System lag time depends on velocity and volume
The second item to consider, and one of the first things to calculate, is the system lag time. System lag time is the sum of the analyzer cycle/measurement time and the sample lag time.
Sample lag time is the amount of time it takes for the sample to travel from the sample point to the analyzer sensor. It is simply the volume of the sample system divided by the velocity of the flow and can be calculated using Equation 1.