US 11,740,175 B2
Method and device for compensating temperature gradient effects
Matthias König, Munich (DE)
Assigned to TDK Corporation, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Oct. 18, 2021, as Appl. No. 17/504,267.
Claims priority of application No. 102020127455.6 (DE), filed on Oct. 19, 2020.
Prior Publication US 2022/0120666 A1, Apr. 21, 2022
Int. Cl. G01N 21/03 (2006.01); G01N 21/74 (2006.01); G01N 21/61 (2006.01)
CPC G01N 21/0332 (2013.01) [G01N 21/61 (2013.01); G01N 21/74 (2013.01); G01N 2021/745 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for compensating a temperature gradient effect for gas concentration sensors, the method comprising:
variating a temperature gradient;
measuring a variation of gas concentration depending on the variation of the temperature gradient;
analysing a dependence of the gas concentration and the temperature gradient for setting up an error correction function; and
applying the error correction function to correct measured values of the gas concentration.