What should the coefficient of discharge be on a venturi meter?
A coefficient of discharge is therefore introduced, which usually lies between 0.96 to 0.99. In an actual meter it is not be practical for the tubes to be taken straight up as shown, since the pressures would require the use of long tubes.
How big are the threads on a 3 / 4 water meter?
The standard 3/4″ water meter has a lay length of 9″ from then ends of the threaded spuds. It has a 3/4″ measuring chamber capacity. The threads are 3/4″. AWWA meter threads, the same size as for a 5/8″ x 3/4″ meter.
What should the pressure be at the entrance to the meter?
The pressure at the entrance to the meter is gauge and it is undesirable that the pressure should at any point, fall below absolute. Assuming that for the meter is 0.96, find the maximum flowfor which it may be used. Take the specific weight of the liquid as and atmospheric pressure
Can a 1 ” meter be replaced with a 3 / 4 meter?
It is commonly used to downsize where a 1″ meter needs to be replaced with a 3/4″ meter without changing meter couplings. However, the lay length is 9″, the same as a standard 3/4″ meter, therefore a 1-1/2″ long adapter needs to be added for a standard 1″ meter setter. This meter is fairly rare. These will use 1″ meter couplings and gaskets.
How often is discharge measured at a streamgage?
The USGS makes discharge measurements at most streamgages every 6 to 8 weeks, ensuring that the range of stage and flows at the streamgage are measured regularly. Special effort is made to measure extremely high and low stages and flows because these measurements occur less frequently.
How is the total discharge of a current meter calculated?
The total discharge is then computed by summing the discharge of each subsection. Numerous types of equipment and methods are used by USGS personnel to make current-meter measurements because of the wide range of stream conditions throughout the United States.
How to convert discharge M3 / s to mm of discharge?
Further, once either rainfall or discharge are expressed correctly in mm (time-1), then the catchment area looses its meaning (i.e. it is valid for any catchment area)…. Hope it helps. Regards. How to convert discharge m3/s to mm of discharge ?
Where are the insertion and retrieval stations on a force main?
Normally, force main cleaning includes running a manufactured “pigging” device through the line and long force mains are typically equipped with “pig” insertion and retrieval stations. In most cases, insertion facilities are located within the lift station and the pig removal station is at the discharge point of the force main.
