Editorial Technical Reference

Flow Meter

This page explains how Flow Meter is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A device that measures the volumetric or mass flow rate of a fluid within a spray system.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Flow Meter

Definition
A flow meter is a critical component within a spray system that precisely measures and monitors the flow rate of liquids or gases being delivered through the system. It ensures accurate dosing, process control, and efficiency by providing real-time data on fluid movement, which is essential for maintaining consistent spray patterns, pressure, and material application rates. Flow meters are used in various industries, including chemical processing, food and beverage, pharmaceuticals, and water treatment, where precise fluid control is necessary. They help in optimizing resource usage, reducing waste, and ensuring product quality. The selection of a flow meter depends on factors such as the type of fluid, flow range, pipe size, operating conditions, and required accuracy. Common materials include stainless steel, brass, and plastics like PVC or PTFE, chosen based on fluid compatibility and environmental conditions. Key parameters to consider include nominal diameter (15–100 mm), flow range (0.1–100 m³/h), accuracy (±0.5%), repeatability (±0.1%), operating pressure (1.0–1.6 MPa), operating temperature (-40–85 °C), power supply (24 V DC ±10%), output signal (4–20 mA), ingress protection (IP65–IP67), material (316L stainless steel), and weight (2.5–15 kg). These values are typical reference ranges and must be verified for the specific model and application. Standards such as ISO 11631, IEC 60381, IEC 60529, and ASTM A240 are referenced for testing and verification, but do not imply certification. Always consult the manufacturer or supplier to confirm that the selected flow meter meets the requirements of your system.
Working Principle
Flow meters operate on various principles depending on the type. Common types include mechanical (turbine, positive displacement), differential pressure (orifice plate, venturi tube), and electronic (electromagnetic, ultrasonic). They typically measure the velocity of the fluid or the pressure drop across a restriction to calculate the volumetric or mass flow rate, converting this physical measurement into an electrical or mechanical signal for display or control systems. The choice of principle depends on the fluid properties, required accuracy, and installation constraints.
Common Materials
Stainless Steel, Brass, Plastic (e.g., PVC, PTFE)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal Diameter15–100 mmSelect based on pipe size and flow range.
Flow Range0.1–100 m³/hEnsure operating flow is within range for accuracy.
Accuracy±0.5 %Higher accuracy for custody transfer applications.ISO 11631
Repeatability±0.1 %Consistency of measurements under same conditions.
Operating Temperature-40–85 °CExceeding limits may damage sensor or seals.
Power Supply24 ±10% V DCUse regulated power supply to avoid damage.
Output Signal4–20 mAAnalog output for process control.IEC 60381
Ingress ProtectionIP65–IP67Higher rating for outdoor or washdown environments.IEC 60529
Material316LCorrosion-resistant for most fluids.ASTM A240
Weight2.5–15 kgDepends on size and material.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Sensor/Transducer
    Detects the physical flow of fluid and converts it into a measurable signal (e.g., electrical, mechanical).
    Material: Stainless Steel or Ceramic
  • Housing/Body Part
    Encases and protects internal components, providing structural integrity and fluid connections.
    Material: Stainless Steel, Brass, or Plastic
  • Display/Indicator Part
    Shows the measured flow rate, totalized flow, or other parameters locally (optional, depending on model).
    Material: Plastic or Glass
  • Electronics/Transmitter
    Processes the sensor signal, performs calculations, and generates the output signal for external systems.
    Material: PCB with electronic components

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 100 bar
flow rate: 0.1 to 100 L/min
temperature: -40°C to +85°C
slurry concentration: Up to 10% solids by weight
Media Compatibility
✓ Water-based solutions ✓ Chemical additives ✓ Lubricating oils
Unsuitable: Abrasive slurries with high particulate content
Sizing Data Required
  • Fluid viscosity (cP)
  • Required flow rate range (L/min)
  • Pipe diameter (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sensor fouling or coating
Cause: Accumulation of process media (e.g., scale, wax, biological growth) on sensing elements, altering flow readings due to reduced sensitivity or signal interference.
Electronics or signal transmission failure
Cause: Environmental factors (moisture ingress, temperature extremes, electrical noise) or component aging leading to inaccurate output, signal loss, or complete failure.
Maintenance Indicators
  • Erratic or zero flow readings when process conditions are stable
  • Visible physical damage, corrosion, or leaks at the meter body, connections, or electrical enclosures
Engineering Tips
  • Implement routine cleaning or purging schedules compatible with the process media to prevent sensor fouling, using manufacturer-recommended methods.
  • Ensure proper installation with adequate straight pipe runs upstream/downstream, correct grounding/shielding for electronics, and environmental protection (e.g., weatherproofing, temperature control).

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 5167: Measurement of fluid flow by means of pressure differential devices ANSI/ASME MFC-3M: Measurement of fluid flow in pipes using orifice, nozzle, and venturi DIN EN 1434: Heat meters

Quoted from the published standard.

Manufacturing Precision
  • Flow rate accuracy: +/-0.5% of reading
  • Pressure rating: +/-2% of specified maximum working pressure
Quality Inspection
  • Calibration verification against a master meter or gravimetric/volumetric standard
  • Leak test under maximum working pressure for 30 minutes

Manufacturers of Flow Meter

12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

BCST Group
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
MEWOI Electronics Co., Ltd
Guangzhou, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Yantai Wepower Electronic Co., Ltd.
Shandong, CN
Founded 2003
CE ROSH Reach Explosion-proof +3
Listed on the company's own website · profile compiled by CNFX from public sources
Feejoy Technology (ShangHai) Co., Ltd.
益紧张和消费, Shanghai, CN
Also makes: Flow Sensor
Listed on the company's own website · profile compiled by CNFX from public sources
Hunan Rika Electronic Tech Co., Ltd.
Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
MacSensor
Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
NINGBO BEILUN GC-BOB INSTRUMENT CO.,LTD.
Ningbo, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shandong Fengtu IOT Technology Co., Ltd
Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai BOQU Instrument Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai Ziasiot Technology
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Sino-Inst
Shanxi, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Xi'an Yunyi Instrument Co., Ltd.
Shaanxi, CN
Listed on the company's own website · profile compiled by CNFX from public sources
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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What are the common types of flow meters used in spray systems?

Common types include mechanical (turbine, positive displacement), differential pressure (orifice plate, venturi), and electronic (electromagnetic, ultrasonic). Each has advantages depending on fluid type, flow range, and accuracy requirements.

How do I select the right flow meter for my spray system?

Consider the fluid type, flow range, pipe size, operating pressure and temperature, required accuracy, and output signal compatibility. Verify that the meter's specifications match your system's conditions, and consult the manufacturer for application-specific advice.

What does the accuracy specification mean?

Accuracy indicates the maximum deviation of the measured flow rate from the actual flow rate, expressed as a percentage. For example, ±0.5% means the reading can deviate by up to 0.5% of the actual flow. Higher accuracy is needed for custody transfer or precise dosing.

Why is it important to verify standards and specifications?

Standards like or IEC 60529 provide testing methods and performance criteria, but they do not guarantee that a specific product is certified. Always check the manufacturer's documentation to confirm that the flow meter meets the required standards and that the listed parameters are valid for your application.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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