Pickup / Sensor Head for Reference Flow Sensors

Product Specifications

Technical details and manufacturing context for Pickup / Sensor Head

Definition

The pickup/sensor head is the critical front-end component of a reference flow sensor system. It houses the sensing mechanism (such as ultrasonic transducers, electromagnetic coils, or thermal elements) that directly interacts with the flowing medium to detect velocity, pressure differentials, or other flow-related phenomena. It converts these physical interactions into electrical signals for processing by the sensor's electronics. This component is designed for use in machinery and equipment manufacturing, where accurate flow measurement is essential for process control and monitoring. The sensor head is available in configurations suitable for various media and operating conditions, with materials including stainless steel 316L, PEEK, and ceramic (alumina). Key parameters include an operating pressure range of 1.0–1.6 MPa, an operating temperature range of -40 to 85 °C, and a flow measurement range of 0.1–10 m/s for liquid media. Accuracy is ±0.5% of reading under reference conditions, with repeatability of ±0.1% under constant conditions. The device operates on a 24 V DC supply (24 ±10%) with reverse polarity protection, and provides a 4–20 mA two-wire loop-powered output signal. Electrical connection is via a 4-pin M12×1 connector (per IEC 61076-2-101). The ingress protection rating is IP67 (per IEC 60529), and the sensor material is stainless steel 316L (per ASTM A276). The process connection is a G1/2 thread (per ISO 228-1), and the approximate weight is 0.5 kg without cable. Outside the specified temperature range, sensor accuracy degrades. For liquid media, flow measurement outside the range is not guaranteed. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The sensor head operates based on the specific flow measurement technology (e.g., ultrasonic time-of-flight, electromagnetic induction, thermal dispersion, or differential pressure). It typically contains active elements that emit a signal (sound, magnetic field, heat) into the flow and/or passive elements that receive the signal after its interaction with the medium. The alteration of the signal (time delay, frequency shift, temperature change, induced voltage) is proportional to the flow rate. The sensor head converts these physical interactions into electrical signals for processing by the sensor's electronics.

Common Materials

Stainless Steel (316L), PEEK (Polyether Ether Ketone), Ceramic (Alumina)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Temperature	-40–85 °C	Outside this range, sensor accuracy degrades
Flow Measurement Range	0.1–10 m/s	For liquid media; outside range, accuracy not guaranteed
Accuracy	±0.5 % of reading	Under reference conditions
Repeatability	±0.1 % of reading	Under constant conditions
Supply Voltage	24 ±10% V DC	Reverse polarity protected
Output Signal	4–20 mA	Two-wire loop powered
Electrical Connection	M12×1 connector	4-pinIEC 61076-2-101
Ingress Protection	IP67	Dust-tight and protected against immersionIEC 60529
Sensor Material	316L stainless steel	Corrosion-resistant for most mediaASTM A276
Process Connection	G1/2 thread	Other sizes available on requestISO 228-1
Weight	0.5 kg	Approximate, without cable

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
The core transducer (e.g., piezoelectric crystal, coil, RTD) that converts the physical flow characteristic into an electrical signal.

Material: Piezoelectric Ceramic / Copper Coil / Platinum
Protective Housing / Sheath Part
Encases and protects the sensitive internal elements from the process medium, pressure, and mechanical damage.

Material: Stainless Steel / Hastelloy / PEEK
Cable Gland / Connector
Provides a sealed entry point for the signal cable and ensures environmental protection (IP rating).

Material: Stainless Steel / Brass with NBR/PUR gasket
O-ring / Seals Part
Creates a pressure-tight and fluid-tight seal between the housing and the process connection or between housing components.

Material: FKM (Viton) / EPDM / PTFE

Applied To / Applications

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

Reference Flow Sensor

View system integration details

Manufacturers of Pickup / Sensor Head

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Frequently Asked Questions

What is the operating pressure range of this sensor head?

The operating pressure range is 1.0–1.6 MPa.

What are the temperature limits for this sensor head?

The operating temperature range is -40 to 85 °C. Outside this range, sensor accuracy degrades, so it is important to stay within these limits for reliable measurement.

What is the flow measurement range and accuracy?

For liquid media, the flow measurement range is 0.1–10 m/s. Accuracy is ±0.5% of reading under reference conditions, and repeatability is ±0.1% under constant conditions. Outside the flow range, accuracy is not guaranteed.

What electrical and connection specifications does it have?

It operates on a 24 V DC supply (24 ±10%) with reverse polarity protection, and provides a 4–20 mA two-wire loop-powered output. The electrical connection is a 4-pin M12×1 connector per IEC 61076-2-101. The ingress protection is IP67 per IEC 60529.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 100 bar
flow rate:	0.1 to 10 m/s
temperature:	-40°C to 150°C
slurry concentration:	Up to 20% solids by weight

Pickup / Sensor Head

Product Specifications

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Application Fit & Sizing Matrix

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