Request a Quote

The Preso COIN flow meter accomodates most flows, even the most abrasive. Accuracy and reliability are achieved by its rugged construction, practical design, and simple principle of operation. It stands alone in its ability to maintain the neccessary square root relationship between flow rate and differential pressure for almost any type of flow:

• Clean liquids
• High viscosity fluids
• Steam
• Slurries
• Corrosive processes
• Gas/air

Even viscosity up to 3,000 centipoise does not affect the accuracy of the COIN flowmeter. The flow coefficient stays highly predictable down to the remarkably low Reynolds number of 300. This makes the series COIN flow meter ideal for such traditionally difficult-to-meter applications as fuel oil, waste water, coal tar, iron ores, black liquor, and others.

Principle of Operation

The basic flow equation for the COIN series is derived from Bernoulli's Theorem (energy balance and the continuity equation). An engineered restriction creates a differential pressure that equates to a mass or volumetric rate of flow. Different height (H) over diameter(D) ratios are specified to handle different flow ranges. A COIN flow meter can solve your most difficult flow measurement applicatons. You get accurate, reliable results from the COIN flowmeter.

• Simple principle of operation allows functionality on any fluid
• Long life without maintenance, does not foul
• Minimal upstream and downstream piping requirements
• Low permanent pressure loss
• Sizes: 1/2" to 48"
• Different H/D (opening) ratios
• Fabricated to standards such as: API, ASME, ANSI B311.1, and CSA-Z99.3 or equivalent