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Liquid
Liquid Rotameter (Metal Tube Variable Area Flowmeter)
The Rotameter (Metal Tube Variable Area Flowmeter) is a compact, versatile flowmeter for accurate measurement of liquids, gases, and steam, ideal for low-flow and small-diameter pipelines. Widely used in petrochemical, steel, power, metallurgy, light industry, food, pharmaceutical, and water treatment.
Meter Diameter (DN)：DN15, DN25, DN50, DN80, DN100, DN150 (other sizes negotiable)
Flow Range：Liquid 1.0 ~ 150,000 L/h; Gas 0.05 ~ 3000 m³/h
Accuracy：1.5% F.S., 1.0% F.S. (special)
Pressure Rating：DN15, DN25, DN50: 4.0 MPa (max 20 MPa); DN80, DN100, DN150: 1.6 MPa (max varies by DN)
Medium Temperature：Standard -30℃ ~ +120℃; High 120℃ ~ 350℃
Power Supply：24 VDC (12~36 VDC), 220 VAC
Output Signal：4~20 mA DC (two-wire), optional HART, load ≤500Ω (24V supply)
Medium Viscosity：DN15:<5 mPa·s; DN25:<250 mPa·s; DN50~DN150:<300 mPa·s
Description
Overview of Rotameter
The Rotameter (Metal Tube Variable Area Flowmeter) is a widely used industrial flow measurement instrument designed for accurate measurement of liquids, gases, and steam, particularly in low-flow and small-diameter pipeline applications. Its compact, versatile design ensures reliable operation, high performance, and cost-effectiveness, making it ideal for petrochemical, steel, power, metallurgy, light industry, food, pharmaceutical, and water treatment industries.
Features of Rotameter
Suitable for Small-Diameter Pipelines: Accurate measurement for low-flow media
Minimal Straight Pipe Requirement: Easy installation in tight spaces
Dual-Line LCD Display: Shows real-time and totalized flow on-site
Reliable & Durable: Minimal maintenance and long service life
Wide Turndown Ratio: Up to 10:1 for flexible measurement range
Built-In Keypad: Convenient operation and configuration
All-Metal Construction: Handles high-temperature, high-pressure, and corrosive media
Non-Contact Magnetic Coupling Drive: Ensures long-term reliability
Explosion & Flameproof Options: Safe for hazardous environments
Data Protection: Recovery, backup, and power-off protection functions
Flexible Power Supply: DC or battery options
Multi-Parameter Calibration: Adaptable for various industrial conditions
Applications of Rotameter
Measurement of liquids, gases, and steam in small-diameter or low-flow pipelines
Industrial process monitoring and control in the petrochemical, steel, power, and metallurgy industries
Food, pharmaceutical, and water treatment flow measurement
Hazardous areas with flammable or explosive media
On-site monitoring where high reliability, low maintenance, and long-term operation are required
Price of Rotameter
The price of the Rotameter varies according to specifications such as pipe diameter, flow range, material, and explosion-proof requirements.
To get the latest quotation, please contact ZINACA Instruments for accurate and timely pricing.
Rotameter OEM Service
ZINACA Instruments is a professional manufacturer of industrial instrumentation.
We provide customized Rotameter solutions according to your process requirements and working conditions.
If you are seeking OEM services for Rotameters, please contact us for tailored support and cooperation.
Rotameter Manufacturer
As a leading Rotameter 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
| Parameter | Specification |
|---|---|
| Meter Diameter (DN) | DN15, DN25, DN50, DN80, DN100, DN150 (other sizes negotiable with manufacturer) |
| Flow Range | Liquid: 1.0 ~ 150,000 L/h Gas: 0.05 ~ 3000 m³/h (see page 11 for detailed flow table) |
| Turndown Ratio | 10:1, 20:1 (special) |
| Accuracy | 1.5% F.S., 1.0% F.S. (special) |
| Pressure Rating | DN15, DN25, DN50: 4.0 MPa (max 20 MPa) DN80, DN100, DN150: 1.6 MPa (max: DN80 10 MPa; DN100 6.4 MPa; DN150 4.0 MPa) |
| Medium Temperature | Standard: -30℃ ~ +120℃ High Temperature: 120℃ ~ 350℃ |
| Power Supply | 24 VDC (12~36 VDC), 220 VAC |
| Output Signal | 4~20 mA DC (two-wire), optional HART protocol, load ≤500Ω (24V supply) |
| Ambient Temperature | Local display: -40℃ ~ 120℃ Remote display: -30℃ ~ 60℃ |
| Storage Conditions | Temperature: -40℃ ~ 85℃ |
| Connection | Flange (GB/T9119-2000, user-specified), cable interface M20x1.5, 1/2 NPT |
| Protection Class | IP65 |
| Explosion Proof | Intrinsic safety: Exia II CT6 Flameproof: Exd II CT6 |
| Pressure Loss | See flow table |
| Humidity | ≤ 85% |
| Medium Viscosity | DN15:<5 mPa·s DN25:<250 mPa·s DN50~DN150:<300 mPa·s |
| Wetted Material | R1: 304, 06Cr19Ni10 R0: 316, 06Cr17Ni12Mo2 RL: 316L, 022Cr17Ni12Mo2Ti (Titanium Alloy) RP: PTFE lining |
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