Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1995-01-31
1996-12-31
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
431 76, F23N 500
Patent
active
055896278
ABSTRACT:
Apparatus is provided for detecting faults in a sensor providing an output voltage representative of aeration of a combustible mixture. The apparatus comprises a control box which checks whether the value of a reference voltage with which the output voltage is compared to control the aeration is suitable for causing an intended value of the aeration to be maintained.
REFERENCES:
patent: 4492559 (1985-01-01), Pocock
patent: 4676213 (1987-06-01), Itsuji et al.
patent: 5037291 (1991-08-01), Clark
British Gas plc
Raevis Robert
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