| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 3 m/s |
| Measuring wire/measuring tape material | Stainless steel |
Cable/tape transducers
A draw-wire sensor, also called – among other things – a wire-actuated encoder or draw-wire transducer, converts a linear movement into a rotary movement by means of a measuring wire. The rotation transforms the cable measuring path into an output signal. The output signals are output, e.g., via interfaces, as resistance change, as incremental signals or as current or voltage value. One application area for draw-wire transducers is, e.g., position determination. The draw-wire transducer is also suitable for telescopic movements.
In principle, tape extension sensors function in the same way as draw-wire sensors. Instead of the measuring wire, however, a stainless steel measuring tape is used. Due to its high flexibility, the measuring tape has a long service life. The tape sensor is especially well suited for applications in which deflection rollers are used for space reasons and high temperature fluctuations occur.
Application reports on the topic of draw-wire sensors
In diribo under Application Reports, you can find application reports prepared by suppliers on sensor category “Draw-wire sensors”. It is also possible to enter search terms here. Application reports related to a given topic can thereby be found. ... Read more
In principle, tape extension sensors function in the same way as draw-wire sensors. Instead of the measuring wire, however, a stainless steel measuring tape is used. Due to its high flexibility, the measuring tape has a long service life. The tape sensor is especially well suited for applications in which deflection rollers are used for space reasons and high temperature fluctuations occur.
Application reports on the topic of draw-wire sensors
In diribo under Application Reports, you can find application reports prepared by suppliers on sensor category “Draw-wire sensors”. It is also possible to enter search terms here. Application reports related to a given topic can thereby be found. ... Read more
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| Wire/tape measuring length/measurement range | 0 to 10 m |
| Measuring wire/measuring tape material | Stainless steel |
| Sensor type: draw-wire sensor or magnetic-tape sensor | Tape sensor |
| Wire/tape measuring length/measurement range | 0 to 4 m |
| Measuring wire/measuring tape material | Stainless steel |
| Sensor type: draw-wire sensor or magnetic-tape sensor | Tape sensor |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 4 m/s |
| Wire/tape measuring length/measurement range | 0 to 50 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 4 m/s |
| Wire/tape measuring length/measurement range | 0 to 40 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 4 m/s |
| Wire/tape measuring length/measurement range | 0 to 60,000 mm |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 8 m/s |
| Wire/tape measuring length/measurement range | 0 to 1 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 8 m/s |
| Wire/tape measuring length/measurement range | 0 to 3 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 4 m/s |
| Wire/tape measuring length/measurement range | 0 to 35 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 8 m/s |
| Wire/tape measuring length/measurement range | 0 to 2 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 8 m/s |
| Wire/tape measuring length/measurement range | 0 to 5 m |
| Wire/tape measuring length/measurement range | 0 to 20 m |
| Measuring wire/measuring tape material | Stainless steel |
| Sensor type: draw-wire sensor or magnetic-tape sensor | Tape sensor |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 8 m/s |
| Wire/tape measuring length/measurement range | 0 to 5 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 6 m/s |
| Wire/tape measuring length/measurement range | 0 to 15 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 3 m/s |
| Wire/tape measuring length/measurement range | 0 to 25 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 6 m/s |
| Wire/tape measuring length/measurement range | 0 to 20 m |
| Wire pull-out force, max. | 75 N |
| Movement speed, max. | 8 m/s |
| Wire/tape measuring length/measurement range | 0 to 10 m |
| Wire/tape measuring length/measurement range | 0 to 750 m |
| Measuring wire/measuring tape material | Stainless steel |
| Sensor type: draw-wire sensor or magnetic-tape sensor | Tape sensor |
| Movement speed, max. | 3 m/s |
| Wire/tape measuring length/measurement range | 0 to 12 m |
| Measuring wire/measuring tape material | Stainless steel Stainless steel (plastic coated) Paraline, non-conductive, signal color |
| Movement speed, max. | 800 mm/s |
| Resistance | 10 kΩ |
| Wire/tape measuring length/measurement range | 0 to 3 m |
The force that must be applied to pull out the rope is the rope pull-out force. Likewise, the pull-in force is also specified in the technical data of the draw-wire sensor. Furthermore, the maximum permissible rope acceleration must also be observed. Draw-wire displacement transducers are available with wire lengths up to approx. 60 m.
The rope connection is located at the accessible end of the measuring rope. The rope connection is offered as rope clip, threaded bolt, ring eye and rope hook, among others. The rotation converts the rope measuring path into an output signal. The measuring cable must be guided out of the cable tension sensor in a perpendicular position. If this is not structurally possible, a deflection pulley may be used. Redundant wire draw encoders are also offered.
The output signals are output e.g. via interfaces, as resistance change, encoder signals (absolute or incremental encoder) or as current or voltage value. One area of application for draw-wire transducers is, for example, position determination. The draw-wire transducer is also suitable for telescopic movements.
Draw-wire encoders are relatively easy to install and thus simple to retrofit. They have a relatively compact and robust design. Among other things, they are characterized by a long service life. Typical applications for wire draw encoders are e.g. lifting platforms, lifting movement of cylinders, forklifts and crane trucks.
Displacement tape sensors basically work like displacement cable sensors. A difference is that a stainless steel measuring tape is used instead of the measuring rope. The measuring tape has a long service life due to its high flexibility. The tape sensor is particularly suitable for applications where idler pulleys are used for space reasons and high temperature fluctuations occur.
The rope connection is located at the accessible end of the measuring rope. The rope connection is offered as rope clip, threaded bolt, ring eye and rope hook, among others. The rotation converts the rope measuring path into an output signal. The measuring cable must be guided out of the cable tension sensor in a perpendicular position. If this is not structurally possible, a deflection pulley may be used. Redundant wire draw encoders are also offered.
The output signals are output e.g. via interfaces, as resistance change, encoder signals (absolute or incremental encoder) or as current or voltage value. One area of application for draw-wire transducers is, for example, position determination. The draw-wire transducer is also suitable for telescopic movements.
Draw-wire encoders are relatively easy to install and thus simple to retrofit. They have a relatively compact and robust design. Among other things, they are characterized by a long service life. Typical applications for wire draw encoders are e.g. lifting platforms, lifting movement of cylinders, forklifts and crane trucks.
Displacement tape sensors basically work like displacement cable sensors. A difference is that a stainless steel measuring tape is used instead of the measuring rope. The measuring tape has a long service life due to its high flexibility. The tape sensor is particularly suitable for applications where idler pulleys are used for space reasons and high temperature fluctuations occur.
What is a draw-wire/displacement transducer and what is it used for?
A draw-wire/displacement transducer is a sensor that is used to measure the movement or displacement of an object. It consists of a cable or tape that is connected to the object to be measured and a housing that contains the sensor.
The transducer works by measuring the change in length of the rope or tape when the object is moved. This can be done by using strain gauges or other sensor technologies.
Draw-wire/displacement transducers are used in various applications where accurate measurement of movement or displacement is important. Examples include industrial machines, robotics, vehicle control systems, medical devices and many other applications where the position or movement of an object needs to be monitored.
The transducer works by measuring the change in length of the rope or tape when the object is moved. This can be done by using strain gauges or other sensor technologies.
Draw-wire/displacement transducers are used in various applications where accurate measurement of movement or displacement is important. Examples include industrial machines, robotics, vehicle control systems, medical devices and many other applications where the position or movement of an object needs to be monitored.
How does a draw-wire/displacement transducer work?
A draw-wire transducer is a device that is used to measure the change in length or movement of a wire rope or belt. It consists of a housing that contains the sensor and the electronic components.
The transducer consists of a cable or belt that is guided over a pulley or guide. At one end of the rope or tape there is a fastening device which is attached to the object to be measured. When the object is moved, the length of the rope or tape changes and this change is detected by the transducer.
The transducer contains sensors that measure the change in length or movement of the rope or belt. These sensors can use various technologies such as strain gauges, optical sensors or magnetic sensors. The measured data is then transmitted to the electronic components of the transducer.
The electronic components convert the measured data into electrical signals and process them further. This can include, for example, converting the change in length into a digital display or transmitting the data to a higher-level system.
Draw-wire or displacement transducers are used in various applications, for example in industry to measure positions or changes in length of machines or conveyor belts. They can also be used in vehicles to measure the movement of gas pedal pedals, brakes or steering wheels.
The transducer consists of a cable or belt that is guided over a pulley or guide. At one end of the rope or tape there is a fastening device which is attached to the object to be measured. When the object is moved, the length of the rope or tape changes and this change is detected by the transducer.
The transducer contains sensors that measure the change in length or movement of the rope or belt. These sensors can use various technologies such as strain gauges, optical sensors or magnetic sensors. The measured data is then transmitted to the electronic components of the transducer.
The electronic components convert the measured data into electrical signals and process them further. This can include, for example, converting the change in length into a digital display or transmitting the data to a higher-level system.
Draw-wire or displacement transducers are used in various applications, for example in industry to measure positions or changes in length of machines or conveyor belts. They can also be used in vehicles to measure the movement of gas pedal pedals, brakes or steering wheels.
What types of draw-wire/travel-belt transducers are there and what are the differences between them?
There are different types of draw-wire or travel tape transducers, which are used depending on the application and specific requirements. Here are some common types:
1. Potentiometer: This type of transducer consists of a resistance element that is changed by the pull of the cable or the travel band. The change in resistance can then be used to measure the distance or the tensile force. Potentiometers offer high resolution and accuracy, but are susceptible to wear and have a limited service life.
2. Strain gauge transducer: Strain gauges are thin metal foils that are applied to the cable tension or travel strip. When the rope or travel band is stretched, the resistance of the strain gauge changes and this can be used to measure tensile force or travel. Strain gauge transducers are more robust than potentiometers and have a longer service life, but may offer a lower resolution.
3. Magnetic transducers: With this type of transducer, a magnetic field is generated which is changed by the pull of the cable or the travel band. This change is then used to measure displacement or tensile force. Magnetic transducers offer high accuracy and are less susceptible to wear, but may require calibration and are sensitive to external magnetic fields.
4. Optical transducers: Optical transducers use light sensors to detect changes in the position of the cable pull or the travel band. This can be done using reflective markings or light barriers. Optical transducers offer high resolution and accuracy, but are sensitive to contamination and require clear lines of sight.
The differences between the various types of draw-wire/displacement transducers lie in their mode of operation, their accuracy, their robustness, their service life, their resolution, their sensitivity to external influences and their cost. Selecting the right type of transducer depends on the specific requirements of the application.
1. Potentiometer: This type of transducer consists of a resistance element that is changed by the pull of the cable or the travel band. The change in resistance can then be used to measure the distance or the tensile force. Potentiometers offer high resolution and accuracy, but are susceptible to wear and have a limited service life.
2. Strain gauge transducer: Strain gauges are thin metal foils that are applied to the cable tension or travel strip. When the rope or travel band is stretched, the resistance of the strain gauge changes and this can be used to measure tensile force or travel. Strain gauge transducers are more robust than potentiometers and have a longer service life, but may offer a lower resolution.
3. Magnetic transducers: With this type of transducer, a magnetic field is generated which is changed by the pull of the cable or the travel band. This change is then used to measure displacement or tensile force. Magnetic transducers offer high accuracy and are less susceptible to wear, but may require calibration and are sensitive to external magnetic fields.
4. Optical transducers: Optical transducers use light sensors to detect changes in the position of the cable pull or the travel band. This can be done using reflective markings or light barriers. Optical transducers offer high resolution and accuracy, but are sensitive to contamination and require clear lines of sight.
The differences between the various types of draw-wire/displacement transducers lie in their mode of operation, their accuracy, their robustness, their service life, their resolution, their sensitivity to external influences and their cost. Selecting the right type of transducer depends on the specific requirements of the application.
What advantages does a draw-wire/displacement transducer offer over other measuring instruments?
A draw-wire/displacement transducer offers several advantages over other measuring instruments:
1. High accuracy: Draw-wire/displacement transducers can perform very precise measurements and deliver accurate results. This is particularly important in applications where precise measurements are required, such as in industry or mechanical engineering.
2. Large measuring range: Draw-wire/displacement transducers can cover a large measuring range, from a few millimeters to several meters. This means that they can be used flexibly and can fulfill various requirements.
3. Robustness: Draw-wire/displacement transducers are generally very robust and resistant to external influences such as vibrations or shocks. This makes them ideal for use in demanding conditions, for example in the automotive or aerospace industries.
4. Easy handling: Draw-wire/displacement transducers are easy to use and do not require complex installation or calibration. They can be easily mounted in different locations and provide immediate measurement results.
5. Versatility: Draw-wire/displacement transducers can be used in various applications, such as for measuring tensile or compressive forces, for positioning machines or for monitoring movements. As a result, they are versatile and can be used in various industries.
Overall, draw-wire/displacement transducers offer a reliable and precise method of measuring force and displacement and therefore have many advantages over other measuring instruments.
1. High accuracy: Draw-wire/displacement transducers can perform very precise measurements and deliver accurate results. This is particularly important in applications where precise measurements are required, such as in industry or mechanical engineering.
2. Large measuring range: Draw-wire/displacement transducers can cover a large measuring range, from a few millimeters to several meters. This means that they can be used flexibly and can fulfill various requirements.
3. Robustness: Draw-wire/displacement transducers are generally very robust and resistant to external influences such as vibrations or shocks. This makes them ideal for use in demanding conditions, for example in the automotive or aerospace industries.
4. Easy handling: Draw-wire/displacement transducers are easy to use and do not require complex installation or calibration. They can be easily mounted in different locations and provide immediate measurement results.
5. Versatility: Draw-wire/displacement transducers can be used in various applications, such as for measuring tensile or compressive forces, for positioning machines or for monitoring movements. As a result, they are versatile and can be used in various industries.
Overall, draw-wire/displacement transducers offer a reliable and precise method of measuring force and displacement and therefore have many advantages over other measuring instruments.
What attributes should a draw-wire/displacement transducer have in order to deliver precise results?
A draw-wire/displacement transducer should have a number of attributes in order to provide precise results. Here are some important attributes:
1. Precision: The transducer should have a high measuring accuracy to enable precise and reliable measurements.
2. Linearity: The transducer should have a linear output span to ensure a linear relationship between the measured quantity and the output voltage.
3. Sensitivity: The transducer should be sensitive enough to detect even small changes in the measured quantity.
4. Repeatability: The transducer should have high repeatability to ensure consistent measurements over repeated tests.
5. Robustness: The transducer should be robust and durable to withstand the demands of a challenging environment.
6. Temperature compensation: The transducer should have temperature compensation so that measurements can be carried out accurately regardless of temperature fluctuations.
7. Fast response time: The transducer should have a fast response time in order to detect changes in the measured variable in real time.
8. Calibration options: The transducer should be calibratable to ensure that the measurements meet the specific requirements and standards.
9. Low noise: The transducer should have a low noise level in order to minimize interference and unwanted signals.
10. Compatibility: The transducer should be compatible with common measuring devices and control systems to enable smooth integration into existing systems.
1. Precision: The transducer should have a high measuring accuracy to enable precise and reliable measurements.
2. Linearity: The transducer should have a linear output span to ensure a linear relationship between the measured quantity and the output voltage.
3. Sensitivity: The transducer should be sensitive enough to detect even small changes in the measured quantity.
4. Repeatability: The transducer should have high repeatability to ensure consistent measurements over repeated tests.
5. Robustness: The transducer should be robust and durable to withstand the demands of a challenging environment.
6. Temperature compensation: The transducer should have temperature compensation so that measurements can be carried out accurately regardless of temperature fluctuations.
7. Fast response time: The transducer should have a fast response time in order to detect changes in the measured variable in real time.
8. Calibration options: The transducer should be calibratable to ensure that the measurements meet the specific requirements and standards.
9. Low noise: The transducer should have a low noise level in order to minimize interference and unwanted signals.
10. Compatibility: The transducer should be compatible with common measuring devices and control systems to enable smooth integration into existing systems.
Where are draw-wire/displacement transducers typically used?
Draw-wire or displacement transducers are typically used in various applications that require accurate measurement or monitoring of length changes or movements. Some common areas of application are:
1. Industrial machines: Draw-wire or displacement transducers are used in industrial machines to measure the movements or positions of components such as cylinders, valves or linear drives. This enables precise control and monitoring of machine operating sequences.
2. vehicle industry: In vehicles, especially in the automotive industry, draw-wire or displacement transducers are used to measure various parameters such as acceleration, steering movements or suspension travel. This helps to improve the safety, performance and driving characteristics of vehicles.
3. Medical devices: In the medical industry, draw-wire or displacement transducers are used to measure movements or changes in length in devices such as prostheses, rehabilitation equipment or surgical instruments. This enables precise control and adaptation of these devices to the patient's needs.
4. Space travel and aviation: In the aerospace and aviation industry, draw-wire or displacement transducers are used to measure movements, forces or positions of various components or systems in spacecraft or airplanes. This helps to monitor and control aircraft or spacecraft operations, navigation and safety.
5. Construction and infrastructure: Draw-wire or displacement transducers can also be used in civil engineering and infrastructure to measure movements, strains or displacements of structures such as bridges, buildings, tunnels or dams. This enables continuous monitoring of structural stability and can help in the early detection of damage or potential problems.
There are many other applications in which draw-wire or travel tape transducers can be used, depending on the specific requirements of the industry or application in question.
1. Industrial machines: Draw-wire or displacement transducers are used in industrial machines to measure the movements or positions of components such as cylinders, valves or linear drives. This enables precise control and monitoring of machine operating sequences.
2. vehicle industry: In vehicles, especially in the automotive industry, draw-wire or displacement transducers are used to measure various parameters such as acceleration, steering movements or suspension travel. This helps to improve the safety, performance and driving characteristics of vehicles.
3. Medical devices: In the medical industry, draw-wire or displacement transducers are used to measure movements or changes in length in devices such as prostheses, rehabilitation equipment or surgical instruments. This enables precise control and adaptation of these devices to the patient's needs.
4. Space travel and aviation: In the aerospace and aviation industry, draw-wire or displacement transducers are used to measure movements, forces or positions of various components or systems in spacecraft or airplanes. This helps to monitor and control aircraft or spacecraft operations, navigation and safety.
5. Construction and infrastructure: Draw-wire or displacement transducers can also be used in civil engineering and infrastructure to measure movements, strains or displacements of structures such as bridges, buildings, tunnels or dams. This enables continuous monitoring of structural stability and can help in the early detection of damage or potential problems.
There are many other applications in which draw-wire or travel tape transducers can be used, depending on the specific requirements of the industry or application in question.
What challenges can arise when using a cable pull/displacement transducer and how can they be solved?
Various challenges can arise when using a cable pull/displacement transducer, including
1. Wear and damage to the cable pull or travel band: Repeated movements and high loads can cause wear or damage to the rope or the conveyor belt. This can affect the accuracy of the measurements. Regular maintenance and inspection of the ropes or track belts is important in order to detect signs of wear at an early stage and replace them if necessary.
2. Inaccuracy of the measurements: Inaccurate measurements can occur if the cable or travel tape is not read or calibrated correctly. It is important to check the measuring device regularly and recalibrate it if necessary to ensure high accuracy of the measurements.
3. Extended measuring times: For long distances or complex measurements, the use of a draw-wire/displacement transducer can be time-consuming. In such cases, the use of automated measurement systems or other faster measurement methods can be considered to reduce measurement times.
4. Susceptibility to environmental influences: Cable pulls and travel belts can react sensitively to external influences such as temperature fluctuations, moisture or dirt. A suitable protective cover or the use of special materials that are resistant to environmental influences can help to increase the service life of the cable pull/travel tape transducer.
5. Complexity of the installation: The installation of a cable/track transducer can be challenging due to the need for precise alignment and mounting. It is important to follow the manufacturer's installation instructions carefully and, if necessary, consult specialists to ensure correct installation.
Regular maintenance, calibration and careful installation can solve or minimize many of the challenges of using a draw wire/displacement transducer. However, it is important to follow the manufacturer's specific requirements and recommendations to ensure optimum performance and accuracy.
1. Wear and damage to the cable pull or travel band: Repeated movements and high loads can cause wear or damage to the rope or the conveyor belt. This can affect the accuracy of the measurements. Regular maintenance and inspection of the ropes or track belts is important in order to detect signs of wear at an early stage and replace them if necessary.
2. Inaccuracy of the measurements: Inaccurate measurements can occur if the cable or travel tape is not read or calibrated correctly. It is important to check the measuring device regularly and recalibrate it if necessary to ensure high accuracy of the measurements.
3. Extended measuring times: For long distances or complex measurements, the use of a draw-wire/displacement transducer can be time-consuming. In such cases, the use of automated measurement systems or other faster measurement methods can be considered to reduce measurement times.
4. Susceptibility to environmental influences: Cable pulls and travel belts can react sensitively to external influences such as temperature fluctuations, moisture or dirt. A suitable protective cover or the use of special materials that are resistant to environmental influences can help to increase the service life of the cable pull/travel tape transducer.
5. Complexity of the installation: The installation of a cable/track transducer can be challenging due to the need for precise alignment and mounting. It is important to follow the manufacturer's installation instructions carefully and, if necessary, consult specialists to ensure correct installation.
Regular maintenance, calibration and careful installation can solve or minimize many of the challenges of using a draw wire/displacement transducer. However, it is important to follow the manufacturer's specific requirements and recommendations to ensure optimum performance and accuracy.
What technological developments are there in the field of draw-wire/travel-belt transducers and how do they influence their possible applications?
There are various technological developments in the field of draw-wire/displacement transducers that influence their possible applications. Here are some examples:
1. Optical displacement transducers: This type of transducer uses optical sensors to measure the path or position of an object. They offer high accuracy and are particularly suitable for applications where precise positioning is required.
2. Magnetic displacement transducers: These transducers use magnetic fields to measure displacement or position. They are robust and reliable and are well suited for use in harsh environments where vibrations and shocks can occur.
3. Ultrasonic displacement transducer: These transducers use ultrasonic signals to measure displacement or position. They offer high measuring accuracy and are particularly suitable for applications where non-contact measurement is required.
4. Intelligent displacement transducers: These sensors are equipped with additional electronics that make it possible to process and analyze the measured data. This allows them to detect errors, for example, or make automatic adjustments to improve the accuracy of the measurement.
These technological developments have expanded the use of draw-wire/travel-belt transducers in various applications. They enable more precise measurement of displacement or position, increase reliability and open up new application possibilities in areas such as automation, robotics, mechanical engineering, medical technology and many others.
1. Optical displacement transducers: This type of transducer uses optical sensors to measure the path or position of an object. They offer high accuracy and are particularly suitable for applications where precise positioning is required.
2. Magnetic displacement transducers: These transducers use magnetic fields to measure displacement or position. They are robust and reliable and are well suited for use in harsh environments where vibrations and shocks can occur.
3. Ultrasonic displacement transducer: These transducers use ultrasonic signals to measure displacement or position. They offer high measuring accuracy and are particularly suitable for applications where non-contact measurement is required.
4. Intelligent displacement transducers: These sensors are equipped with additional electronics that make it possible to process and analyze the measured data. This allows them to detect errors, for example, or make automatic adjustments to improve the accuracy of the measurement.
These technological developments have expanded the use of draw-wire/travel-belt transducers in various applications. They enable more precise measurement of displacement or position, increase reliability and open up new application possibilities in areas such as automation, robotics, mechanical engineering, medical technology and many others.