Industrial Flow Meter – Rotameter & Turbine Type

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Product Overview

Our Industrial Flow Meters encompass two proven technologies — variable-area rotameters and turbine flow meters — to address the broadest range of industrial liquid and gas flow measurement requirements. The rotameter (variable area meter) provides a direct, local visual flow indication using a float in a tapered tube, requiring no electrical power and offering an economical solution for local monitoring of water, air, and chemical dosing flows. The turbine flow meter provides a high-accuracy, high-frequency pulse or analog output signal for integration into PLC, DCS, and SCADA systems, making it the preferred choice for custody transfer, batch control, and precision flow measurement applications across the oil & gas, chemical, water treatment, and food processing industries.

Technical Specification Sheet

Parameter	Detail
Rotameter (Variable Area)
Flow Range	0.1 L/h up to 20,000 L/h (liquid); 0.5 L/min up to 1000 L/min (gas/air)
Accuracy	±2% FS (standard) or ±1% FS (precision glass tube)
Materials	Glass tube / Acrylic / SS 316 metal tube; Float: SS 316L, PVDF, Tantalum
Connection	G1/4 to G2 threaded, or flanged (DN15–DN100)
Turbine Flow Meter
Flow Range	0.6–6 m³/h up to 200–2000 m³/h (DN15–DN200)
Accuracy	±0.5% of reading (liquids); ±1.0% (gas)
Output Signal	Pulse (frequency), 4-20 mA, RS485 Modbus
Fluid Temperature	−20°C to +120°C (standard); up to +200°C (high-temp version)
Pressure Rating	Up to 160 bar
Wetted Parts	SS 316L body; SS 316L or ceramic bearings
Certifications	ATEX Ex d IIC optional; MID (custody transfer) available

Key Features

Rotameter provides instant local visual flow indication without any electrical power, wiring, or signal conditioning — ideal for chemical dosing verification, utility monitoring, and panel indicator applications.
Turbine flow meter delivers ±0.5% of reading accuracy with a high-frequency pulse output (up to 10 kHz) for precise batch control, custody transfer, and mass balance applications demanding better than ±1% measurement uncertainty.
Both meter types are available in full stainless steel 316L construction with optional ATEX explosion-proof certifications, covering the widest range of hazardous and corrosive process environments from a single product family.

Typical Use Cases

Chemical Dosing & Injection: Rotameter for local visual confirmation of chemical (biocide, coagulant, inhibitor) dosing rate into water treatment and process systems.
Utility Monitoring (Air, Water, Gas): Rotameter for compressed air, nitrogen, and cooling water flow monitoring on process equipment skids without electrical installation costs.
Fuel Oil & Lubrication Metering: Turbine meter for precise fuel consumption measurement and engine lube oil flow monitoring with pulse output to PLC counters.
Batch Processing & Blending: Turbine meter with totalizer for accurate volumetric batch filling of liquid ingredients in food, beverage, and chemical blending applications.
Custody Transfer: MID-certified turbine meter for legally traceable measurement of commercial liquid transfers (petroleum products, chemicals, water) at plant boundaries.

Competitive Benefits

Two Technologies, One Supplier: Procuring both rotameter and turbine meters from a single source simplifies vendor qualification, ensures consistent quality standards, and provides a single point of contact for technical support and spare parts.
No-Power Local Indication (Rotameter): Eliminates electrical installation costs and provides reliable flow indication during power outages — critical for safety-critical cooling and chemical dosing verification.
High Accuracy Custody Transfer Capability (Turbine): MID-certified turbine meters meet legal metrology requirements for commercial flow measurement, enabling use at fiscal metering points and for invoiced product transfers.
Wide Media Compatibility: From clean water and light hydrocarbons to viscous oils, aggressive chemicals, and corrosive liquids — material options cover virtually every industrial liquid and gas application without exotic sensor technologies.
Simple Maintenance (Turbine): The rotor and bearing assembly is field-replaceable without disconnecting the meter body from the pipeline, minimizing process downtime for maintenance and calibration activities.

Payment and Shipping Details

We accept T/T, L/C at sight, and Western Union for international orders. Standard shipping is FOB Shanghai/Ningbo or CIF destination port. Standard glass-tube rotameters and common turbine meter sizes (DN25–DN100, water service) are available for dispatch within 7–10 working days. Stainless steel metal-tube rotameters, high-pressure turbine meters, ATEX-certified versions, and MID-approved custody transfer units require 20–30 working days. All turbine flow meters are factory-calibrated with water on a gravimetric test rig and supplied with a multi-point calibration certificate.

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Industrial Flow Meter – Rotameter & Turbine Type Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.