The Benefits of Using Non-contact rotary caliper

Non-contact position sensors, also known as Contactless, Frameless, or Hollow Shaft Encoders, are considered to be a niche type due to their particular structure.

 

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The main goal of using a frameless encoder as part of a system design is to reduce the total size, weight, and cost of the system without compromising on the required high performance. Thus, frameless encoders enable the application engineer to achieve the goal of maximal system performance in a minimal size and weight factor.

Additionally, in systems where reliability and minimum maintenance are important, a frameless encoder provides the benefit of having no mechanical contact between the stationary and moving parts, therefore having no wear and no mechanical failure mechanism, common in other encoder types. This results in a higher MTBF and reduced maintenance requirements for the application.

In a frameless encoder, the encoders&#; static part, the stator, would be attached to the system chassis or stationary housing, while the rotating part, the rotor, attached to the moving/rotating element or axis of the system, also sometimes known as the load side of the system. This direct attachment to the load part of the system enhances the ability of the Encoder to provide a higher system accuracy.

Netzer Precision has unique product lines of the Electric Encoders&#; frameless/contactless rotary encoders that fully meet the industry requirements. Specifically designed to withstand extreme conditions, these encoders provide a versatile and reliable solution that is a perfect fit for many types of high-end applications.

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The capacitive encoder technology inside Netzers&#; Electric Encoders&#; provides position sensing simultaneously throughout the entire circumference of the encoder and is not dependent upon a single or double read head, therefore having a precise, reliable and repeatable position sensing.
This capability provides a higher mounting tolerance while maintaining performance. In order to understand this feature in more detail, please read our Application note.

Alongside non-contact encoders, many shaft encoders or housed encoders can be found in the market. The main advantage of these encoders is usually to allow simple integration with the existing shaft. However, in a high-performance application, it is a challenge for the system integrators to facilitate the precise and expensive mechanics required in order to achieve and maintain the required accuracy performance while using a contact encoder.

Do you want to know which absolute rotary encoder best suits your application? Contact our engineers for further information.

Q&A on Non-Contact Rotary Calipers

1. What advantages does a non-contact rotary caliper offer?

A non-contact rotary caliper provides several key advantages, especially in precision measurement and ease of use. The most notable benefits include:1. **Accuracy**: Non-contact rotary calipers utilize laser technology or other non-invasive methods to measure dimensions. This minimizes the possibility of errors that can occur from physical contact, ensuring highly precise measurements.2. **Speed**: These calipers generally provide instantaneous readings, allowing for faster measurement-taking without the need to adjust the tool to the workpiece. This can significantly reduce the time spent on quality control processes.3. **Material Integrity**: As they do not make physical contact with the object being measured, non-contact calipers are ideal for delicate materials. They prevent damage, scratches, or alterations to the surface of the object, which is especially crucial in industries like aerospace, electronics, and fine manufacturing.4. **Versatility**: Non-contact rotary calipers can be used on objects with complex shapes and surfaces that would be difficult to measure using traditional calipers. Their ability to measure various distances and dimensions on irregularly shaped items makes them a versatile tool in different industries.5. **Data Output**: Many non-contact rotary calipers come equipped with digital displays and can be connected to computers or other devices for data analysis. This feature enhances record-keeping and makes it easier to perform quality assurance processes in manufacturing settings.

2. How does a non-contact rotary caliper work?

Non-contact rotary calipers operate by employing technologies such as lasers, ultrasonic waves, or optical methods to gather measurements. The caliper emits a beam of light or sound towards the surface of an object. The time it takes for the signal to bounce back is measured, allowing the caliper to calculate the distance to the object. This ensures accurate readings without touching the surface.

3. In what industries are non-contact rotary calipers commonly used?

Non-contact rotary calipers find applications in various industries, including:- **Manufacturing**: For quality control processes, ensuring precise dimensions.- **Automotive**: To measure parts that require accuracy for fit and function.- **Aerospace**: For the precision measurement of critical components.- **Healthcare**: In surgical environments where precision is paramount.- **Electronics**: To measure tiny components without causing damage.

4. Are there any limitations to using non-contact rotary calipers?

While non-contact rotary calipers offer many benefits, they do have some limitations:- **Cost**: They can be more expensive than traditional calipers, which may affect budget decisions for smaller companies.- **Environmental Sensitivity**: External factors such as dust, humidity, and temperature may impact measurements.- **Calibration Needs**: They may require more frequent calibration to maintain accuracy compared to traditional tools.

5. How do you maintain a non-contact rotary caliper?

To ensure the longevity and accuracy of a non-contact rotary caliper, regular maintenance is essential. Key steps include:- **Cleaning**: Keep the lens or measurement area free from dust and debris.- **Calibration**: Follow the manufacturer&#;s instructions for periodic calibration.- **Storage**: Store in a protective case to avoid accidental damage.This simple maintenance routine can help maintain precise measurements over time, ensuring the high performance of the tool across all applications.

A non-contact rotary caliper provides several key advantages, especially in precision measurement and ease of use. The most notable benefits include:1. **Accuracy**: Non-contact rotary calipers utilize laser technology or other non-invasive methods to measure dimensions. This minimizes the possibility of errors that can occur from physical contact, ensuring highly precise measurements.2. **Speed**: These calipers generally provide instantaneous readings, allowing for faster measurement-taking without the need to adjust the tool to the workpiece. This can significantly reduce the time spent on quality control processes.3. **Material Integrity**: As they do not make physical contact with the object being measured, non-contact calipers are ideal for delicate materials. They prevent damage, scratches, or alterations to the surface of the object, which is especially crucial in industries like aerospace, electronics, and fine manufacturing.4. **Versatility**: Non-contact rotary calipers can be used on objects with complex shapes and surfaces that would be difficult to measure using traditional calipers. Their ability to measure various distances and dimensions on irregularly shaped items makes them a versatile tool in different industries.5. **Data Output**: Many non-contact rotary calipers come equipped with digital displays and can be connected to computers or other devices for data analysis. This feature enhances record-keeping and makes it easier to perform quality assurance processes in manufacturing settings.Non-contact rotary calipers operate by employing technologies such as lasers, ultrasonic waves, or optical methods to gather measurements. The caliper emits a beam of light or sound towards the surface of an object. The time it takes for the signal to bounce back is measured, allowing the caliper to calculate the distance to the object. This ensures accurate readings without touching the surface.Non-contact rotary calipers find applications in various industries, including:- **Manufacturing**: For quality control processes, ensuring precise dimensions.- **Automotive**: To measure parts that require accuracy for fit and function.- **Aerospace**: For the precision measurement of critical components.- **Healthcare**: In surgical environments where precision is paramount.- **Electronics**: To measure tiny components without causing damage.While non-contact rotary calipers offer many benefits, they do have some limitations:- **Cost**: They can be more expensive than traditional calipers, which may affect budget decisions for smaller companies.- **Environmental Sensitivity**: External factors such as dust, humidity, and temperature may impact measurements.- **Calibration Needs**: They may require more frequent calibration to maintain accuracy compared to traditional tools.To ensure the longevity and accuracy of a non-contact rotary caliper, regular maintenance is essential. Key steps include:- **Cleaning**: Keep the lens or measurement area free from dust and debris.- **Calibration**: Follow the manufacturer&#;s instructions for periodic calibration.- **Storage**: Store in a protective case to avoid accidental damage.This simple maintenance routine can help maintain precise measurements over time, ensuring the high performance of the tool across all applications.

For more information, please visit Non-contact rotary caliper for machine inspection, Rebar Measurement Instrument, Non-contact rotary caliper for industrial automation.

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