COIN® Flow Meter
The Preso COIN flow meter accommodates 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 necessary square root relationship between flow rate and differential pressure for almost any type of flow:
- Clean liquids
- High viscosity fluids
- Corrosive processes
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 500. 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 OperationThe 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