For the municipality of the same name in Gloucester County, see Monroe Township, Gloucester County, New Jersey.
How to measure dissolved oxygen. Dissolved oxygen is measured using a dissolved oxygen meter. The best method is to take the measurement in the field at the same time each day because DO concentrations can vary throughout a 24 hour period.issolved oxygen (DO) is a measure of the quantity of free oxygen molecules in water.
What does a pulse oximeter measure? 1  The oxygen saturation of haemoglobin in arterial blood-which is a measure of the average amount of oxygen bound to each haemoglobin molecule. 2  The pulse rate-in beats per minute, averaged over 5 to 20 seconds. The oxygen saturation of haemoglobin in arterial blood-which is a measure of the average amount of oxygen bound to each haemoglobin molecule. 2  The percentage saturation is given as a digital readout. 3  The pulse rate-in beats per minute, averaged over 5 to 20 seconds.