Measuring arrangement having a capacitive measuring electrode an

Details Measuring arrangement having a capacitive measuring electrode an Measuring arrangement having a capacitive measuring electrode an

1986-02-03

1987-07-21

Paschall, M. H.

Electric heating

Metal heating

By arc

21912402, 219121PT, 219121PV, 318632, 318662, 33125T, 266 76, B23K 1500

Patent

active

046820043

ABSTRACT:
In a measuring arrangement for measuring or regulating spacing on thermal working machines (for example, flame cutting installations), two capacitive electrodes are arranged at different spacings from the workpiece. Interference signals can result from changes in the dielectric constant between the electrodes and the workpiece during the thermal working operation. The output signals of the two electrodes are in negative feedback relationship for compensation purposes.

REFERENCES:
patent: 3809308 (1974-05-01), Roeder et al.
patent: 4101754 (1978-07-01), Fischer
patent: 4298784 (1981-11-01), Schmall
patent: 4300226 (1981-11-01), Barnette et al.
patent: 4463298 (1984-07-01), Halbauer

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