Apparatus and method for standardizing a pipeline pig detector

Details Apparatus and method for standardizing a pipeline pig detector Apparatus and method for standardizing a pipeline pig detector

1976-01-15

1978-03-21

Woodiel, Donald O.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01F 2500

Patent

active

040796191

ABSTRACT:
A detector assembly having a movable trigger adapted to adjustably activate a signaling means is removably mounted on a fixed base attached to a pipeline. A pig passing through the pipeline displaces the detector's trigger through a certain minimum distance to activate the signaling means. A calibrated jig is provided and configured to hold the detector assembly and move its trigger through this same minimum distance. The jig thus simulates the presence of a pig.
A method of calibrating a pig detector is also disclosed. A detector assembly is mounted in the jig and the signaling means is adjusted until it just activates. This adjustment is fixed and the calibrated detector replaced on its permanent mount. All similarly calibrated detectors will signal when a pig reaches the same point in the pipeline.

REFERENCES:
patent: 3145274 (1964-08-01), Van Scoy et al.
patent: 3419690 (1968-12-01), Garig
patent: 3419692 (1968-12-01), Palen

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