Starting at $8,015.00
  • Usually ships in 7 weeks



  • Extremely high process temperatures
  • Clamp-on—no process shutdown to install
  • No penetration into the pipe
  • No pressure drop
  • Bi-directional measurement
  • No drifting or periodic calibration
  • Little to no maintenance
  • Low flow measurement (down to 0.03 m/s or 0.1 ft/s)

This product is an accessory for the following products:


The Panametrics C-ET clamp-on extended temperature (C-ET) range transducer system provides liquid flow measurement in very low- or very hightemperature applications. It represents Panametrics latest generation of non-contact, demanding measurement transducers and capitalizes on more than 20 years of experience from the OKS transducer system.

The C-ET system is designed to isolate the transducer from the extreme process conditions, allowing it to measure high temperature hydrocarbon liquids, superheated water, heat transfer oils and cryogenic liquids. In addition, the C-ET system retains all of the characteristics that make ultrasonic technology best for critical process measurements under harsh conditions.

The C-ET system utilizes a solid waveguide that resembles a thin ice hockey stick, along with our C-RS transducers. The robust design is an improvement to the original OKS buffer system released in the 1980s. It maximizes the signal-tonoise ratio for a more accurate flow measurement and maximizes the heat exchange away from the C-RS transducer. With ultrasonic operating frequencies of 0.5 and 1 MHz, the C-ET waveguide transducer system can be used on a variety of liquids, from superheated water and hot, heavy hydrocarbons, to cryogenic liquefied natural gas. The waveguide will keep the piezoelectric element considerably within its operating temperature, thus ensuring an indefinite life for the transducer.

The C-ET transducer system can be used not only in a variety of applications, but can also be installed in numerous convenient ways. For smaller sized pipes, use the Panametrics stainless steel V-style clamping fixture to accurately align the transducers. For larger sized pipes, the PI-style stainless chain fixture is used to provide a flexible mounting solution. With either fixture, a solid couplant is used to mount transducers to the pipe, minimizing future maintenance.

When combined with any of the DigitalFlow™ ultrasonic flow meters, the C-ET transducer system takes advantage of Panametrics patented Correlation Transit-Time™ technique and advanced digitalsignal processing. The C-ET transducer system and DigitalFlow flow meters provide the proven technology and accuracy that have made Panametrics a leader in innovative instrumentation technology.