Method and apparatus for sampling or measuring a parameter of a

Details Method and apparatus for sampling or measuring a parameter of a Method and apparatus for sampling or measuring a parameter of a

1982-11-22

1984-05-22

Rutledge, L. Dewayne

Metallurgical apparatus

With control means responsive to sensed condition

By treated material sampling means

266 88, 266 89, G01F 2300

Patent

active

044497008

ABSTRACT:
The buoyancy change of a probe as it is lowered into a molten metal melt is detected and the lowering of the probe terminated a predetermined time after the detection of the buoyancy change to precisely position the probe at a predetermined level below the surface of the melt without the need for a contact detector which actually touches the melt.

REFERENCES:
patent: 3708159 (1973-01-01), De Bray
patent: 4003260 (1977-01-01), Catoal
patent: 4102190 (1978-07-01), Fradeneck et al.
Siemens "Galvanomagnetic Devices", Data Book 1976.
Ahrendt et al., "Servomechanism Practice", 2nd Edition, pp. 65-84, 1960.

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