Burkert 8681 - Position Measuring System Data

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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)
“Fig.7” 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 „7.2
Assembly of the control head“.
english
Control Head Type 8681