Pfannenberg Catalogue

Introduction
Visual signaling devices by Pfannenberg
Our comprehensive range includes:
• xenon fl ashing lights
• halogen blinking and continuous lights
• blinking and continuous lights with fi lament lamps
• LED multifunction lights
• rotating mirror lights
• panel mount blinking and continuous indicators
• combination lights
• traffic light lights
• signal towers
• visual signaling devices for the Ex area
A large proportion of our signaling devices are provided with the
following features, which make their use in special applications
possible, such as in safety-relevant applications:
• synchronisation of several lights
• redundant structure
• integrated function monitoring
• limitation of initial current
Basic principles of optics
Light moves as electromagnetic wave, which are
distinguished from one another by their wavelength.
The wavelengths of that part of the electromagnetic
spectrum, which are visible to the human eye lie
between 380 nm and 780 nm and are called the
visible spectrum.
The visible spectrum itself is in turn made up of different
electromagnetic waves that generate the perception
of different colours in our eyes. The limits of the visible
spectrum are represented by infrared and ultra-violet
light.
The spectrum visible to the human eye (light)
Ultra-violet
Infrared
400 nm 450 nm 500 nm 550 nm 600 nm 650 nm 700 nm
Cosmic Gamma- hard, medium, soft UV- Infrared Terrahertz Radar UHF UKW Medium wave high, medium, low
radiation radiation X-ray radiation C/B/A radiation radiation Microwave oven VHF Short wave Long wave frequency
ultra-violet Microwaves Radio AC currents
i fm 1 pm 1 Å 1 nm 1 μm 1 mm 1 cm 1 m 1 km 1 Mm
10 -15 10 -14 10 -13 10 -12 10 -11 10 -10 10 -9 10 -8 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7
10 23 10 22 10 21 10 20 10 19 10 18 10 17 10 16 10 15 10 14 10 13 10 12 10 11 10 10 10 9 10 8 10 7 10 6 10 5 10 4 10 3 10 2
1 Zetta-Hz 1 Exa-Hz 1 Peta-Hz 1 Tera-Hz 1 Giga-Hz 1 Mega-Hz 1 Kilo-Hz
20