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Home > Model 7xD High Temperature / High Pressure Coaxial Guided Wave Radar Probe
 Model 7xD High Temperature / High Pressure Coaxial Guided Wave Radar Probe   Printer Friendly Version
Choosing the proper Guided Wave Radar (GWR) probe is the most important decision in the application process. The probe design establishes fundamental performance characteristics.

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.

The model 7xD probe is a high temperature high pressure probe rated to 800F (430 C) and 6250 psi (430 bar). It is available in two sizes: the standard is rated for viscosities up to 500cP and the enlarged is rated to 2000cP.
Operating Principle Features Options Downloads
 
Guided Wave Radar is based upon the principle of TDR (Time Domain Relectometry). 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.

 

  • Temperatures to +426° C (+800° F)
  • Pressures to 430 bar (6250 psig)
  • Cryogenic applications to -195° C (-320° F)
   

  • NPT, BSP and flange connections
  • FM, CSA and ATEX approvals
 
 Literature: (US English)
  Technology Brochure
  Sales Literature - Industrial
  Hart Instruction Maual
  Special Fieldbus Instruction Manual