The ERM
incremental modular rotary encoders consist of a magnetized
circumferential scale drum and a scanning unit with
magnetoresistive sensor. These encoders are available for
diameters of 80 and 180 mm:
Drum
inside diameter D1
180
mm
80
mm
Outside
diameter D2
257.5
mm
128.75
mm
Line
count
2048
1024
Permissible
speed (mech.)
8000
rpm
18000
rpm
Typical applications include machines and systems with large
hollow-shaft diameters where protection from dust and
splashwater is required.