27
Technical Data
6.7
Position measuring system data
Stroke range (measuring range): 0 ... 80 mm
Resolution:
≤ 0.1 mm
Total error:
± 0.5 mm - when using a target (in accordance with the dimensional
drawing) and a piston rod (Ø 22 mm)
(fault refers to the reproducibility of a taught position)
Target material:
ferromagnetic material (stainless steel 1.4021)
Piston rod material:
not ferromagnetic material (see note
(*)
below)
shows the dimensional relationships between the control head and the piston with target.
Target
(1.4021)
(in the upper end
position)
Piston rod (*)
(in the upper end
position)
Note upper end position of the
target (H 156.5 mm) to prevent
putting control head at risk!
Target
(1.4021)
(in the lower end position)
Piston rod (*)
(in the lower end position)
(maximum stroke: 80 mm)
Fig. 7:
Sectional view of control head and piston with target (in upper and lower end position)
(*)
The fastening materials
for target and piston rod, as well as
the piston rod itself,
may not be made of
material with very good electrical conductivity (e.g. copper, aluminum) or of ferromagnetic material.
Stainless steel without ferromagnetic properties is suitable (if necessary, check after machining).
The details for the assembly of the control head to the process valve are described in chapter
Assembly of the control head“.
english
Control Head Type 8681
Summary of Contents for 8681
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