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Home > Products > OFT-7 SERIES FURNACE VIEWING TELEVISION SYSTEMS OFT-7 SERIES FURNACE VIEWING TELEVISION SYSTEMS 1. OFT-7 FURNACE VIEWING TELEVISION SYSTEM 2. OFT-7A and OFT-7A-DS FURNACE VIEWING TELEVISION SYSTEM 3. SPECIFICATION SHEET 1. OFT-7 FURNACE VIEWING TELEVISION SYSTEM The OFT-7 system represents the current state of the art in furnace and boiler viewing television. This system was designed for applications where water-cooling is not available, but very high temperature operation is required. The principal features of the OFT -7 system are a very small overall diameter of only 35mm, and the provision of an automatic retraction system as standard. As with all Industrial Television furnace viewing systems, the OFT -7 provides high-quality pictures by viewing the furnace interior directly with no windows to degrade the image or require cleaning. Cold clean air is passed over the optical surfaces of the system to keep them clean and provide secondary cooling; additional layers of cooled and ambient air provide primary cooling for operation at furnace temperatures up to 1600°C. Because of the very arduous conditions when using air-only cooling at these temperatures, the system incorporates an automatic retraction system as standard to withdraw the assembly from the hot area in the event of any loss of cooling air, power, or in the event of temperature excursion outside defined limits. The system is designed so that in the event of alarm activation it latches out and requires manual reinsertion into the hot zone; this ensures that the source of any alarm condition must be investigated, prohibiting the overriding of the system by the operator following a transient alarm. It is possible at specific user request to provide remote re-insertion, after the alarm condition has cleared, but we do not recommend this, as the cause of the alarm should always be investigated at the camera location. The system is fail-safe and will still retract even in the event of total failure of all services. High-efficiency filters are provided to allow operation from normal plant air, and it is possible to change these on-line without withdrawing the camera from the furnace, so the pictures are not lost to the operator, even All hardware required for a complete operating system is included and no further items are required apart from air and electrical services, and cabling between the furnace and operator's location. Open an Adobe Acrobat PDF version of this document for printing 2. OFT-7A and OFT-7A-DS* FURNACE VIEWING TELEVISION SYSTEMS The OFT-7 series systems represent the current state of the art in furnace viewing television technology; the -7A versions being designed specifically for the aluminium industry. This system was designed for applications where watercooling is not appropriate, but very high temperature operation is required. The principal features of the OFT-7 systems are a very small overall diameter of only 35mm, and the provision of an automatic retraction system as standard. A unique feature of the type OFT-7A-DS* is the incorporation of two cameras operating in different parts of the spectrum. A colour camera provides a picture of what an operator would see by looking into the furnace, whilst the second camera operates in the infra-red part of the spectrum to provide additional thermal information and also enhanced visibility at low temperatures and under conditions of fume in the furnace atmosphere. This allows the OFT-7A-DS* system to provide pictures over a wider range of in-furnace conditions than would otherwise be possible with a single-sensor system As with all Industrial Television furnace viewing systems, the OFT-7 provides high-quality pictures by viewing the furnace interior directly with no windows to degrade the image or require cleaning. Cold clean air is passed over the optical surfaces of the system to keep them clean and provide primary cooling; additional layers of cooled and ambient air provide secondary cooling for operation at furnace temperatures up to 1600oC. Because of the very arduous conditions when using air-only cooling at these temperatures, the system incorporates an automatic retraction system as standard to withdraw the assembly from the hot area in the event of any loss of cooling air, power, or in the event of temperature excursion outside defined limits. The system is designed so that in the event of alarm activation it latches out and requires manual reinsertion into the hot zone; this ensures that the source of any alarm condition must be investigated, prohibiting the overriding of the system by the operator following a transient alarm. It is possible at specific user request to provide remote re-insertion, after the alarm condition has cleared, but we do not recommend this, as the cause of the alarm should always be investigated at the camera location. The system is fail-safe and will still retract even in the event of total failure of all services. High-efficiency filters are provided to allow operation from normal plant air, and it is possible to change these on-line without withdrawing the camera from the furnace, so the pictures are not lost to the operator, even momentarily. All hardware required for a complete operating system is included and no further items are required apart from air and electrical services, and cabling between the furnace and operator's location. * Patent applied for Open an Adobe Acrobat PDF version of this document for printing TYPE OFT-7, -7A and -7A-DS FURNACE VIEWING TELEVISION SYSTEMS Specifications:
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Due to our policy of continual product development, specification may change without notice. All Industrial Television and Optics products are designed and built in Britain. |
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Unit 3, Evans Business Centre, Nobel Way, Dinnington S25 3QB Tel: +44 (0)1909 517100 Fax: +44 (0)1909 517101 |
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