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Eclipse® Interface Coaxial Probes
Model 7xT
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Choosing the proper Guided Wave Radar (GWR) probe is the most important decision in the application process. The probe configuration establishes fundamental performance characteristics. Coaxial, twin element (rod or cable) and single element (rod or cable) are the three basic configurations used today; each with specific strengths and weaknesses.
The Coaxial probe is the most efficient of all probe configurations and should be the first consideration in all applications. Analogous to the efficiency of modern, coaxial cable, coaxial probes allow almost unimpeded movement of the high frequency pulses throughout its length.
The electromagnetic field that develops between the inner rod and outer tube is completely contained. the efficiency and sensitivity of a coaxial configuration yields robust signal strength even in extremely low dielectric (εr ≥ 1.4) applications.
Literature
Additional Tools:
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Measurement Principle:
Guided Wave Radar is based upon the principle of TDR (Time Domain Reflectometry). Pulses of electromagnetic energy are transmitted down a probe. The pulse is reflected when it reaches an impedance change such as a liquid surface. The transit time is calculated and converted to level.
Features:
- Temperatures to +400° F (+200° C)
- Pressures to 1000 psig (70 bar)
- Cryogenic applications to -40° F (-40° C)
- Accurately measures interface applications where the upper medium has a dielectric constant <5 and the lower dielectric >15
Applications:
- Process vessels
- Storage vessels
- Bridles
- Bypass chambers
Options:
- NPT, BSP, and flange connections
- FM, CSA, and ATEX approvals
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