Flow Instruments, Condenser Instruments, Condenser Services and Engineering Serivces from Intek

Circulating Water Flow and Fouling Sensors

This unique sensor allows you – for the first time – to positively differentiate between steam-side and water-side causes of excessive back pressure.

Its electronic output alerts you to tube fouling, either abrupt or gradual, permitting planned cleanings and maintenance, avoiding forced outages. The flow rate and temperature rise of circulating water can now be directly measured through individual tubes, with greater accuracy than traditional estimates. Flow rate deviations can also signal a degradation in circulating water pump performance.

Circulating Water Flow and Fouling meter

What Are the Benefits?

  • Positive indication of need for cleaning or reverse flushing
  • Quantifies effect on efficiency of water-side fouling
  • Provides data for determining heat transfer coefficient
  • Monitors effectiveness of pre-screening, water treatment, cleaning systems and reverse flushing

The Rheotherm flow and fouling sensor is a valuable tool for decision-makers, providing accurate real-time data for more precise identification of water-side causes of condenser problems. It reduces the man-hours spent in physical diagnostic inspections, permits more orderly maintenance scheduling, and lowers the risk of untimely outages. Case Studies

How Do They Work?

The sensors use Intek’s time-tested Rheotherm flow sensing technology to determine circulating water flow rates.  With no moving parts and an unobstructed flow path, they provide reliable, maintenance-free operation.

The sensor output goes to a local electronics unit that has data storage capability. The data can also be routed to a DCS, using output options including analog 4/20 mA, OPC, TCP/IP, and MODBUS.


Depending on condenser size, four to twelve Rheotherm sensors are installed at the outlet end of various tubes in the outlet water box. The process for installation is a standard in the power industry and used worldwide for tube sheet protective epoxy coatings. The epoxy adhesive is used to hold the sensors in place and protect the signal transmission wiring. External electronics mounted nearby compute and transmit individual tube flow rates and outlet temperatures.

CWFF installed in tubesheet

How Do I Get One?

To learn more about this unique instrument and how it can benefit your plant’s operation, review the documents below and Complete the CWFF Application Data Sheet (link below) and send to us using the form on this page (be sure to attach the completed form).”

Rheotherm Circulating Water Flow and Fouling Sensor System Literature (PDF)

Circulating Water Flow and Fouling Meters: A Tool for Reducing Back Pressure (PDF)

Circulating Water Flow and Fouling Application Data Sheet (download document)

Have A Question?
Required fields are indicated with an ‘*’Name*




Attach File