| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas sensor device dispensing with conventional complicated work that has been executed for preliminarily acquiring a relationship between a moisture concentration corresponding value of a detection object gas and a difference in pump currents for each gas sensor individually.SOLUTION: A gas sensor device 4 comprises: a gas sensor 1 including an oxygen concentration detection cell 50 and an oxygen pump cell 40; and a sensor control device 3 connected to the gas sensor 1. The sensor control device 3 includes a current detection part 36 that detects a pump current flowing to the oxygen pump cell 40, and a moisture concentration detection part 220 that detects a moisture concentration corresponding value corresponding to the moisture concentration of the detection object gas on the basis of the current detected by a current detection part 36, when an atmosphere determination part determines that the detection object gas is an atmosphere. The moisture concentration detection part 220 determines the moisture concentration corresponding value on the basis on a value obtained by multiplying a difference between a second pump current and a first pump current by a fixed coefficient K1 (K1 is a positive value other than 1).SELECTED DRAWING: Figure 2 |
