Torque Monitoring Sensor for Bottle Capping

Product Specifications

Technical details and manufacturing context for Torque Monitoring Sensor

Definition

The Torque Monitoring Sensor is a precision component designed for integration into automated bottle capping machines used in beverage manufacturing. It continuously measures the torque applied to bottle caps during the sealing process, ensuring proper cap tightness by monitoring rotational force in real time. This helps prevent under-tightening, which can cause leaks, and over-tightening, which can damage caps or bottles. The sensor typically operates using strain gauges or magnetoelastic principles to detect torsional stress on the capping spindle. As torque is applied, mechanical deformation is converted into electrical signals, which are processed by the machine's control system to maintain optimal sealing parameters. The sensor is housed in a stainless steel (304) enclosure, with strain gauge elements, copper wiring, and epoxy encapsulation for durability in beverage environments. Key parameters include a torque range of 0.5–10 N·m, accuracy of ±0.5% FS, sampling rate of 1000–5000 Hz, output signal of 4–20 mA, supply voltage of 24 V DC (±10%), operating temperature of -10 to 60 °C, ingress protection of IP65–IP67 (per IEC 60529), overload capacity of 150% FS, and weight of 0.5–2 kg. These values are reference ranges; model-specific specifications must be confirmed with the manufacturer. The sensor is designed for washdown environments and offers corrosion resistance. For integration, verify compatibility with your capping machine's control system and ensure the torque range covers your application requirements. Regular calibration and maintenance are recommended to maintain accuracy. The sensor provides real-time feedback, enabling immediate adjustments to capping parameters. It is not a standalone device but a component that requires proper installation and configuration. Always consult the supplier for detailed technical data and installation guidelines.

Working Principle

The sensor uses strain gauges or magnetoelastic elements to detect torsional stress on the capping spindle. When torque is applied during cap tightening, the mechanical deformation of the spindle is converted into electrical signals. These signals are transmitted to the machine's control system, which processes them to monitor and adjust the capping process in real time, ensuring consistent sealing quality.

Common Materials

Stainless steel housing, Strain gauge elements, Copper wiring, Epoxy encapsulation

Technical Parameters

Parameter	Typical range	Notes & selection driver
Torque Range	0.5–10 N·m	Select range to cover capping torque requirements
Torque Accuracy	±0.5 % FS	Higher accuracy for critical caps
Sampling Rate	1000–5000 Hz	Faster for high-speed capping lines
Output Signal	4–20 mA	Analog output for PLC integration
Supply Voltage	24 ±10% V DC	Standard industrial supply
Operating Temperature	-10–60 °C	Outside range may affect accuracy
Ingress Protection	IP65–IP67	IP67 for washdown environmentsIEC 60529
Overload Capacity	150 % FS	Without damage
Material	304 Stainless Steel	Corrosion resistant for beverage environmentASTM A276
Weight	0.5–2 kg	Depends on model and range

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

Strain Gauge Assembly Part
Converts mechanical deformation into electrical resistance changes when torque is applied

Material: Constantan foil
Signal Conditioning Circuit
Amplifies and processes weak electrical signals from strain gauges

Material: Printed circuit board with electronic components
Protective Housing Part
Shields internal components from moisture, dust, and mechanical damage in industrial environments

Material: Stainless steel
Magnetoelastic Element Optional
Senses torsional stress magnetically instead of with bonded gauges, on that variant.

Manufacturers of Torque Monitoring Sensor

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Frequently Asked Questions

What is the typical torque range for this sensor?

The sensor has a reference torque range of 0.5–10 N·m. However, the exact range depends on the specific model and application. Always verify the required range with the manufacturer to ensure it covers your capping torque requirements.

How does the sensor output signal interface with a PLC?

The sensor provides a 4–20 mA analog output signal, which is commonly used for PLC integration. This allows the control system to read the torque value in real time. Confirm the input specifications of your PLC to ensure compatibility.

What is the ingress protection rating and why is it important?

The sensor has an ingress protection rating of IP65–IP67 per IEC 60529. This indicates resistance to dust and water, making it suitable for washdown environments common in beverage manufacturing. Higher ratings provide better protection against water jets and immersion.

Can the sensor withstand overload conditions?

The sensor has an overload capacity of 150% of full scale without damage. This means it can handle temporary torque spikes beyond its rated range. However, prolonged overload may affect accuracy, so it is important to select a sensor with an appropriate range for your application.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 100 bar
other spec:	Torque range: 0.1-100 Nm, Accuracy: ±0.5% FS, Response time: <10 ms
temperature:	-10°C to +60°C

Torque Monitoring Sensor

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