Measurement Head for Thickness Sensors

Product Specifications

Technical details and manufacturing context for Measurement Head

Definition

The measurement head is the critical interface component of a thickness sensor that performs the actual measurement function. It contains the sensing elements (such as ultrasonic transducers, laser emitters/receivers, or capacitive probes) that detect material thickness. As part of the thickness sensor system, it converts physical thickness variations into measurable electrical signals for processing and display. The measurement head is designed for direct contact or non-contact interaction with the material, depending on the sensing principle. It is typically housed in a stainless steel enclosure, with ceramic or quartz sensing elements, copper wiring, and epoxy encapsulation for protection. The head operates within a specified measuring range of 0–10 mm, with a resolution of 0.001 mm and accuracy of ±0.005 mm under reference conditions. Repeatability is ±0.002 mm at constant temperature. The operating temperature range is -10 to 60 °C, and storage temperature is -20 to 70 °C. The supply voltage is 24 V DC ±10%, with current consumption ≤50 mA without load. The output signal is analog, two-wire, 4–20 mA. The protection class is IP65 per IEC 60529, and the wetted parts are made of stainless steel 316L per ASTM A240. Weight ranges from 0.5 to 1.5 kg depending on cable length and options. These values are directory reference ranges and must be confirmed for the specific model and application. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The measurement head operates by emitting a signal (ultrasonic waves, laser light, or electromagnetic field) toward the material surface, then detecting the reflected or transmitted signal. The time delay, intensity change, or phase shift of the signal is analyzed to determine material thickness. Different measurement heads use various principles: ultrasonic heads measure time-of-flight, laser heads use triangulation or interferometry, and capacitive heads detect changes in capacitance.

Common Materials

Stainless steel housing, Ceramic or quartz sensing elements, Copper wiring, Epoxy encapsulation

Technical Parameters

Parameter	Typical range	Notes & selection driver
Measuring Range	0–10 mm	Standard range; custom ranges available
Resolution	0.001 mm	Higher resolution for precision applications
Accuracy	±0.005 mm	Under reference conditions
Repeatability	±0.002 mm	At constant temperature
Operating Temperature	-10–60 °C	Outside range may affect accuracy
Storage Temperature	-20–70 °C	Non-condensing environment
Supply Voltage	24 ±10% V DC	Reverse polarity protected
Current Consumption	≤50 mA	Without load
Output Signal	4–20 mA	Analog, two-wire
Protection Class	IP65	Dust-tight and protected against water jetsIEC 60529
Material	316L	Stainless steel wetted partsASTM A240
Weight	0.5–1.5 kg	Depends on cable length and options

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
Generates and/or receives the measurement signal (ultrasonic, laser, capacitive, etc.)

Material: Piezoelectric ceramic, laser diode, or capacitive plate
Housing Part
Protects internal components from environmental factors and provides mounting interface

Material: Stainless steel or aluminum alloy
Connector Part
Electrical interface for connecting to the sensor controller or signal processor

Material: Brass or plastic with gold-plated contacts
Wear Plate Part
Protective surface that contacts the material, designed for durability and consistent measurement

Material: Hardened steel, ceramic, or sapphire

Applied To / Applications

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

Thickness Sensor

View system integration details

Manufacturers of Measurement Head

Manufacturer profiles associated with Measurement Head.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the measuring range of the measurement head?

The standard measuring range is 0–10 mm, but custom ranges may be available. Always confirm the exact range for your specific model with the manufacturer.

What output signal does the measurement head provide?

The output signal is analog, two-wire, 4–20 mA. This is a standard industrial signal for transmitting measurement data to a control system.

What is the protection class of the measurement head?

The protection class is IP65 per IEC 60529, meaning it is dust-tight and protected against water jets. This makes it suitable for many industrial environments.

What materials are used in the measurement head?

The housing is typically stainless steel, with ceramic or quartz sensing elements, copper wiring, and epoxy encapsulation. Wetted parts are stainless steel 316L per ASTM A240.

Data Basis

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

Preliminary Technical Classification

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pressure:	0 to 10 bar
other spec:	Max slurry concentration: 40% solids by weight
temperature:	-20°C to 150°C

Measurement Head

Product Specifications

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Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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