Flow Sensor / Transducer for Sanitary Applications

Product Specifications

Technical details and manufacturing context for Flow Sensor / Transducer

Definition

The flow sensor/transducer is a critical component of sanitary flow meters, specifically designed to measure the volumetric or mass flow rate of liquids in hygienic applications. It operates by detecting fluid movement through various sensing principles and converts this physical parameter into a standardized electrical output signal (such as 4-20mA, 0-10V, or digital protocols) for monitoring, control, and data acquisition in sanitary processing systems. This component is typically installed in-line within a sanitary piping system, using hygienic connections such as DIN 11851. The sensor element is wetted by the process fluid and must be constructed from materials compatible with food contact and cleaning agents, such as 316L stainless steel, PTFE, ceramic, or Hastelloy. The transducer electronics may be integrated or remote, converting the sensed signal into a standardized output. Selection of a specific flow sensor/transducer requires consideration of nominal diameter (DN15–DN100), flow range (0.1–10 m³/h), accuracy (±0.5% of reading), repeatability (±0.1%), operating temperature (-40–150°C), operating pressure (1.0–1.6 MPa), supply voltage (24 ±10% V DC), output signal (4–20 mA), ingress protection (IP65–IP67), and weight (2.5–15 kg). These parameters must be verified against the actual process requirements and the manufacturer's specifications. The sensor's working principle may be electromagnetic, ultrasonic, or thermal dispersion, each with its own advantages and limitations. For hygienic applications, the sensor must be designed for clean-in-place (CIP) and sterilize-in-place (SIP) processes, with appropriate surface finishes and materials. Verification of compliance with standards such as ISO 1127, ISO 11631, IEC 60381-1, IEC 60529, ASTM A269, and DIN 11851 should be confirmed with the legal manufacturer or supplier for the specific model. This directory listing provides reference data only; always consult the manufacturer for model-specific values and certifications.

Working Principle

Common working principles include electromagnetic induction (measuring voltage induced by conductive fluid moving through a magnetic field), ultrasonic time-of-flight or Doppler shift measurement, or thermal dispersion (measuring heat transfer from a heated element to the flowing fluid). The transducer element converts the sensed physical phenomenon into a proportional electrical signal.

Common Materials

316L Stainless Steel, PTFE (Polytetrafluoroethylene), Ceramic, Hastelloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	DN15–DN100 mm	Matches pipe size for hygienic connections.ISO 1127
Flow Range	0.1–10 m³/h	Select based on process flow requirements.
Accuracy	±0.5 % of reading	Higher accuracy for custody transfer.ISO 11631
Repeatability	±0.1 %	Ensures consistent measurements.
Operating Temperature	-40–150 °C	For CIP/SIP up to 150°C.
Supply Voltage	24 ±10% V DC	Typical for industrial transmitters.
Output Signal	4–20 mA	Analog current loop standard.IEC 60381-1
Ingress Protection	IP65–IP67	For washdown environments.IEC 60529
Material	316L	Hygienic stainless steel.ASTM A269
Process Connection	DIN 11851	Sanitary clamp or thread.DIN 11851
Weight	2.5–15 kg	Depends on size and materials.

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

Sensing Element Part
Directly interacts with the fluid flow to generate a primary measurement signal (e.g., electrodes, ultrasonic transducers, thermal element).

Material: 316L Stainless Steel, Platinum, Ceramic
Signal Conditioning Circuitry
Amplifies, linearizes, and converts the raw signal from the sensing element into a standardized output.

Material: Electronic components on PCB
Housing / Body Part
Provides structural integrity, protects internal components, and interfaces with the sanitary process connection.

Material: 316L Stainless Steel
Process Connection Fitting Part
Provides a hygienic, leak-proof seal between the sensor and the process piping.

Material: 316L Stainless Steel
Electrical Connection Part
Conduit or connector for power supply and output signal wiring.

Material: Stainless Steel, Plastic (e.g., PEEK)

Applied To / Applications

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

Sanitary Flow Meter

View system integration details

Manufacturers of Flow Sensor / Transducer

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Frequently Asked Questions

What is the typical output signal of a flow sensor/transducer?

The output signal is typically a standardized analog current loop of 4-20 mA, as per IEC 60381-1. Other outputs like 0-10V or digital protocols may be available, but the 4-20 mA is common for industrial transmitters.

What materials are commonly used for the wetted parts?

Common materials include 316L stainless steel, PTFE, ceramic, and Hastelloy. These are selected for compatibility with food products and cleaning agents. The specific material grade should be confirmed with the manufacturer for the intended application.

What is the operating temperature range for this component?

The reference operating temperature range is -40 to 150°C, suitable for CIP/SIP processes up to 150°C. However, the actual range depends on the model and materials; verify with the manufacturer.

How should I verify the accuracy and repeatability of the sensor?

Accuracy is typically ±0.5% of reading, and repeatability is ±0.1%, as per reference data. To verify for a specific model, consult the manufacturer's calibration certificate and test procedures. Standards like ISO 11631 may apply.

Data Basis

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

Preliminary Technical Classification

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pressure:	0 to 16 bar (232 psi)
flow rate:	0.1 to 100 L/min
temperature:	-40°C to +150°C
slurry concentration:	≤ 5% solids by weight

Flow Sensor / Transducer

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards