Control apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 18, 2000
Grant Date -
N/A
app pub date -
Jun 3, 1998
filing date -
Jun 3, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a control apparatus, comprising an actuating drive and an actuator connected therewith, whereby the actuator comprises at least one valve face and a throttle element that works herewith. The throttle element can be moved relative to the valve face by means of an actuating spindle connected with the actuating drive for the execution of a rotational and/or piston motion. The actuating spindle is sealed against the valve interior chamber at a first sealing location. A second sealing location likewise seals the actuating spindle, and, between the two sealing locations. There is a test chamber that is accessible via at least one control terminal, to which chamber a pressure sensor is connected. The pressure sensor is connected with an evaluation unit for monitoring the operation of the control apparatus. The signal output of the pressure sensor can be compared, in the evaluation unit, with a response threshold dependent on at least one temperature signal, for the outputting of an error status message to an error status output of the evaluation unit.
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