Rotameter (Plastic Variable Area Flowmeter)
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Gas
Differential Pressure Flowmeter
The Differential Pressure Flowmeter (Orifice Throttling Device) provides accurate, reliable flow measurement based on differential pressure. With a simple structure and high stability, it is widely used in petroleum, chemical, natural gas, metallurgy, power, water treatment, pharmaceuticals, textiles, beverages, and environmental applications for flow monitoring and process control.
Description
Overview of Differential Pressure Flowmeter
The Differential Pressure Flowmeter (Orifice Throttling Device) is a highly reliable flow measurement instrument that operates on the principle of differential pressure, one of the most recognized methods worldwide. With a simple yet robust structure, it provides stable, accurate flow measurement without requiring actual flow calibration. It is widely used in petroleum, chemical, natural gas, metallurgy, power, water treatment, pharmaceuticals, textiles, beverages, environmental protection, and municipal utility applications.
Features of Differential Pressure Flowmeter
High Accuracy & Versatility: Reliable measurement with easy installation and low cost for various media.
Standard Nozzle Flowmeter: Excellent resistance to high temperature, high pressure, and impact; long service life; suitable for steam, liquid ammonia, and large flow conditions.
Venturi Flowmeter: Low pressure loss, high accuracy, short meter run, and long service life for efficient industrial operation.
Balanced Orifice Flowmeter: High accuracy, low pressure loss, large turndown ratio, excellent repeatability, and stable long-term performance.
Special Orifice Designs: Conical entrance, 1/4 circle, and double orifice plates suitable for low Reynolds number fluids, viscous liquids, and low flow rate gases.
Segmental & Eccentric Orifice Plates: Clogging-resistant, suitable for dusty or impure media such as coal gas, with minimal straight-run requirements.
Applications of Differential Pressure Flowmeter
Petroleum & Natural Gas: Accurate measurement of crude oil, natural gas, and refined products.
Chemical & Petrochemical: Monitoring of aggressive chemicals, steam, and process gases.
Power & Energy: Steam measurement in power plants and high-pressure systems.
Metallurgy & Steel: Flow measurement under extreme pressure and temperature conditions.
Pharmaceuticals & Food: Clean media monitoring with precise control.
Municipal & Environmental: Water supply, sewage treatment, and city gas flow measurement.
General Industrial Use: Applicable for liquids, gases, and steam, with or without impurities, across a wide range of flow rates and working conditions.
Price of Differential Pressure Flowmeter
The price of the Differential Pressure Flowmeter varies depending on flow range, material, orifice type, and process conditions.
For the latest quotation and customized solutions, please contact ZINACA Instruments for a tailored offer.
Differential Pressure Flowmeter OEM Service
ZINACA Instruments is a professional manufacturer of industrial measurement instruments, specializing in flow, pressure, temperature, and level devices.
We provide OEM and customization services for Differential Pressure Flowmeters to meet specific industrial requirements and process conditions.
If you are seeking a reliable OEM partner for Differential Pressure Flowmeters, please contact us to discuss your needs.
Differential Pressure Flowmeter Manufacturer
ZINACA Instruments – a trusted manufacturer delivering high-quality differential pressure flow measurement solutions with global OEM support and technical assistance.
Technical Specifications
| Type | Pressure taps | Model | Nominal size (mm) | Nominal press. (MPa) | Diameter ratio (β) | Reynolds number range |
|---|---|---|---|---|---|---|
| Standard Orifice | Corner taps, Chamber | LGBH-□/□ | 50~1000 | 1.0~32.0 | 0.1 ≤ β ≤ 0.75 | 0.1 ≤ β ≤ 0.75, Re ≥ 5000; β > 0.56, Re ≥ 16000β² |
| Corner taps, Drill holes | LGBZ-□/□ | 50~1000 | 1.0~32.0 | 0.1 ≤ β ≤ 0.75 | Re ≥ 5000 & Re ≥ 170β²D | |
| Radius taps | LGBJ-□/□ | 50~1000 | 1.0~32.0 | 0.1 ≤ β ≤ 0.75 | Re ≥ 5000 & Re ≥ 170β²D | |
| Flange taps | LGBF-□/□ | 50~1600 | 1.0~32.0 | 0.1 ≤ β ≤ 0.75 | Re ≥ 5000 & Re ≥ 170β²D | |
| Built-in Orifice | Flange taps | LGBFC-□/□ | 50~600 | 1.0~32.0 | 0.1 ≤ β ≤ 0.75 | Re ≥ 5000 & Re ≥ 170β²D |
| HP Lens Orifice | Corner taps, Drill holes | LGBTZ-□/□ | 15~600 | 16.0~42.0 | 0.1 ≤ β ≤ 0.75 | 0.1 ≤ β ≤ 0.75, Re ≥ 5000; β > 0.56, Re ≥ 16000β² |
| Little Orifice | Corner taps, Chamber | LGBXH-□/□ | 25~40 | 1.0~16.0 | 0.23 ≤ β ≤ 0.7 | 0.23 ≤ β ≤ 0.5, Re ≥ 40000β²; 0.5 ≤ β ≤ 0.7, Re ≥ 10000 |
| Balanced Orifice | Corner taps, Chamber | LGBPHH-□/□ | 15~1500 | 1.0~42.0 | 0.25 ≤ β ≤ 0.9 | 200 < Re ≤ 10⁷ |
| Radius taps | LGBPHJ-□/□ | 15~1500 | 1.0~42.0 | 0.25 ≤ β ≤ 0.9 | 200 < Re ≤ 10⁷ | |
| Flange taps | LGBPHF-□/□ | 15~1500 | 1.0~42.0 | 0.25 ≤ β ≤ 0.9 | 200 < Re ≤ 10⁷ | |
| Flange taps, Hidden orifice | LGBPHFC-□/□ | 15~1500 | 1.0~42.0 | 0.25 ≤ β ≤ 0.9 | 200 < Re ≤ 10⁷ | |
| ¼ Circle Orifice | Corner taps, Chamber | LGBRH-□/□ | 25~40 | 1.0~16.0 | 0.245 ≤ β ≤ 0.6 | 250 < Re ≤ 10⁵ |
| Corner taps, Drill holes | LGBRZ-□/□ | 25~40 | 1.0~16.0 | 0.245 ≤ β ≤ 0.6 | 250 < Re ≤ 10⁵ | |
| Flange taps | LGBRF-□/□ | 50~500 | 1.0~16.0 | 0.245 ≤ β ≤ 0.6 | 250 < Re ≤ 10⁵ | |
| Conical entrance Orifice | Corner taps, Chamber | LGBVH-□/□ | 25~500 | 1.0~16.0 | 0.1 ≤ β ≤ 0.316 | 80 < Re ≤ 2×10⁵β |
| Corner taps, Drill holes | LGBVZ-□/□ | 25~500 | 1.0~16.0 | 0.1 ≤ β ≤ 0.316 | 80 < Re ≤ 2×10⁵β | |
| Segmental Orifice | Flange taps | LGBQF-□/□ | 100~350 | 1.0~16.0 | 0.3 ≤ β ≤ 0.8 | 100 < D ≤ 125, Re upper limit unlimited; 125 ≤ D ≤ 350, Re ≥ 10000; 100 ≤ D ≤ 350, Re ≥ 80D |
| Eccentric Orifice | Corner taps, Chamber | LGBPXH-□/□ | 100~1000 | 1.0~16.0 | 0.46 ≤ β ≤ 0.84 | 2×10⁵β² ≤ Re ≤ 10⁶β |
| Corner taps, Drill holes | LGBPXZ-□/□ | 100~1000 | 1.0~16.0 | 0.46 ≤ β ≤ 0.84 | 2×10⁵β² ≤ Re ≤ 10⁶β |
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