METAL TUBE ROTAMETER OPERATING PRINCIPLE Metal Tube Rotameter is basically a variable area flowmeter. The diffrential pressure across the annulus area is constant and the Flowrate is measured as a function of the position of annulus area created by float position. The position of the float is sensed by a magnet and indicated On the dial in terms of flow rate. STANDARD FEATURES : Float Does Not Project Out Of The Body   Various Material Of Construction Two Tone Powder Coated Excellent Finish   Accuracy : +/- 2% Of Full Scale Heavy Duty Design With Maximum Visibility   Line Size From 15 NB To 100 NB Single Piece ( Jointless ) PTFE / PP Claded Body   Suitable For In-Line Installation Flow Range Between 25 To 40000 LPH   Measuring Span - 1:10 No Threads In Body, Avoids Corrosion   Magnet :- Alnico Face To Face Distance : 250 mm.   Easy To Maintain Angular Scale

With FLOW TRANSMITTER - ( MOUNTED ON METAL TUBE ROTAMETAR ) TRANSDUCER ASSEMBLY Torque free potentiometer 120° angle to resistance conversion Lpt = loop powered transmitter Accuracy :- +,- 0.5% 2 wire TRANSDUCER Certification :- intrinsically safe For group - 2c Area class :- zone 2, group 2b/2c Supply :- 12-24 VDC intrinsically safe Output :- 4-20 mA Enclosure :- Weather proof/ flameproof WITH  FLOW SWITCH ( CONSISTS - SLOT SWITCH ( NAMUR ) + CONTROL UNIT. ) SLOT SWITCH (NAMUR) model no SJ5 - N Mounting Mounting on Magnetic Rotameter ( Factory Mounted ) Slot distance 5mm Supply voltage 8 vdc ( through isoiation amplifier ) Out put Namur 2 wire. Switch setting At any point over the range CONTROL UNIT FOR ABOVE SWITCH 1. Model no WE77-EX 1/2 for namur switches 2. Type Switching amplifier for namur switch 3. Mounting Din rail 4. Input 110/230v ac ( -15% + 10% ) 5. Out put 1 c/o relay contact out put @2 a. 6. Input pulse By an namur proximity switch NB Float No. With PTFE Float LPH With SS 316 Float LPH Max. Pressure Drop in mmwc Test Pressure kg/cm² 15 TN 1 - 2.5-25 1000 20 TN 2 2.5-25 4-40 TN 3 4-40 6.5-65 TN 4 6.5-65 10-100 TN 5 10-100 16-160 TN 6 16-160 25-250 TN 7 25-250 40-400 TN 8 40-400 63-630 25 TN 9 63-630 100-1000 1000 20 TN 10 100-1000 160-1600 TN 11 160-1600 250-2500 TN 12 250-2500 400-4000 50 TN 13 400-4000 630-6300 1200 20 TN 14 630-6300 1000-10000 TN 15 1000-10000 1600-16000 80 TN 16 1600-16000 2500-25000 1500 20 TN 17 2500-25000 4000-40000 100 TN 18 4000-40000 6300-63000 1500 20 PTFE/PP - single pc ( no joint )   clading 100% spark proof