By Pass Rotameter

At high ranges of fluid in pipe lines between 2'" and higher and up to 300 mm NB, use a by-pass rotameter. where rotameter cannot be used on a line. One orifice plate is included, and it is fixed in the pipe between two flanges. There is one additional integrated orifice with two inlet and output ports and one bypass Rotameter available to measure direct flow. We are Gujarat, India's top manufacturer, supplier, and exporter of by-pass rotameters.

The flow metre of the Inference kind is the By-Pass Rotameter. A main line orifice plate is used to generate differential pressure (DP). Branch pipes are placed across the upstream and downstream sides of the orifice plate, and fluid flows through them as a result of the differential pressure. The by-pass line has a second range orifice plate since the flow through it will be proportional to the flow through the main line.

By Pass Rotameter Suitable for high range of fluid in pipe line between 2'" or above upto 300 mm NB. Where on line rotameter cant be used. It consist of one orifice plate to be mountedin the pipe line between two flange. one more integral orifice with two inlet & outlet & one by pass Rotameter is provided to read, direct flow. we are leading manufacturer, supplier & exporter of by pass rotameter in gujarat, India.
Material of wetted part	M.S / C.S. / S.S.304 / S.S.316
Orifice range	25 to 10000M'/ HR of water
Accuracy	±2 % full scale reading
Accessories of By Pass Rotameter	• Isolation valve • High & low flow alarms • With 4-20mA two wire   transmitter • Digital Indicator, Totaliser.

Operating Principle & Standard Features

•	Differential pressure ‘P’ is created in the main Flow by providing an Orifice plate in the main pipeline.
•	Because of this ‘P’ a branch of flow moves through By-Pass line provided across the orifice plate from up stream side to down stream side of the Orifice Plate.
•	Additional Range Orifice plate is provided in the By-Pass line which is designed such that flow through range Orifice plate flows in proportion with the flow through main orifice plate.
•	Hence by measuring the flow from By Pass line we can estimate the flow from Main Pipe line.

Standard Features

•	Easy to Maintain
•	On - Line Installation
•	Most Economical,Low Cost
•	Pipe Size - 40 NB to 300 NB
•	For High Flow - 8M / Hr. To 1500M / Hr.
•	Two tone powder coated excellent finish
•	No threads, No leakage, Avoids corrossions
•	Rangeability - 1:10	2 : 10
•	Heavy duty design with maximum visibility
•	Various options for material of construction of wetted parts

Main Line NB MM	PRESSURE DROP METERS OF H2O
	1.2 2.5 3.8 5 10 1.2 2.5 3.8 5 10
LIQUID M³ / Hr							AIR NM³ / Hr
40	8	12	14	16	22		246	350	425	492	730
50	13	19	22	27	38		407	577	713	815	1206
65	19	27	34	38	54		594	849	1019	115	1699
80	29	40	52	59	83		917	1274	1580	1835	2684
100	59	86	104	120	170		1869	2616	3228	3738	5437
125	95	136	163	188	272		2888	4078	5097	5777	8496
150	136	192	227	272	385		4248	5947	7306	8496	12234
200	227	340	408	476	658		7306	10365	12744	14613	21409
250	363	522	635	749	1044		11554	16482	20390	23109	33984
300	522	749	930	1066	1498		16482	23109	28036	32284	47577