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Magnetrol - Model Eclipse 700 -Guided Wave Radar Transmitter
The Eclipse Model 700 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.
This single transmitter can be used in a wide variety of applications ranging from very light hydrocarbons to water-based media.
One universal Model 700 transmitter can be used and interchanged with several different probe types and offers enhanced reliability as it is certified for use in critical SIL 2/3 hardware safety loops.
The ECLIPSE Model 700 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.
- Multivariable, two-wire, 24 VDC loop-powered transmitter for level, interface, volume, or flow.
- 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 viewing of configuration parameters and echo curve.
- Proactive diagnostics advise not only what is wrong, but also offer troubleshooting tips.
Options
- Nine common tank shapes for volumetric output
- 30-point custom strapping table for uncommonlyshaped tanks.
- Two standard flumes and four standard weirs of various sizes for flow measurement.
- Generic flow equation for non-standard channels.
- Probe designs up to +200 °C/431 bar (+400 °F/ 6250 psi).
- Cryogenic applications down to -196 °C (-320 °F).
- SIL certification allows use in SIL 2/3 Loops
- No moving parts.
ECLIPSE Guided Wave Radar is based upon the technology of TDR (Time Domain Reflectometry). TDR utilizes pulses of electromagnetic energy transmitted down a wave guide (probe). When a pulse reaches a surface that has a higher dielectric constant than the air (εr = 1) in which it is traveling, a portion of the pulse is reflected. The transit time of the pulse is then measured via high speed timing circuitry that provides an accurate measure of the liquid (or solids) level. The amplitude of the reflection depends on the dielectric constant of the product. The higher the dielectric constant, the larger is the reflection.
The rate of flow through the valve body raises or lowers the disc. This in turn raises or lowers the magnetic sleeve, within its sealed non-magnetic barrier tube. On an increasing flow rate, the magnetic sleeve rises into the field of the permanent magnet, located outside the barrier tube, actuating the attached switch mechanism. When the flow rate drops, below the rate for which the flow disc is calibrated, a reversal of this action occurs.