Product Overview?

The ?EFTEC gear flow meter? is a positive displacement flow meter designed for precise continuous/intermittent measurement of liquid flow rates in pipelines, particularly suitable for high-viscosity media such as:

Heavy oils

Polyvinyl alcohol (PVA)

Resins

Manufacturer: Shanghai Zanke Automation Co.

Technical Specifications?

1. ?Basic Parameters?

Measurement Diameter?: DN10–DN100

Power Supply?: Not required

Display Type?: Analog dial

Display Units?: Tons/cubic meters (standard condition calibration)

2. ?Performance Metrics?

Accuracy Class?: 0.5級 (Grade 0.5)

Repeatability?: 0.03% (0.1% for specific models)

Turndown Ratio?: 200:1 to 10:1 (size-dependent)

Flow Range?: 0.13 GPH to 300+ GPM (?" to 4" models)

3. ?Environmental Tolerance?

Temperature Range?:

Medium: -10°C to +80°C

Ambient: 0°C to +50°C (IP65)

Pressure Rating?: 1.6 MPa

4. ?Output Options?

Standard: Pulse output

Optional: 4–20mA analog signal

Key Advantages?

Viscosity-Independent Accuracy?

Maintains ±0.5% accuracy across 1–500,000 cP viscosity range.

Compact Installation?

No upstream straight-pipe requirements; fits tight spaces.

Robust Construction?

Monolithic MX-meter design from solid billets

Tungsten carbide bearings

OEM Flexibility?

Available in PPS (polyphenylene sulfide) for corrosive media.

Working Principle?

The meter utilizes two intermeshing gears within a precision-machined chamber. Each rotation displaces a fixed volumetric quantity ("standard volume"), with flow rate calculated via rotation count.

Application Fields?

Industrial Processes?

Hydraulic pump testing

Polyurethane foaming machines

Dual-screw extruders

Fluid Types?

Category Examples

Fuels? Diesel, gasoline, heavy oils

Chemicals? Resins, polyols, isocyanates

Coatings? Paints, varnishes, adhesives

Compatible Media?

Lubricants (gear oil, brake fluid)

Polymers (polyurethane, wax)

Printing inks/coatings

Solvents (alcohol, electrolytes)