Your Professional Metal Tube Rotameter Supplier
Hongnuo (shenyang) General Machinery Co., Ltd. is an international, professional, and technology-driven manufacturer of intelligent fluid equipment. Integrating research, production, and sales, we are committed to innovation in intelligent fluid measurement and control.
Why Choose Us
Our Certificate
Certified to GB/T19001-2016/ISO 9001:2015 Quality System Standard,Meanwhile, the company's products have successively obtained professional certifications such as ATEX, CE, SIL, and others both domestically and internationally.The company attaches great importance to patent application and management, sets patent objectives, and supervises and manages them.
Cutting-Edge Smart Fluid Technology
Honno leads the industry with innovative, intelligent fluid measurement and control solutions. By integrating R&D, production, and sales, we continuously develop high-performance products that improve water efficiency, energy conservation, and environmental management, positioning us as a pioneer in smart industrial technologies.
Global Market Expertise & Compliance
With strong presence in Europe, North America, Asia, and Africa, Honno delivers tailored solutions that meet rigorous international standards such as CE and SIL. Our extensive global experience ensures reliable product performance and seamless market entry, supporting clients across diverse industries with customized, cost-effective solutions.
Comprehensive 24/7 Service & Support
Honno provides a robust end-to-end service system, including pre-sales consultation, rapid mid-sales fulfillment, and proactive after-sales support. Clients benefit from fast response times, remote or on-site guidance, spare parts availability, and lifetime technical assistance, ensuring uninterrupted operations and maximum system efficiency.
Metal Tube Rotameter Specifications
|
Measuring range |
Water (20℃) 16~150000 l/h. Air(0.1013MPa 20℃) 0.5~4000 m3/h. |
|
Range ratio |
10:1(Special type 20:1). |
|
Accuracy class |
2.5(Special type 1.5% or 1.0%). |
|
Working pressure |
DN15~DN50 PN16MPa (Special type 25MPa). DN80~DN150 PN10MPa (Special type 16MPa). Pressure rating of jacket 1.6MPa. |
|
Medium temperature |
Normalized type -80℃~+220℃. High-temperature type 300℃. Lined with FEP type ≤85℃. |
|
Ambient temperature |
-40℃~+120℃(Remote display without LCD≤85℃). (Remote display with LCD≤70℃). |
|
Dielectric viscosity |
1/4” NPT, 3/8” NPT 1/2” NPT≤5mPa.s 3/4” NPT,1” NPT ≤250mPa.s |
|
Output |
Standard signal: Two-wire system 4 ~ 20mA (with HART communication). Standard signal: Three-wire system 0 ~ 10mA. Alarm signal:1.Two-way relay output. 2.One-way or two-approach switches . Pulse signal output: 0-1KHz isolated output. |
|
Process connection |
Standard type:24VDC±20%. AC type:220VAC(85~265VAC) (optional). |
|
Connection mode |
Flange Thread Tri-clamp |
|
Levels of protection |
IP65/IP67. |
|
Ex-mark |
Intrinsically safe:ExiaIICT3~6. Exd type:ExdIICT4~6. |
Key Features
Robust Construction
Made from high-quality metal materials to withstand extreme temperatures, pressures, and corrosive substances.
Accurate Measurement
Provides precise flow readings suitable for control and monitoring processes. Simple Operation: Features a straightforward design with a float inside a tapered metal tube; the float position indicates the flow rate.
Wide Range of Applications
Ideal for use in chemical, petrochemical, pharmaceutical, food processing, and water treatment industries.
Easy Maintenance
Designed for easy installation, calibration, and maintenance to ensure long-term reliable operation.
Chemical Processing: Metal rotameters are widely used to monitor and control flow rates of various chemicals, solvents, and reagents in chemical plants and laboratories.
Petrochemical Industry: Rotameters are essential for measuring the flow of fuels, lubricants, and other hydrocarbon-based fluids in oil refineries and petrochemical facilities.
Water and Wastewater Treatment: Metal tube rotameters are utilized to measure the flow of water, wastewater, and chemical additives in treatment plants.
Power Generation: Rotameters are used to monitor the flow of coolants, lubricants, and other fluids in power plants, including nuclear, fossil fuel, and renewable energy facilities.

Global Partnership & Service
Certified for Global Safety: Fully compliant with CE, ISO9001, and ATEX/IECEx explosion-proof standards for operation in Zone 0/1 hazardous areas.
Global Channel Partner Program: We are actively seeking Distributors and Agents. We empower our partners with deep technical training, 3D CAD files, and exclusive local customer leads to ensure your market success.
Efficient DDP Logistics: We offer Delivered Duty Paid (DDP) shipping to the EU, USA, Middle East, and Southeast Asia. We handle all customs, duties, and taxes—delivered straight to your door.
Custom Engineering (OEM/ODM): We provide customized scales (for specific gravity/viscosity), specialized liners (PTFE), and private labeling to support your brand’s regional growth.
Certification




FAQ
Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most experienced metal tube rotameter manufacturers and suppliers in China, also supports customized service. Please feel free to buy high quality metal tube rotameter at competitive price from our factory.
Metal Tube Flow Meter, digital metal tube rotameter, rotor flow indicator

