Variable Area Flowmeter

Single source of monitoring and measurement of flow

VARIABLE AREA FLOWMETER

Chemtrols presents the Variable Area Flowmeter in an all metal design based on float principle.

Models – CBGN-S (Stainless Steel) CBGN-P (PTFE)

CBGN-B-S (By Pass - SS) CBGN-H (Hastelloy)

Applications Input

OutputOperational Mode & System Design

Characteristic Values

The CBGN meter is suitable for flow measurement of liquid or Measure Variable: Volume Flow

gaseous products in pipes. It shows the current flow rate in Measuring range: The lower range value is considered 10% of volume or mass per unit in time. the upper range value

- Flow measurement Measuring range span: 10 – 100%

- Dosing Smallest measuring range: 0.5 – 5.0 l/h water

- Monitoring Largest measuring range: 8.000 – 80.000 l/h water (stainless

- Adjusting steel)

- Control

The design of the meter makes it ideal for measurement in

processes under difficult and adverse operating conditions.

The devices are available with additional electrical equipment

for process monitoring and control.

Various electrical contact makers or transmitters maybe

installed in the indicator unit.

Binary o/p: Using the segments of the slot type initiators or the

eccentric discs of the micro switches, any switching point

between 10% and 90% of the flow rate can be set.

KEI1 or KEI2 Limit Transducers

1 or 2 Limit type transducers, type SJ 3,5N, make Pepperl &

Fuchs (Special switch possible e.g.: SN version)

Safety Class: • PTB Nr. 99 ATEX 2219 X • PTB Nr. 00 ATEX 2048 X

KEM1 or KEM2 Limit Transducers

Double throw micro switches whose switching point is

activated by a cam plate.

KEM1 = 1 Double throw micro switch

KEM2 = 2 Double throw micro switches

Maximum make-break capacity:

• 230VAC50 / 60Hz 6A • 24VDC 0.5A • 110VDC 0.2A

Analogue output with ES magneto-electric transmitter

The magneto-electric transmitter is a factory calibrated to the Measuring Principle: The measuring element consists of a scale values upon shipment. The signal output is supplied sharp-edged measuring ring (1) and a conical float (2). A exclusively in a two wire connection at 4-20mA. Normally the 4-medium flows from the bottom to the top, through the 20mA signal has the HARTprotocol; alternately it can have the measuring ring, lifting the float until the buoyancy force(A) and PROFIBUS PA.the weight of the float (Gs) establish equilibrium. As the height Analogue output with the KINAX 3W2 Angle of rotation of the float varies, an annular clearance (S) proportional to the transmitterflow appears between the float and the measuring ring. The

The signal output of the angle-or-rotation transmitter is factory height of the float in the measuring ring is a measure of the

calibrated to the scale values. The signal output is 4-20mA in a flow. The permanent magnet (3) embedded in the float then

2-wire connection or alternatively 0-20mA in 4- or 3-wire transmits this measure to the scale and the optical electronic

connections.evaluators through a magnet tracking indicator system (4).

System Design: The meter consists of a cylindrical fitting pipe

with flange connections on both sides. For the measuring range

from 5-50 l/h, a measuring ring is fixed in the tube through which Measuring Accuracy

a conical float moves with vertical freedom. For small measuring oReference condition: Water at 20 C

ranges of up to 4-40 l/h, the measuring cell consists of a conical Measured Error

measuring tube with cylindrical float. The axial displacement of Liquids: ±1.6% of Upper Range Value (URV) for local display.

the float resulting from the flow is transmitted as a rotary motion Gases: ±2% of URV for local display

of the pointer in the analogue indicator unit by a built in Additional Inaccuracy for – ES: ± 0.2%

permanent magnet though a magnet tracking system.KINAX3W2: ±0.5%

Repeatability: ± 0.5% of Upper Range Value

MEASURING RANGE TABLE

Nominal Measuring Measuring Range for Measuring Range for Pressure Remarks

Size (DN) Range Water at 1000kg/m3 Air at 1.013bar (a) loss (mbar)3

20 A 0.5 - 5.0 l/h 0.015 - 0.15 m /h 40 1+23

B 1.0 - 10 l/h 0.03 -0.30 m /h 44 1+23

C 1.6 - 16 l/h 0.045 -0.48 m /h 40 1+23

D 2.5 - 25 l/h 0.075 - 0.75 m /h 40 23

E 4.0 - 40 l/h 0.13 - 1.3 m /h 40 23

F 5.0 - 50 l/h 0.15 - 1.5 m /h 403

G 7.0 - 70 l/h 0.2 - 2.1 m /h 403

H 10 - 100 l/h 0.3 - 3.0 m /h 603

I 16 - 160 l/h 0.5 - 4.6 m /h 603

J 25 - 250 l/h 0.7 - 7.0 m /h 603

K 40 - 400 l/h 1.0 - 11 m /h 703

L 60 - 600 l/h 1.7 - 17 m /h 803

M 100 - 1000 l/h 3.0 - 30 m /h 60 53

N 160 - 1600 l/h 4.0 - 40 m /h 70 53

P 250 - 2500 l/h 7.0 - 70 m /h 100 53

25 A 0.5 - 5.0 l/h 0.015 - 0.15 m /h 40 1+23

B 1.0 - 10 l/h 0.03 - 0.30 m /h 40 1+23

C 1.6 - 16 l/h 0.045 -0.48 m /h 40 1+23

D 2.5 - 25 l/h 0.075 - 0.75 m /h 40 23

E 4.0 - 40 l/h 0.13 -1.3 m /h 40 23

F 5.0 - 50 l/h 0.15 -1.5 m /h 403

G 7.0 - 70 l/h 0.2 - 2.1 m /h 403

H 10 - 100 l/h 0.3 -3.0 m /h 603

I 16 - 160 l/h 0.5 -4-6 m /h 603

J 25 - 250 l/h 0.7 - 7.0 m /h 603

K 40 - 400 l/h 1.0 -11 m /h 703

L 60 - 600 l/h 1.7 - 17 m /h 803

M 100 - 1000 l/h 3.0 - 30 m /h 603

N 160 - 1600 l/h 4.0 - 46 m /h 703

P 250 - 2500 l/h 7.0 - 70 m /h 1003

Q 400 - 4000 l/h 11 - 110 m /h 240 3+43

40 P 250 - 2500 l/h 7.0 -70 m /h 50 33

Q 400 - 4000 l/h 11 - 110 m /h 120 33

R 600 - 6000 l/h 17 - 170 m /h 180 33

50 Q 400 - 4000 l/h 11 - 110 m /h 803

R 600 - 6000 l/h 17 -170 m /h 903

S 1000 - 10000 l/h 29 - 290 m /h 1103

T 1600 - 16000 l/h 46 - 460 m /h 2303

U 2500 - 25000 l/h 70 - 700 m /h 500 3+43

80 T 1600 - 16000 l/h 46 - 460 m /h 703

U 2500 - 25000 l/h 70 - 700 m /h 1003

V 4000 - 40000 l/h 110 - 1100 m /h 3503

100 V 4000 - 40000 l/h 110 -1100 m /h 1203

W 6000 - 60000 l/h 170 - 1700 m /h 3603

X 8000 - 80000 l/h 240 - 2400 m /h 600 3+4

Process Connection

ANSI 150 RF & ANSI 300 RF

Note: In case of CBGN – P, pressure class will be ANSI 150 for all FLANGE ratings.

Influence of Ambient Temperature

Without electrical equipment and with limit transducer: no influenceo

With KINAX transmitter: ±0.2% / 10 K, reference temperature 23 Co

With ES transmitter: ±0.5% / 10 K, reference temperature 22 C

Influence of Fluid Temperature

Deviations in fluid temperature from the temperature observed during calibration can result in proportional display fault because

of the corresponding change in density. Changes in viscosity cause a non-linear display fault.

Material

Type Tube Tube Lining Flanges Flange Lining Float

CBGN - S Stainless Steel None Stainless Steel None Stainless Steel

CBGN - P Stainless Steel PTFE Stainless Steel PTFE PTFE

CBGN – H Hastelloy HC4 None Hastelloy HC4 None Hastelloy Hc4

DN 15 & 25

CBGN – H Hastelloy HC4 None Stainless Steel Hastelloy HC4 Hastelloy Hc4

(>DN 40)

Indicator unit: Aluminium Alloy with safety glass window. Stainless Steel with safety glass window (optional).

Construction Details

*265mm with the indicator pulled forward

A. Indicator Housing of Aluminium Alloy

DIMENSIONS

A 165 *

90

44

,5

97

25

0

25

0

14

9

i.d.149

DN20 26 74 ANSI 150 RF 3.0

ANSI 300 RF 3.4

DN25 32 78 ANSI 150 RF 4.2

ANSI 300 RF 4.7

DN40 46 88 ANSI 150 RF 6.0

ANSI 300 RF 6.8

DN50 70 97 ANSI 150 RF 7.5

ANSI 300 RF 8.5

DN80 102 113 ANSI 150 RF 13.0

ANSI 300 RF 14.5

DN100 125 126 ANSI 150 RF 18.0

ANSI 300 RF 20.0

Inside Diameter (i.d.) A (mm) Flanges Weight (kg)

DN20 26 100 ANSI 150 RF 3.0

ANSI 300 RF 3.4

DN25 32 103 ANSI 150 RF 4.2

ANSI 300 RF 4.7

DN40 46 110 ANSI 150 RF 6.0

ANSI 300 RF 6.8

DN50 70 122 ANSI 150 RF 7.5

ANSI 300 RF 8.5

DN80 102 138 ANSI 150 RF 13.0

ANSI 300 RF 14.5

DN100 125 151 ANSI 150 RF 18.0

ANSI 300 RF 20.0

Inside Diameter (i.d.) A (mm) Flanges Weight (kg)

*265mm with the indicator pulled forward

A. Indicator Housing of Stainless Steel

A

25

0

Ø1

96

158 *

81

68

97

25

0

i.d.

302, Plot No. 169, Ganga Plaza, Vasavinagar, Kharkhana, Opp. ICICI Bank, Secunderabad - 500 015

No.10, Aryanagar, Behind Arya Vidyapith College, PO: Gopinath Nagar, Guwahati - 781 016

Chemtrols Industries Ltd.,

Amar Hill, Saki Vihar Road, Powai, Mumbai – 400072

Email : chemtrols@chemtrols.co.in

Tel : +91-22-6715 1200 Fax : +91-22-6715 1405

Module No.7, Garment Complex, Sidco Industrial Estate, Guindy, Chennai - 600 032

Email : chemtrols@chemtrols.co.in

Tel : +91-44-43054191/2/3/4

Fax : +91-44-43054194

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Email : chemtrols@chemtrols.co.in

Tel : +91-80-26570174/0170/0173

Fax : +91-80-26641521

Mobile:

Chemtrols Vishakapatnam

D.NO.7-5-7, 2nd Floor, Near Canara Bank, Chattivanipalem, Autonagar Stop, Vishakapatnam - 530 026

Telefax: +91-891-257 5842

Pub No.: CIL/PC/Chemag300/111/2012/Ver.1.2