ROCKWIN KRAL SCREW VOLUMETER

The measuring principle of the screw-volumeter is positive displacement. The measuring chambers areformed by two spindles, rotating inside a casing. The fluid to be measured flows in axially and causes the spindles to rotate smoothly and evenly. The flow rate measured is a function of the precisely definedvolume of the measuring chambers and the number of rotations counted by an electronic pick-up.

A comprehensive range of electronic signal conditioning and readout instruments, for use in conjunctionwith screw volumeters, is available. These electronic devices include Flow Rate Monitors, Flow Totalisers,Switching devices and Signal conditioning electronics, for local and remote transmission of the output.

Accuracy

Viscosity range

Materials

CasingSpindles

Bearings

Rockwin KRAL Screw Volumeters are designed for precise and reliable flow measurement ofindustrial fluids with the highest measuring accuracy. With measuring range upto 1:70 these arecapable of handling wide range of viscosity. Rockwin Kral Screw Volumeters are self cleaning andare free of noise and pulsation. These are compact units suitable for mounting in any position. Theflowmeter is approved for custody transfer application.

APPLICATION

l

l

l

l

l

Diesel engine - FuelCombustion systems - Fuel oil, HFO, LDOTest stands - Hydraulic oil, A.T.F.,

Lubricating oilChemical Industry - Acids, Lye, PolymersFood industry - Chocolate, Honey,

Jam, Fats

PRINCIPLE OF OPERATION

ASSOCIATED ELECTRONICS

GENERAL SPECIFICATIONS

2upto 5000 mm /s

Typically ±0.15% of the actual flow

Model OMG Model OME

Continuous Casting Aluminium Steel Nitrated Steel Nitrated Ball Bearings Ball Bearings

+0,2

+0,1

0

-0,1

-0,250 100 150

5 mm2/s

40 mm2/s

150 mm2/s

1000 mm2/s

GENERAL SPECIFICATIONS

Model OME 13 OMG 20 OMG 32 OMG 52 OMG 68 OMG 100OMG 13 OMG 140

Nominal bore(mm)

Flow range(litre/min)

Temperature(deg C)

Max. operatingpressure (bar)

Weight (Kg)

15 15 20 32 40 50 100 150

0.2-10 0.2-10 0.5-30 1.5-100 5-350 10-700 25-2000 100-5000

-20..+100 -20..+200 -20..+200 -20..+200 -20..+200 -20..+200 -20..+200 -20..+200

40 250 250 250 160 100 40 40

0.6 4.6 4.1 11 18 29 70 180

ACCURACY CURVE

DIMENSIONS

Flow rate

R

LL

DD

pipe thread connection flange connection

K K D

L

Model Rinch

Lmm

Dmm

tmm

Lmm

Dmm

Kmm

tmm

Flange connection (ANSI 150#)Thread connection

OME 13 1/2 110 45x45 16 105 95 65 20

OMG 13 1/2 145 90 18 145 95 70 25.5

OMG 20 3/4 145 74 16 185 105 75 20

OMG 32 1 215 104 18 265 140 100 25

OMG 52 1½ 295 118 27.5 285 150 110 22.5

OMG 68 2 355 138 30 340 165 125 22.5

OMG 100 4 480 188 40 450 220 180 25

OMG 140 6 645 267 54 600 285 240 30

Development dictates that trom time to time the data shown above is subject to change without notice. Please obtain a quotation.

RSV-7235

Delhi : P.B. No. 13, Vasant Vihar, New Delhi -110 057, INDIATel.: 26142599, Fax : 011-26146942, E-mail : rockwin@vsnl.com

Mumbai : A/3, Jay Chambers, Nanda Patkar Road, Vite Parle(E), Mumbai - 400 057, INDIATel.: 26146274, 26175008, Fax : 022-26118131, E-mail : rockwin@bom3.vsnl.net.in

Kolkata : Oriental House, Suite GC, 6C, Elgin Road, Kolkata - 700020, INDIATel : 22809775, Fax : 22809774, E-mail : rockwinkolkatta@vsnl.net

Chennai : 85/19, Sri Rangam Avenue, Pantheon Road, Egmore, Chenai -600 008, INDIATel. : 044-28529569, Fax :044-28529176, E-mail : rockwinchennai@vsnl.net

Visit us at : http://www.rockwin.com

Works : B-24/IV, Sahibabad Industrial Area, Ghaziabad - 201 010 (U.P.) INDIA, Ph.: 2895400, 2895401 Fax : 0120-2895450