The 6 Liters Per Minute (gold colored) Dry Gas Regulator Barb can be used to replace your 1.5 LPM. This fitting will produce a higher flow rate of gas which will activate the automatic sample capture on the Alco-Sensor FST. While this feature will allow a simpler Accuracy Check and Calibration procedure, it does use four times as much gas per like sample time than when a 1.5 lpm flow rate is utilized.
