Considerations when choosing a displacement sensor

2021-09-15

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Considerations for selecting linear displacement sensors Displacement sensors, as an important component of the sensor family, are increasingly used in the field of industrial automation, but there are many misunderstandings in the selection process. Let's take a look at the selection of displacement sensors. The center that needs attention.

The length of the displacement should first be estimated to be the length that needs to be measured, that is, the range of the sensor. It should be noted that a margin must be left in the actual selection. Installation method According to the site conditions, select the suitable displacement sensor for installation, such as rod, slide or rope control and other types or ranges.

Consider the installation of the sensor according to the actual situation of the moving parts in the field, and consider the reasonable method of installing the sensor, especially in extreme or harsh environments, such as waterproof measures in the open air environment, shock absorption measures for sensors in severe vibration environments, extreme The influence of the upper and lower temperature environment on the sensor, etc.

The connection parts between the moving parts and the sensor should be as reliable as possible, which can be a fixed mechanical interface or a probe with a spring biased to follow the moving surface. If the connection is not strong and the looseness is caused, the sensor may be damaged, such as a pull-rope displacement sensor. . Vibration conditions require careful consideration of the effects of vibration on the sensor and whether this may be detrimental to operation and sensor operation. This factor enables different sensing element options - contact or non-contact.