Self calibrating environmental condition sensing and recording a

Details Self calibrating environmental condition sensing and recording a Self calibrating environmental condition sensing and recording a

1978-01-26

1980-03-25

Morrison, Malcolm A.

Boots, shoes, and leggings

364422, 235 92MT, 73152, 73154, 73345, E21B 4706, G01L 704

Patent

active

041953495

ABSTRACT:
Apparatus for measuring and recording environmental conditions in a deep bore hole using a down hole gauge including pressure and temperature sensors and data processing elements is disclosed. A pressure transducer such as a Bourdon tube is provided for measuring the down hole pressure. An encoder coupled to the pressure transducer produces a plurality of data bits defining a coded word representative of the down hole pressure. A temperature transducer is also provided for measuring the down hole temperature. An oscillator is coupled to the temperature transducer for providing a timing signal having a frequency which is proportional to the down hole temperature. Serial shift registers are provided for recording data bits in separate groups of bits defining data words which are representative of the down hole pressure and temperature conditions. Temperature information is integrated into each data word by sequentially gating the pressure data bits into a serial shift register at a rate which is proportional to the frequency of the temperature-dependent timing signal.

REFERENCES:
patent: 2922990 (1960-01-01), Anderson
patent: 3807860 (1974-04-01), Brainard
patent: 4031365 (1977-06-01), Raggiotti et al.
patent: 4033186 (1977-07-01), Bresie
patent: 4064396 (1977-12-01), Panarello

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