Flame Scanner Compact Version

KHM 20

Robust Flame Scanner Compact Version for harsh industrial use in intermittent operation.

Robust IP 65 housing
Easy to install and connect
Flame signal analyzable with the KLCcom software

Description

The KHM 20 is a Flame Scanner Compact Version that has been specially developed for harsh industrial use in single burner systems and in particular in conjunction with programmable logic controllers (e.g. PLC). The patented evaluation of the flame signal takes place via the flicker frequency of the radiation of the incoming flame. All types of flames are detected by the automatic sensitivity evaluation. No adjustments are required for commissioning or maintenance.

The KHM 20 only evaluates the flickering of the flame to be monitored; direct light radiation and constant frequencies do not lead to flame detection. Constant light radiation and any constant frequencies do not lead to permanent flame detection. Interfering extraneous light sources, e.g. from fluorescent tubes or low-frequency background radiation from glowing brickwork, are suppressed. Unwanted influences on flame detection can thus be avoided.

The adapter, which serves as the flame monitor's interface to the combustion chamber, can be adapted to specific requirements using optionally available lenses, filters and apertures. An LED as an optical interface makes it possible to read out relevant operating parameters, such as the occurrence of flame modulation, the current switching status, depending on the flame signal or the possible serial number.

Technical Data

Sensor: Semiconductor (380 to 1150 nm)
Operating mode: intermittent
Optical alignment: axial
Switch-on threshold: 25 Hz
Switch-off threshold: 10 Hz
Switch-on delay: typically 0.5 s
Switch-off delay: < 0.5 s
Installation position: any
Supply voltage: 230 V AC (optional 120 V AC, 24 V AC, 24 V DC)
Current consumption: max. 5.5 mA
Operating temperature: -20 °C to +60 °C
Protection: IP 65
Protection class: I, III for 24 V DC
Switching output: open collector
Max. Switching current: 25 mA
Max. Switching capacity: 0.6 W
Max. Switching voltage: 280 V AC / 400 V DC
Weight: 0.52 kg

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Everything you need

Do you have a question about our service portfolio, need planning support for a project or are you looking for a specialist in flame monitoring? Then please contact us.