46 Displacement Sensor Manufacturers in 2022
This section provides overview, applications, and principles of displacement sensors. Also, please take a look at the list of 46 displacement sensor manufacturers and their company rankings.
Table of Contents
What is a Displacement Sensor?
A displacement sensor is a sensing device that measures the distance between the object to be measured and the sensor, as well as the thickness and height of the object itself. There are various types of sensors, ranging from contact sensors to non-contact sensors using lasers, depending on the intended use.
Applications of Displacement Sensors
Displacement sensors can be used to measure the distance between a processing or conveyance device and the object to be measured when the distance needs to be accurately determined.
They are also used in situations where thickness information of the object to be measured is required, such as in product appearance inspections. Thickness measurement can be performed with contact-type calipers, but if the object has a complicated shape or is inconvenient to touch, a non-contact displacement sensor can be used for nondestructive inspection.
Principle of Displacement Sensors
In principle, laser displacement sensors enable non-contact measurement, but there are several other types of methods.
When measuring the distance to a certain object to be measured, either diffuse-reflection or normal-reflection laser displacement sensors are used. In either case, light from the laser source is reflected off the surface of the object to be measured, and the distance is determined by detecting the reflected light at the photosensitive area.
The photosensitive area has a certain area width, and the photosensitive area varies depending on the angle of the reflected light. When the photosensitive area changes, a corresponding electric current is detected, and this information is used to convert it into a distance value.
Due to its structure, if the light source is incident on the surface of the object to be measured that is inclined beyond a certain angle, the reflected light will not be returned to the photosensitive area and therefore cannot be detected. This allowable tilt depends on the design of the displacement sensor, and in general, displacement sensors with the diffuse reflection method have a wider detection angle.
How to Select a Displacement Sensor
First, check whether the application is to detect distance or to acquire shape information such as thickness and height. If it is for distance detection, select a product that can measure more than that angle, assuming how much the surface of the object to be measured is inclined, from among those that meet that measurement range. For thickness measurement, check the detection range.
Then, depending on how accurate you want the measurement itself to be, select the specifications for resolution, detection accuracy, and linearity. All of these factors affect measurement accuracy, and in general, the higher the accuracy, the more expensive the product, so be careful not to over-specify.
In addition to measurement accuracy, it is also a good idea to note whether the unit itself can be installed. If there is not enough space for the mounting area, it may be necessary to select a small displacement sensor.
Linear Displacement Sensors and Rotational Angle Displacement Sensors
Displacement sensors are broadly classified into linear displacement sensors and rotational angle displacement sensors. The linear displacement sensor measures length, while the angular displacement sensor measures angle.
In the case of linear displacement sensors, electromagnetism, resistance change, light, and ultrasonic waves are used for detection, while electromagnetism, resistance change, and light are used for rotational angle displacement sensors.
1. types of linear displacement sensors
- Electromagnetism: differential transformer, linear scale
- Resistance Change: linear potentiometers
- Optical: linear scales, linear encoders
- Ultrasonic: ultrasonic reflection sensors
2. types of rotary angle displacement sensors
- Electromagnetism: Synchro, resolver
- Resistance Change: rotary potentiometers
- Optical: encoders, optical potentiometers
List of 46 Displacement Sensor Manufacturers
*Including some distributors, etc.
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Unipulse
Displacement sensor
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Keyence
Inductive displacement sensor
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Optex-FA
Displacement sensor
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OMRON Industrial Automation
Displacement sensor
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Pepperl+Fuchs Inc.
Displacement Sensors
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Displacement Sensor Manufacturer Ranking
*Including some distributors, etc.Ranking as of January 2023 in United States
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Keyence | 40% |
| 2 | Exsenco, LLC - US division for Santest Co. | 20% |
| 3 | OMRON Industrial Automation | 20% |
| 4 | Klaschka Industrieelektronik | 20% |
Ranking as of January 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Keyence | 40% |
| 2 | Exsenco, LLC - US division for Santest Co. | 20% |
| 3 | OMRON Industrial Automation | 20% |
| 4 | Klaschka Industrieelektronik | 20% |
Derivation Method
The ranking is calculated based on the click share within the displacement sensor page as of January 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
- OMRON Electronic Components: 29,020
- Delta Electronics: 15,700
- Renishaw: 5,000
Newly Established Company
- ORBIT MERRET: 1998 (25 years ago)
- FMS Force Measuring Systems: 1993 (30 years ago)
- Applied Measurements: 1991 (32 years ago)
Company with a History
- OMRON Electronic Components: 1933 (90 years ago)
- Solartron Metrology: 1946 (77 years ago)
- FSG: 1946 (77 years ago)
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