GUIDED WAVE RADAR LEVEL GAUGE WITH EXPLOSION PROOF HOUSING AND FLOATING BARRIER

A guided wave radar level gauge comprises a housing (10) providing explosion proof protection and having an intrinsically safe output (27), and a transmission line probe (8) connected to the IS output. The housing encloses radar level gauge circuitry (14, 15, 16, 17) which is incompatible with intri...

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Bibliographische Detailangaben
Hauptverfasser:	HAKAN NYBERG, NILSSON LEIF, MIKAEL ERIKSSON
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A guided wave radar level gauge comprises a housing (10) providing explosion proof protection and having an intrinsically safe output (27), and a transmission line probe (8) connected to the IS output. The housing encloses radar level gauge circuitry (14, 15, 16, 17) which is incompatible with intrinsic safety requirements, a microwave unit (20) connected to the IS output, an electrical barrier (25) connected between the RLG circuitry and the microwave unit, the electrical barrier having a barrier ground potential which is independent from the grounded housing wall, and a set of blocking capacitors (28) connected between the microwave unit and the IS output. 一种导波雷达物位计，包括提供防爆保护并且具有本质安全输出(27)的壳体(10)、连接至IS输出的传输线探头(8)。该壳体封装：与本质安全要求不兼容的雷达物位计电路(14，15，16，17)；连接至IS输出的微波单元(20)；连接在RLG电路与微波单元之间的电屏障(25)，该电屏障具有独立于接地壳体壁的屏障地电位；以及连接在微波单元与IS输出之间的一组隔直电容器(28)。