3.7 Water Meter
water meter is a very commonly used device due to it simplicity, reliability and indicated as water through the will wheel to and with gear of can be as l or lower. Flow rate is obtained by timing the flow volume with a stop watch.
3.8 Measuring Tank Measuring Tank is considered to be the most reliable means of measuring flow rate by using a stop watch. The dimensions must be made very accurate and the tank should be calibrated against a standard device such as a graduated cylinder.
3.9 When several devices are available for using in determining the flow rate, the Priority of Measuring Device most reliable choice should be
1. Measuring tank
2, Water meter
3. Flow meter