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Optics for devices with fibre optic cables enable reliable detection of hot objects, even at high ambient temperatures.
Different sizes and viewing angles allow the detection area to be adapted to the distance and installation conditions. Matching accessories also simplify installation and protect the optics from contamination.
| Type | Article-no. | Viewing angle | Ambient temperature |
| OAA 154 | 6049B | 1,5° | up to +150 °C |
| OAA 154 H | 6049A | 1,5° | up to +290 °C |
| OAA 204 | 6043A | 2° | up to +150 °C |
| OAA 404 | 6050A | 4° | up to +150 °C |
| OAA 703 | 6048A | 7° | up to +150 °C |
| OAA 264 | 6047A | 2 x 25° | up to +150 °C |
| Type | Article-No. | Viewing angle | Ambient temperature |
| OACF 154 | 6036O | 1,5° | up to +290 C |
| OACF 154 H | 6036R | 1,5° | up to +290 C, radiant heat on the optics side: +600 °C |
| OACF 204 | 6036K | 2° | up to +290 C |
| OACF 671 | 6037H | 20° | up to +290 C |
| OACF 704 | 6036L | 7° | up to +290 C |
| OACF 672 H | 6037E | 20° | up to +290 C |
| Type | Article-No. | Viewing angle | Ambient temperature |
| OADF 104 | 6039A | 1,7° | up to +290 °C |
| OATF 154 | 6036F | 1,5° | up to +290 °C |
| Description | Type | Artikel-No. | Diameter | Material | Suitable for | More |
| Air purge attachment | OL 34 | 9828Q | 57 mm | Stainless steel | OKA, OAA, LAA, LSA, LRA, LTA | M55 thread for optional protective tube |
| Air purge attachment | OL 44 | 9828B | 25 mm | Stainless steel | OAC, OACF |
| Optic | 1m | 2m | 3m | 4m | 5m |
| OAA 154 | 40 mm | 65 mm | 100 mm | 135 mm | 170 mm |
| OAA 204 | 40 mm | 75 mm | 130 mm | 185 mm | 240 mm |
| OAA 404 | 70 mm | 130 mm | 210 mm | 290 mm | 370 mm |
| OAA 703 | 70 mm | 170 mm | 270 mm | 370 mm | 470 mm |
| OAA 264 | 40 x 350 mm | 75 x 950 mm | 130 x 1550 mm | 185 x 2150 mm | 240 x 2750 mm |
| OACF 154 | 25 mm | 45 mm | 80 mm | 115 mm | 150 mm |
| OACF 204 | 40 mm | 95 mm | 150 mm | 205 mm | 260 mm |
| OACF 704 | 70 mm | 170 mm | 270 mm | 370 mm | 470 mm |
What is the function of the optics in a hot metal detector?
The optics collect the infrared radiation emitted by the hot object and transmit it to the hot metal detector via the fibre optic cable. This allows the sensor electronics to be mounted in a protected location outside the immediate hot zone.
How does the viewing angle of the optics affect detection?
Together with the detection distance, the viewing angle determines the size of the detection area. A narrow viewing angle allows targeted detection, while a wider viewing angle covers a correspondingly larger area. The actual field of view of each optic is shown in the table on this page.
What temperatures are the optics suitable for?
Depending on the version, optics are available for ambient temperatures up to +150 °C or +290 °C. Additional versions are available for particularly high thermal loads. Certain versions can withstand radiant heat up to +600 °C on the optics side. Always refer to the technical specifications of the individual optics.
Further technical information on the listed optics can be found in our technical datasheets. Matching fibre optic cables in various lengths provide a flexible connection between the optics and the sensor.
Support with selection
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