring Device

The reliable solution for


  • Continuous flour & bran color supervision
  • Ideal for internal quality control
  • Calibration according to %-Ash content
  • Internal registration of 24 hour period
  • Simple installation into available run pipes

Technical Specification

Measuring Unit:

  • Measuring pipe diameter: 120 ,150 oder 200 mm
  • Measuring pipe length: 200 mm
  • Protection type: ATEX Zone 22

Control Electronic:

  • Panel mounting: 142 x 70 x 32 mm (B x H x T)
    – Protection, front side: IP 54
    – Power supply: 24 V DC, 2 A
  • Wall-Box: 200 x 300 x 120 mm (B x H x T)
    – Protection Type: IP 54
    – Power supply: 230 V AC, 1 A
  • PC – Software: Windows 95 or higher required
  • Interface: RS 232, RS 485


  • Proven Technology
  • Economical Solution
  • Reliable & Robust
  • Maintenance-Free
  • Made in Germany
  • Simple Installation
  • Insensitive to Vibrations
  • High Capacity
  • Versatile Installations
  • Food Grade Applications


  • The FC 2 flour color controller is used for continuous control of flour colour and ash content.
  • It consists of a measuring pipe with a glass insert (length of insert = 200 mm, diameter = 120, 150 or 200 mm). The device is normally installed in the run-off pipe immediately downstream of the flour worm. The measuring pipe is fitted with a special optical sensor which continuously measures the reflection of the flour being conveyed through the pipe. The degree of this reflection is always determined by the color or lightness of the flour.
  • The evaluation unit of the monitoring system processes the measuring signal and establishes a mean value. This signal is shown continuously on a digital display. In case of a given grain mixture, it is also possible to compensate for the crude ash content of the flour. The measuring signal is automatically controlled by two adjustable limit values. It is possible to register the flour colour over a period of time by means of a recording unit. We also offer a RS 232/485 interface for data transfers and display of values on a Personal Computer.
  • The constant display and control of the transient lightness value help to make the task of the mill supervision simpler and safer. A particular advantage of this system is the fact that flour sieve defects in the plansifter are immediately identified and relayed to the operator. Not only flour types, but also bran can be monitored constantly by this system. This means that milling errors can be identified immediately.
Technical Specifications
Supply Voltage400 Volt, 50/60 Hz, 10A
Motor3 x 400V. 0.75kW via integrated frequency converter
Rotor RPMRC1/2 600 RPM, RC3 450 RPM
Output range Model RC 10.5 20m3/h, max.: 4 t/h
Output range Model RC 20.5 20m3/h, max.: 10 t/h
Output range Model RC 31.0 35m3/h, max.: 18 t/h
Accuracy+/- 0,5 % of the measuring range
Dimensions: Pipe DiameterRC 1/2 = 150mm, RC 3 = 200mm
Dimensions: Weigher HeightRC 1/2 = 800mm, RC 3 = 950mm
Dimensions: Weigher DiameterRC 1/2 = 500mm, RC 3 = 600mm
ColourRAL 7032
Type of ProtectionATEX Zone 22
ControlsPanel Mounting: 96 x 48 x 150 mm (W x H x D)
Wall-Box Dimensions200 X 300 x 180 mm (W xHx D)
Tye of ProtectionIP 54
Technical specifications subject to change due to continuous development