This historic book may have numerous typos and missing text.
Purchasers can usually download a free scanned copy of the original
book (without typos) from the publisher. Not indexed. Not
illustrated. 1903 edition. Excerpt: ...tank is arranged with a
swinging joint, consisting merely of a loosely fitting elbow, so
th;it it can be readily turned into the tank or away from it. After
the desired pressure and speed have been secured, the end of the
pipe is swung into the tank the instant that the pointer of the
meter is opposite some graduation mark on the dial, and the water
continues to empty into the tank while any desired number of even
cubic feet are discharged, after which the pipe is swung away from
the tank. The tests should be made by starting and stopping at the
same graduation mark on the CALIBRATION OF A WATER METER' SKETCH
SHOWING METER CONNECTIONS ETC. Stanford Engine Testa Fig. 118.
meter dial, and continued until at least 10 or 20 cubic feet are
discharged for one test. The water collected in the tank is then
weighed. The water passing the meter should always be under
pressure in order that any air in the meter may be discharged
through the vents provided for this purpose. Care should be taken
that there is no air contained in the feed water. Should the
feed-water pump draw from tt hot well, the height of the water in
the hot-well must never be as low as the suction pipe of the pump.
In case the speed of the feed pump cannot be regulated, as occurs
in some cases where it is driven directly from the engine, a
by-pass should be connected with the pipe leading from the pump, to
allow some of the water to flow back into the hot well, if the pump
lowers the water in the hot-well beyond a given mark. The meter
should be tested both before and after the engine trial, and
several tests should be made of the meter in each case in order to
obtain confirmative results. It is well lo make preliminary tests
to determine whether the meter works satisfactorily...
|Country of origin:
American Society of Engineers
||246 x 189 x 27mm (L x W x T)
||Paperback - Trade
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