Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (2024)

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (1)

Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter DESCRIPTION The new Eclipse® Model 706 High Performance Transmitter is a loop-powered, 24 VDC level transmitter that is based upon the proven and accepted technology of Guided Wave Radar (GWR). Encompassing a number of significant engineering accomplishments, this leading edge level transmitter is designed to provide measurement performance well beyond that of many of the more traditional technologies. Measures Level, Interface, Volume and Flow Utilizing “diode switching” technology, along with the most comprehensive probe offering on the market, this single transmitter can be used in a wide variety of applications ranging from very light hydrocarbons to waterbased media. The innovative angled, dual compartment enclosure is now a common sight in the industry. This enclosure, first brought to the industry by Magnetrol® in 1998, is angled to maximize ease of wiring, configuration, and viewing of the versatile graphic LCD display. One universal Model 706 transmitter can be used and interchanged with all probe types, and offers enhanced reliability as it is suitable for use in critical SIL 2 hardware safety loops. The ECLIPSE Model 706 supports both the FDT/DTM and Enhanced DD (EDDL) standards, which allow viewing of valuable configuration and diagnostic information such as the echo curve in tools such as PACTware ™, AMS Device Manager, and various HART ® Field Communicators. APPLICATIONS MEDIA: Liquids, solids, or slurries; hydrocarbons to waterbased media (Dielectric Constant εr = 1.2–100) VESSELS: Most process or storage vessels up to rated probe temperature and pressure. CONDITIONS: All level measurement and control applications including process conditions exhibiting visible vapors, foam, surface agitation, bubbling or boiling, high fill/empty rates, low level and varying dielectric media or specific gravity.

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (2)

FEATURES • Multivariable, two-wire, 24 VDC loop-powered transmitter for level, interface, volume, or flow. • Diode switching technology offers best-in-class signal strength and signal-to-noise ratio (SNR) resulting in enhanced capability in difficult low dielectric applications. • Level measurement not affected by changing media characteristics. • No need to move levels for calibration. • Overfill Capable probes allow for “true level” measurement all the way up to the process seal, without the need for special algorithms. • 4-button keypad and graphic LCD display allow for convenient...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (3)

EMULSION LAYERS OVERFILL CAPABILITY As emulsion layers, also called “rag layers,” can decrease the strength of the reflected signal in an interface application, GWR transmitters are typically recommended for applications that have clean, distinct layers. Although agencies like WHG or VLAREM certify Overfill proof protection, defined as the tested, reliable operation when the transmitter is used as overfill alarm, it is assumed in their analysis that the installation is designed in such a way that the vessel or side mounted cage cannot physically overfill. However, the ECLIPSE Model 706,...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (4)

PROBE THREE With one basic ECLIPSE Model 706 transmitter that operates with all probes, choosing the proper Guided Wave Radar (GWR) probe is the most important decision in the application process. The probe configuration establishes fundamental performance characteristics. All ECLIPSE Model 706 probes can be described by three basic configurations: • Coaxial Each of these probe configurations has specific strengths and weaknesses. Although there can be overlap, and different probes can certainly be used in similar applications, it is important to understand their basic differences so that...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (5)

PROBE THREE OPTIONAL FLUSHING CONNECTION The maintenance of coaxial GWR probes in applications suffering from buildup or crystallization can be significantly improved by using an optional flushing connection. This flushing connection is a metal extension with a port welded above the process connection. The port allows the user to purge the inside of the coaxial GWR probe during routine maintenance. Note: The best approach to eliminate the effects of condensation or crystallization is to install adequate insulation or heat tracing (steam or electrical). A flushing connection is no substitute...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (6)

PROBE THREE TWIN CABLE FLEXIBLE PROBES The relationship of the Twin Cable probe design to a coaxial probe design is similar to that of older, twin-lead, antenna lead-in to modern, coaxial cable. 300-ohm twinlead cable simply does not have the efficiency of 75-ohm coaxial cable, making the parallel conductor design less sensitive than the concentric coaxial. See Figure 2. This translates into Twin Cable GWR probes having the ability to measure dielectrics down to εr ≥1.7. Figure 3 shows the single element design and how the electromagnetic pulse effectively expands into a teardrop shape as...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (7)

GUIDE TWIN CABLE GWR PROBE signal propagation SINGLE ROD/CABLE PROBE signal propagation signal propagation end view GWR Description Probe¿ Max. Overfill Vacuum ƒ Pressure Safe Coaxial GWR Probes—Liquids Standard Level/Interface Tank/Chamber ε 1.4–100 -40° to +400° F r Temperature (-40° to +200° C) High -320° to +400° F ε 1.4–100 (-196° to +200° C) Pressure Level/Interface Tank/Chamber r High Temp./ Level/Interface Tank/Chamber ε 1.4–100 -320° to +850° F r High Press. (-196° to +450° C) Steam Saturated -40° to +650° F Tank/Chamber εr 10–100 (-40° to +345° C) Probe Steam Standard Temperature...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (8)

FUNCTIONAL/PHYSICAL System Design Measurement Principle Guided Wave Radar based on Time Domain Reflectometry (TDR) Input Measured Variable Level, as determined by GWR time of flight 6 inches to 100 feet (15 cm to 30 m); Model 7yS Probe 20 feet (610 cm) max. Output Type 4 to 20 mA with HART: 3.8 mA to 20.5 mA useable (per NAMUR NE43) FOUNDATION™ fieldbus: H1 (ITK Ver. 6.1.1) Modbus Analog: Digital Display: Loop Resistance Diagnostic Alarm Selectable: 3.6 mA, 22 mA (meets requirements of NAMUR NE 43), or HOLD last output Diagnostic Indication Meets requirements of NAMUR NE107 User Interface...

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Eclipse® Model 706 High Performance Guided Wave Radar Level Transmitter - Magnetrol - AMETEK - PDF Catalogs | Technical Documentation (2024)

FAQs

What is the difference between guided wave radar and radar? ›

Guided Wave Radar (GWR) uses a probe to measure to guide high frequency, electromagnetic waves as they travel down from a transmitter to the media being measured. Non-Contacting Radar sends down an electromagnetic wave through the air, it then reflects off the media and returns back to the device.

What is a guided wave radar level transmitter? ›

Using radar frequencies, guided in a probe going into the monitored vessel, guided-wave radar level measurement provides continuous, reliable measurements with high accuracy. The radar wave being guided by the probe, the wave energy remains high which allows measurement even in harsh conditions.

What are the disadvantages of guided wave radar level measurement? ›

Disadvantages: Installation Complexity: GWR transmitters require careful installation, including positioning the probe correctly and ensuring proper calibration for accurate measurements. Improper installation can lead to inaccuracies in level readings.

How do you calibrate a guided wave radar? ›

Guided wave radars need no additional calibration. Other technologies require users to empty the tank to show the sensor different levels like 0%, 50%, and 100%.

When should I use radar level transmitter? ›

The primary difference between a radar and an ultrasonic instrument is the type the wave used: radio waves rather than sound waves. Radar level transmitters are the ideal solution for precise level measurement when reliability and precision are critical.

What are the disadvantages of radar type level transmitter? ›

Dust particles in the air can scatter or absorb radar signals, reducing the signal strength and accuracy of level measurements. Regular maintenance and cleaning may be necessary to ensure optimal performance in such environments.

What is the difference between CW radar and FM CW radar? ›

The CW radar can measure the Doppler frequency of the target, but it cannot measure the target range. The frequency-modulated CW radar (FM–CW) can measure both the range and Doppler frequency of the target. In the FM–CW radar, the transmitted frequency changed as a function of time in a known manner.

What are the two main types of radar? ›

Based on configuration, scanning pattern, and application, radar is classified into several varieties. The most basic radar systems are pulsed and monostatic. Pulsed systems transmit electromagnetic energy in periodic bursts or pulses.

What are the advantages of guided wave radar? ›

A significant advantage of guided wave radar technology is its ability to measure the interface between two liquids, in addition to the top fluid level. A typical application is oil and water, where the upper liquid has a lower density and dielectric constant compared to water.

How is Doppler radar different from regular radar? ›

Conventional radar provides information about the location and intensity of precipitation associated with a storm, while Doppler radar adds the capability to discern air motions within a storm. which are dangerous to aircraft.

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