Vega FiberFlex LFXG-H, Руководство по эксплуатации

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Introduction
20 LFXG-H Installation and Operation Guide
Pulp and Paper
• Liquors
• Bleach plant chemicals
• Coating chemical storage
• Lime mud
• Wastewater treatment tanks
Chemical
• Low pressure/low vapor chemical storage
• Settlers
• Surge tanks
Food and beverage
• Food slurries
• Pastes
• Syrups
• Dough level
• Intermediate batch storage
Water and wastewater
• Settling/aeration tanks
• Clarifiers
• Sludge holding tanks
• Wet wells
Principle of operation
The gauge receives a shaped or collimated beam of radiation from the
source holder through the process material. The material in the vessel
shields part of the detector from exposure to the radiation field. As the
process material level decreases, the detector senses more radiation, and
vice versa.
Calibrating the gauge associates the detector readings (or counts) with the
level of the material in engineering units. The output range of the gauge is a
4 ... 20 mA current loop signal, in proportion to the level of the process.