Gas sensor and gas sensor system
First Claim
1. A gas sensor comprising:
- a gas exchange section including a gas exchanger having an inlet and an outlet for circulating a carrier solution including at least ions conjugate to a gas to be measured, and the gas exchanger isolated from the outside by a gas permeable membrane;
a forward path section connected to the inlet of the gas exchanger and for guiding the carrier solution to the gas exchanger;
a return path section connected to the outlet of the gas exchanger and for guiding the carrier solution from the gas exchanger to the outside;
a reference pH electrode arranged inside the forward path section; and
a measuring pH electrode arranged inside either the gas exchanger or the return path section.
1 Assignment
0 Petitions
Accused Products
Abstract
The conduit tube 3 and the conduit tube 4 to flow the carrier solution to the gas exchanger 7 are provided, and in the conduit tube 3, the reference pH electrode 14 is provided, and in the conduit tube 4, the measuring pH electrode 16 is provided. The gas exchanger 7 is partitioned from the outside by the gas permeable membrane 6. Initially, the gas exchange section 1 is inserted into the test substance, and next, the carrier solution is flowed at the speed of a degree in which the gas exchange is not conducted in the gas exchanger 7. The output potential difference ΔV(0) between the reference pH electrode 14 and the measuring pH electrode 16 at this time, is found. Next, the carrier solution is slowly flowed at a predetermined speed, so that the gas exchange is fully conducted in the gas exchanger 7, the output potential difference ΔV(t) between the reference pH electrode 14 and the measuring pH electrode 16 at time t is found, and the difference Δ ΔV(t) between the ΔV(t) measured at this time and the ΔV(0)obtained at the last time, is obtained. This value corresponds to the correct gas partial pressure change.
2 Citations
12 Claims
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1. A gas sensor comprising:
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a gas exchange section including a gas exchanger having an inlet and an outlet for circulating a carrier solution including at least ions conjugate to a gas to be measured, and the gas exchanger isolated from the outside by a gas permeable membrane;
a forward path section connected to the inlet of the gas exchanger and for guiding the carrier solution to the gas exchanger;
a return path section connected to the outlet of the gas exchanger and for guiding the carrier solution from the gas exchanger to the outside;
a reference pH electrode arranged inside the forward path section; and
a measuring pH electrode arranged inside either the gas exchanger or the return path section. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11)
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7. A gas sensor comprising:
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a gas exchange section including a gas exchanger having an inlet and an outlet for circulating a carrier solution including at least ions conjugate to a gas to be measured, and the gas exchanger isolated from the outside by a gas permeable membrane;
a forward path section connected to the inlet of the gas exchanger for guiding the carrier solution to the gas exchanger;
a return path section connected to the outlet of the gas exchanger for guiding the carrier solution from the gas exchanger to the outside;
a reference pH electrode arranged inside the forward path section; and
a measuring pH electrode arranged inside the gas exchanger, wherein the inlet and outlet are linearly provided in the gas exchanger. - View Dependent Claims (12)
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Specification