Specific Sensors

Specific sensors are the simplest type of online analyzers. They are generally used to measure either the physical parameters of a gas or liquid stream, such as pH, temperature, turbidity, or oxidation-reduction potential, or easily detected compounds, such as oxygen, cyanide, or chlorine. In most cases, these sensors have continuous output.

Sensors are relatively inexpensive and easy to install and require little or no maintenance. While they can be selective and sensitive, specific sensors can become fouled by constant contact with process materials, particularly those with high particule concentration.

While the output from specific sensors is considered to be in real time, all process analyzers, including sensors, experience lag times and stabilization times. The lag time is the time required for the process material to pass through the sensor's sampling element. The stabilization time, called T90, is the time required for the sensor to reach 90% of its final output. Typical T90 times are about 20 to 60 sec.

Project Earth Conservation

Project Earth Conservation

Get All The Support And Guidance You Need To Be A Success At Helping Save The Earth. This Book Is One Of The Most Valuable Resources In The World When It Comes To How To Recycle to Create a Better Future for Our Children.

Get My Free Ebook


Post a comment