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The original 2-Wire Guided Wave Radar concept

20 October 2008

It has been 10 years since Magnetrol released the Eclipse Model 705, the first 2-Wire Guided Wave Radar (GWR) level transmitter that measured liquid level, independent of liquid characteristics. No need for calibration, a broad application coverage, ease of configuration and commissioning, integration without piping changes, and enhanced reliability are a few of the reasons for its rapid acceptance in the oil and gas industries.

The original 2-Wire Guided Wave Radar concept
The original 2-Wire Guided Wave Radar concept

The principle of operation is based on time-of-flight measurement of high frequency pulses sent down a fixed transmission line reflecting off the liquid surface. The initial product involved one amplifier with two probe types. The product offering now includes one universal amplifier with a complete series of application-oriented GWR probes.

Eclipse is one of the safest process level devices on the market with a SFF fraction of > 91%, making it suitable for applications requiring SIL 2 hardware compliance.

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