Linear encoders
Sealed linear encoders
The glass scale is installed in the aluminum profile. The rubber seals protect from dust and splashes. High protection degree allows the use of linear encoders in many branches of industry and science. The choice of glass as a material for the manufacture of scales is due to its durability and lack of changes in accuracy characteristics during operation. All modern CNCs or coordinate measuring machines are equipped with linear encoders of this type.
Exposed linear encoders
The readhead moves along the measuring scale without physical contact with it. Depending on the operating conditions, it may be necessary to install a housing to protect the device from external influences.
Linear Gauges
Gauges with a rod, which are used in the contact measurement method, are a modern digital analogue of a well-known dial indicator. A spring-loaded rod with a corundum tip is mechanically connected to a linear guide located in the device body, on which, in turn, a glass scale is fixed.