Chemistry: electrical and wave energy – Processes and products
Patent
1979-04-17
1980-06-10
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
128635, 137 2, 204195P, 324425, G01N 2746, A62B 702
Patent
active
042071461
ABSTRACT:
A testing device for the partial pressure testing of gases in body fluids comprises a test electrode having a platinum wire extending through a glass tubule arranged in a synthetic tube having a tip with a cellophane layer thereon. The electrode and a counter-electrode are connected through a switch to a pulse generator for generating a control pulse and for also generating a bias voltage pulse. A transverse storage unit is also connected to the switch through a test amplifier. A logic element is connected to the transverse storage for establishing a pulse width, and it is connected through a pulse delay unit and delay circuit. The storage unit is also connected through an amplifier and comparator to a control, warning or indication device. A bias voltage is fed in a pulse to the test electrode, and a test pulse resulting from the current flow of the test electrode is converted to a transfer pulse of a width smaller than that of the test pulse, which is proportional to the amplitude section of the test pulse. The test pulse amplitudinal value is taken over by the transfer pulse and forms the input for a test and/or control circuit.
REFERENCES:
patent: 3493485 (1970-02-01), MacArthur
patent: 4042465 (1977-08-01), Morong et al.
M. Kogoma et al., Chemical Instrumentation, vol. 7, No. 3, pp. 193-209, (1976).
Dragerwerk Aktiengesellschaft
Kaplan G. L.
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