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Liquid
Gear Flowmeter
The Gear Flowmeter, or Positive Displacement (PD) Flowmeter, is a high-precision liquid flow measurement instrument. Using intermeshing gears driven by fluid pressure it ensures accurate, stable, and repeatable volume measurement. Ideal for petroleum, chemical, food, pharmaceutical, and other industries requiring reliable liquid flow monitoring.
Measuring Medium: Liquid
Medium Viscosity: 5–500 mm²/s
Environment Temperature: -40–85℃
Medium Temperature: -40–80℃, up to 200℃ for high-temperature type (custom-made)
Pressure: 50 bar (Aluminum) / 100 bar (Stainless Steel), up to 400 bar (custom high pressure)
Precision: ±0.5% (within measuring range 1:20), ±1% (full range), based on 20cst liquid
Working Voltage: 9–26 VDC
Output Signal: Analog (4–20 mA, 1–5V, 2–10V), Impulse frequency ≤ 5kHz
Communication Mode: RS485 (Modbus-RTU), HART, GPRS, Bluetooth
Description
Overview of Gear Flowmeter
The Gear Flowmeter, also known as a Positive Displacement (PD) Flowmeter, is a high-precision instrument designed for accurate measurement of liquid volume. It operates by using the pressure difference of the flowing liquid to drive intermeshing gears, dividing the fluid into fixed, known volumes, where each rotation corresponds to a precise quantity. With its robust structure and excellent accuracy, the Gear Flowmeter is widely used in petroleum, chemical, food, pharmaceutical, automotive, and other industries that require reliable flow monitoring and dosing.
Features of Gear Flowmeter
High Accuracy & Repeatability: Measuring precision up to ±0.5%, repeatability 0.1%
Wide Temperature Resistance: Operates in extreme ranges from -196℃ to 200℃ (customizable)
Wide Turndown Ratio: Up to 1:150, suitable for diverse flow conditions
High Resolution: 10–16 pulses per revolution for detailed measurement
Flexible Signal Output: Supports pulse, analog (4–20mA, 1–5V, 2–10V), RS485, HART, GPRS, Bluetooth
Corrosion & Wear Resistance: Compatible with corrosive liquids; durable gear, bearing, and sealing materials
Viscosity Handling: Suitable for high-viscosity media such as syrup, pitch, honey, and lubricating oils
Explosion-Proof & IP65 Protection: Safe for hazardous environments
Customizable Materials & Flanges: Stainless steel, aluminum, high-hardness alloy steel, and multiple flange standards
Applications of Gear Flowmeter
General Liquid Measurement: Diesel, lubricating oil, hydraulic oil, and other lubricating liquids
Automotive Industry: Brake system test benches, fuel consumption measurement, engine oil, brake fluid, antifreeze, dosing systems, polyurethane foam filling, and adhesive coating
Hydraulic Systems: Coolant monitoring, paint spraying, steering system dosing
Dosing & Filling Systems: Accurate volume and flow rate measurement, leakage detection, two-component A/B ratio control
Chemical Industry: Mixing, filling, and dosing of corrosive chemicals; reaction kettle feeding
High-Viscosity Products: Asphalt, ink, honey, syrup, and other thick fluids
HVAC / Refrigeration: Refrigerant flow monitoring (e.g., R143a)
Price of Gear Flowmeter
The price of the Gear Flowmeter varies according to specifications such as material, pressure rating, flow range, and industrial standards.
To get the latest quotation, please contact ZINACA Instruments for accurate and timely pricing.
Gear Flowmeter OEM Service
ZINACA Instruments is a professional manufacturer of industrial flow measurement instruments.
We provide customized Gear Flowmeter solutions according to your process requirements and operating conditions.
If you are seeking OEM services for Gear Flowmeters, please contact us for personalized support and cooperation.
Gear Flowmeter Manufacturer
As a leading flowmeter manufacturer, ZINACA Instruments specializes in flow, pressure, level, and temperature instrumentation.
Our ISO, CNAS, and IAF-certified products ensure reliable, high-performance measurement for industrial applications worldwide.
Technical Specifications
| Technical Specification Sheet | |
|---|---|
| Measuring Medium | Liquid |
| Executive Standard | JB/T9242-2015 Positive Displacement Flowmeters for Liquids - General Technical Requirements |
| Medium Viscosity | 5…500 mm²/s |
| Environment Temperature | -40…85℃ |
| Medium Temperature | -40…80℃, up to 200℃ for high-temperature type (custom-made) |
| Pressure | 50 bar (Aluminum) / 100 bar (Stainless Steel), up to 400 bar (custom-made high pressure) |
| Precision | ±0.5% (within measuring range 1:20), ±1% (full range), based on 20cst liquid |
| Repeatability | ±0.1% |
| Working Voltage | 9–26 VDC |
| Explosion-proof Grade | Exd II CT6 Gb |
| Protection Grade | IP65 |
| Output Signal | Analog (4–20mA, 1–5V, 2–10V), Impulse frequency ≤ 5kHz |
| Communication Mode | RS485 (Modbus-RTU), HART, GPRS, Bluetooth |
| Electrical Interface | M20×1.5 (with metal explosion-proof joint) |
| Material - Body | 1.4305 (304SS), 1.4144 (316L), Aluminum |
| Material - Gear | 304SS, 316L, High hardness alloy steel |
| Material - Bearing | Rolling bearing or sliding bearing |
| Material - Sealing | FKM, NBR, PTFE |
| Flange Standard | GB/T9112, HG/T20592-2010, ANSI, JIS (optional) |
| Accessory | Internal/external thread adapter, Ermeto connector, hygienic chuck connector |
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