Post on 28-Feb-2018
7/25/2019 Fibre Optic Technique
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0809
7/25/2019 Fibre Optic Technique
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BFI Automation Dipl.-Ing. K.-H. Mindermann GmbH, Eggerscheidter Str. 57, D-40883 RatingenTel. +49 (0) 2102 96 82 0, Fax +49 (0) 2102 9682 42
EMail: info@bfi-automation.de
technology for your future
AutomationBFI
SYSTEM 3000 / 4000
COMPACT FLAME CONTROLLER
FIBREOPTIC TECHNIQUE
TECHNICAL DESCRIPTION
EDITION: TB LWL-SZ1
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Fibre optic technique
- Temperatures up to 200C
- Alternative to Ex-housings- Small, very robust type of construction- Protection IP 68
Application
The fibre optic flame scanner series is an exten-
sion to the flame monitoring and evaluation sy-stems 3000/4000whilst maintaining full, compa-tibility. A fibre optic flame scanner consists of a
robust probe, SKL, which is coupled to an opto-electronic converter, O/E-converter through aflexible length of fibre optical cable.
The compact and robust probe can withstandhigh temperatures and strong vibration. The sy-stem is therefore ideally suited for installations
where the mounting and cooling of a conventio-nal flame scanner is difficult or impossible. Themonitoring of gas turbines is a good example of
this.The probe has internal optics which project afield of view of 2.7onto the glass fibre bundle.
The assembly can withstand ambient temperatu-res of up to 200 C (for short time periods evenup to 300C). The probe and cable are delivered
together as a sealed unit. The radiation sensitiveend of the probe has a 1-thread counterpiece sothat it can be fixed onto a sight tube without the
fibre optic cable being twisted.Different types of fibre optic cable with radiationtransmission in the ultraviolett and visible or visi-
ble and and infrared spectral ranges are availa-
ble. Therefore, the scanner can be configured to
monitor the flame in the regions maximum emis-sion or best selectivitv depending on the fuelbeing used. The glass fibre bundle is shielded by
a silicon insulation which is in turn protected by aflexible steel cladding. The cable is water- anddustproof, as weIl as being resistant to acids and
high temperatures.The Iength of the fibre optic cable depends onthe Iocal installation and is confectioned accor-
dingIy. As there is some loss of radiation inten-sitv, we recommend the use of length betweentwo and five meters. Longer cables are possible,
but especially for ultraviolet detectors testsshould be run beforehand to ensure that no pro-blems will develop.
In the optoelectronic converter, the radiation fallson a detector which delivers an electric signal. A
detector with a sensitivity range optimized for thetype of fuel to be monitored is used. The follo-wing electronics is similar to that of the standard
scanners. The converter is designed to be con-nected to the 3000/4000flame amplifier modu-les.
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AutomationBFI
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Dimension
Technical data
Spectral transmission of theIR/VIS-fibre optic: 430.- 2.400 nm
Spectral transmission of theUV/VIS- fibre optic: 260 - 1.200 nm
Fibre optic cable diameter: : approximate 10 mm
Cable length: optional: 2m to 5m (max. 10m)
Minimum curvature radius: >30mm
Ambient temperature: up to 200C (briefly 300C max.)
Sight tube thread: ISO 228 G1
Protection: probe IP 68,O/E- converter IP 65
technology for your future
AutomationBFI
probe SKL
O/E-converter
fibre optic cable
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AutomationBFI
Type
Ser.-No.:
24Vdc
Germany
120
155
106
G1
152
122
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