Exhaust gas measuring device and display method for exhaust gas measuring device

Abstract

The present invention provides an exhaust gas measuring device and a display method for the exhaust gas measuring device. Before the pressure regulating valve can not adjust the pressure and the exhaust gas measurement can not continue, the user can predict the period of the above occurrence, and perform maintenance on the filter and pump before the measurement is completely impossible, so as to prevent the measurement from being interrupted during the measurement. The exhaust gas measurement The device includes: a pressure regulating valve (331), which maintains the pressure of the sample gas in the sensor channel (32) or the bypass channel (33) at a set pressure value; a flow sensor (332), which is arranged in the On the bypass channel (33), measure the flow rate of the sample gas flowing through the bypass channel; and remind the attention part (41), when the flow measurement value measured by the flow sensor (332) is reminding attention When the flow value is lower than the flow value, it indicates that the flow rate of the sample gas is reduced, and the flow value of the reminder is only greater than the specified value than the pressure regulation limit flow value which is the lower limit flow value of the pressure regulating valve (331).

Description

technical field [0001] The present invention relates to an exhaust gas measuring device for analyzing components contained in exhaust gas exhausted from an engine, etc., and a display method for the exhaust gas measuring device used in the exhaust gas measuring device. Background technique [0002] As such an exhaust gas measurement device, carbon monoxide (CO), total hydrocarbons (THC), nitrogen oxides (NO X ), carbon dioxide (CO 2 ) etc. (refer to Patent Document 1 (Japanese Patent Laid-Open Publication No. 2003-149099)). [0003] Specifically, the above-mentioned exhaust gas measuring device such as Figure 4 As shown, in the exhaust gas measurement device 3, two flow channels are branched from the introduction flow channel 31 that introduces the sample gas containing exhaust gas, and one flow channel is used as the sensor flow channel 32, which is provided for measuring each A plurality of gas analyzers 322 for one component, and the other flow path is used as a bypass...

AI Technical Summary

Problems solved by technology

[0006] However, this exhaust gas measuring device notifies the user of the abnormality of the exhaust gas measuring device only when the filter is clogged so that the exhaust gas measurement cannot be continued at all, or the capacity of the pump is reduced.

In other words, the user is notified of an abnormality in the device only when a serious problem such as being unable to continue the measurement of the exhaust gas occurs, so the user cannot grasp the time when the measurement cannot be performed in advance, and sometimes has to stop the measurement in the middle of the measurement of the exhaust gas.

In this way, the measurement data interrupted in the middle of the exhaust gas measurement has to be discarded due to the continuity of the measurement conditions, etc., so that the exhaust gas measurement that has been carried out becomes invalid.

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