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Eclipse® Steam
Coaxial Probes
Model 7xS
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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 +650° F (+343° C)
- Pressures to 2400 psig (165 bar)
- Probe design optimized to effectively measure levels in saturated steam applications
- A robust probe that withstands the high temperature, high pressure and corrosive nature of steam applications
- Patented steam compensation
- Specifically designed for use with Eclipse Guided Wave Radar transmitters
Applications:
- Boilers
- De-aerators
- Feed water heaters
Options:
- NPT, BSP, and flange connections
- FM, CSA, and ATEX approvals
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