Patent ID: 9110040
Filing Date: 2015-08-18
Classification: B01D,F01N,G01N

Abstract:
1. An exhaust gas measurement device comprising: an introduction flow line to which sample gas containing exhaust gas is introduced; a sensor flow line branched from the introduction flow line and provided with at least one gas analyzer configured for continuous measurement of components contained in the sample gas; a bypass flow line branched from the introduction flow line so as to bypass a part of the sample gas; a flow rate sensor provided on the bypass flow line and adapted to measure a flow rate of the sample gas flowing through the bypass flow line; a pressure regulator adapted to keep a pressure of the sample gas in the sensor flow line or the bypass flow line to be a set pressure value provided the flow rate is greater than a pressure controlling limit flow rate value; and an attention attracting part programmed to display that the flow rate is reduced in the case where a flow rate measurement value of the sample gas measured by the flow rate sensor becomes equal to or less than an attention attracting flow rate value to provide a user an advanced warning that the continuous measurement will be interrupted and become impossible, the attention attracting flow rate value being greater than the pressure controlling limit flow rate value, and the at least one gas analyzer being programmed to continue the continuous measurement after the flow rate measurement value of the sample gas measured by the flow rate sensor becomes equal to or less than the attention attracting flow rate value.