Gear Flow Meter

SF-Gear Flow Meter Product Series

Working Principle

The gear flow meter is a type of Positive Displacement flow meter used to measure the volumetric flow of liguids. Positive Displacement flow meters directly measure the volume that passes throueh the meter rather than the velocity or some other physical characterishic of the liquid to calculate the volumetric flow rate, making them a volumetric meter. Volumetric meters directly measure the total volume passing through the meter rather than measuring the velocity of the flow or inferring the volumetric flow rate from some physical characteristic such as the conductivity or sound velocity. The advantage of volumetric meters over inferential or velocity meters is that the viscosity effects are largely removed. Fluids like oils and greases can be measured at very low flow rates where the other technologies require much higher minimum flow rates and so are ineffective for real world application rates.

The gear principle is a simple concept: two shaped rotors, with integral timing gear teeth around their perimeters, rotate within a precision measuring chamber. The rotors are installed at exactly 90 degrees from each other, and this relationship is maintained as they rotate. The Gear Meter requires no external timing mechanism, making it a simple device with only 2 moving parts that are durable and easily serviceable. Each rotation of the Gear rotors will transmit 4 identical volumes of liguid from the meter inlet to outlet providing either a constant number of electronic pulses to a digital instrument, or 360 degrees of rotational motion to a mechanical counter. They are well suited for a broad range of applicatons and excel in many operating conditions where other measurement principles cannot be used effectively, or at all.

Product Characteristics

• High measurement accuracy and repeatability: +0.5% reading,0.1% repeatability                                 

• High and low temperature: -196°C-200°C

• Range ratio: 1:150                            

• High resolution: 10-16P/rpm                   

• Various signal output types: pulse, analog, 485 and Hart

• Can measure highly corrosive liquids: sulfuric acid, hydrofluoric acid, etc

• Can measure high viscosity media: syrup, asphalt and honey, etc.

 Scope of Application

• Oil and Gas industry: Measuring fuel oil, gasoline, marine heavy oil, diesel, gearoil, syrup, sauces, resins, creams, etc.

• Chemical Production: Measuring caustic alkali, potassium hydroxide, acetic acid, deionized water, etc.

• Food industry: Measuring sugar solutions, syrups, oils, sauces beverages, honey, chocolate, dairy products, fruit juices, alcohol, ethanol, and coatings,etc.

• Pharmaceutical Industry: Measuring alcohol, syrups, glycerin, and coatings, etc.

• Cosmetics Industry: Measuring shampoos, gels, perfumes, and creams, etc.

• Water and Wastewater Industry: Measuring chemicals, fluorides, and acids, etc.

• Pulp and Paper Industry: Measuring wax surface treatments perfumes, dyes, and acids, etc

• Printing Industry: Measuring solvents and inks, etc.

• Automotive Industry: Measuring transmission fuids, ethylene glycol, low-viscosity air conditioningfuids,and hydraulic oils. etc.

• Water and Wastewater Industry: Measuring chemicals, fuorides, and acids, etc.

• Textile Industry: Measuring dyes, bleaches, and chemicals, etc.

• Paint Industry: Measuring solvents and latex-based paints, etc

• Shipbuilding Industry: Measuring lubricating oils, fuel, marine oils, etc.

• Mining Industry: Measuring oil, fuel, lubricants, etc.