High-Temperature Measurement Service Using an Ultrasonic Sensor
It is now possible to monitor the reduction of plate thickness due to corrosion or erosion, crack propagation and flow velocity at high temperature by using recently developed sensors and coupling medium for high-temperature application.
Continuous on-line thickness monitoring is possible with high accuracy on a micrometer order by using IIC's high-accuracy ultrasonic sensor, which was developed by the Research and Productivity Council (RPC) in Canada. This device is now being used in Canadian deuterium uranium reactors at temperatures around 300°C.
A high-accuracy flow meter fabricated by RPC can monitor flow velocities accurately to within 1%.
Patents: Japan: 2015086, USA: 4961347, UK: GB2212919B
Sensor features
It can be used continuously over long periods of time at 500°C. There is little change in sensitivity at high temperature. It is radiation-proof at 10 MGy.
Appearance of high-temperature sensor
Example of continuous crack monitoring (time until sensitivity falls to 6 dB)
Applications
Example of continuous monitoring of thickness reduction at high temperature
Example of continuous crack monitoring progress