Optical Flow Meter-Cosaxentaur Vietnam-Stc Vietnam

Optical Head:
An insertion-style optical head as shown in below figure is designed for use in pipes from 2 to 38 inches nominal bore. The optical system is incorporated in a 3/4” stainless steel sleeve, which is installed in the pipe in a similar manner as thermal dispersion mass flow meters. The stainless steel optical head incorporates the delivery and collecting optical system assemblies, which are positioned perpendicularly to the flange bore and are insulated from the gas by optical windows.

The optical head is typically designed for single-point measurement which is located in the center of the pipe or at a quarter-radius from the pipe wall.

Signal Processing Unit:
The signal processing unit ( or opto-electronic converter ) is designed on one electronic board which fits into a normal NEMA or an explosion proof enclosure. The board incorporates a digital signal processing (DSP) chip with internal analog-to-digital conversion at sample rates up to 12MHz. It has inputs for pressure and temperature transmitters, so that various flow calculations can be performed.