Patent ID: 9719891
Date: 2017-08-01
CPC Classifications: G01N,Y02A

Claim:
1. A simultaneous multipoint testing system for analyzing the composition of a fluid in a duct, the system comprising: a first probe and a second probe, each of the first and second probes comprising: a global mixing chamber in fluid communication with the outputs of the first and second probes and configured to receive the probe fluid samples from the first and second probes and generate a global fluid sample comprising a mixture of the probe fluid samples from the first and second probes; an analyzer configured to receive at least a portion of the global fluid sample and measure levels of predetermined compounds present in the at least a portion of the global fluid sample, and a calibration system comprising a calibration fluid source configured to provide a calibration fluid directly to the probe mixing chambers of the first and second probes, such that the calibration fluid is provided to the probe mixing chambers of the first and second probes without first passing through the duct, the calibration fluid provided at a pressure sufficient to prevent fluid from the duct from entering the first and second probes, the calibration fluid comprising known levels of the predetermined compounds.