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Oval Gear Flow Meter-SN5A

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Product introduction

Overview
elliptic gear flowmeter is a volumetric measuring instrument for continuous or intermittent measurement and control of liquid flow in pipeline. It has a large range, high accuracy, small pressure loss, viscosity adaptability, can measure high temperature and high viscosity liquids, convenient calibration, installation recommendations and many other advantages. It is suitable for flow measurement in petroleum, chemical industry, chemical fibre, traffic, trade, food, medicine and health and other departments.
SN5A series oval gear flowmeter is equipped with pointer and word wheel accumulation device, can directly display the liquid flow through the pipeline and instantaneous flow. In the counting mechanism attached to the sending device and the electric display instrument supporting can be achieved cumulative, quantitative and instantaneous flow of remote centralised control. Adding radiator or ellipsoidal gear can measure high temperature and high viscosity liquid.
Different liquids (acid, alkali, salt, organic solutions, etc.) flowmeter body can choose different materials.
Structure and working principle
Elliptic gear flowmeter consists of flow transmitter and counting mechanism. A heat sink is installed between the transmitter and the counting mechanism, which constitutes a high-temperature flowmeter. The transmitter consists of a measuring chamber with a pair of elliptical gear rotors and a sealing coupling, while the counting mechanism includes a deceleration mechanism, a regulating mechanism, a counter and a transmitter.
The metering chamber consists of a pair of elliptical gears and a cover plate forming a crescent-shaped cavity as the flow measurement unit. Elliptic gear by the flowmeter inlet and outlet pressure difference to promote and rotate, so that the liquid is constantly measured by the crescent-shaped cavity sent to the outlet, each turn of the flow of liquid is four times the crescent-shaped cavity, the total number of elliptical gears by the sealed coupling and the speed of rotation to the counting mechanism or transmitter, you can know the total amount of liquid in the pipeline through the total amount and the instantaneous flow rate.

Working Principle Technical Parameters Dimension Drawing Dimension Table Selection Table

1. Cast-iron, cast-steel and stainless-steel elliptical gear flows

Model

SN5A-A cast iron

SN5A-B stainless steel

SN5A-E cast steel

Nominal Pressure MPa

1.6

1.6、 2.5、4.0、 6.3

Temperature Range °C

Conventional pointer type: -20~ +80; High temperature pointer type: -20~ +200;
Conventional LCD type: -20~ +60; High temperature LCD type: -20~ +150;

Accuracy Class

0.5%

Bore (mm)

Viscosity:0.6-2mPa.s

Viscosity:2-200mPa.s

0.2-0.4 m³ /h

0.08—0.4 m³ /h

0.6-1.5 m³ /h

0.3—1.5 m³ /h

0.8—3 m³ /h

0.6—3 m³ /h

1.2—6 m³ /h

0.8—6 m³ /h

5—15 m³ /h

3—15 m³ /h

6—24 m³ /h

4—24 m³ /h

10—40 m³ /h

8—40 m³ /h

80 (light)

10—40 m³ /h

8—40 m³ /h

80 (heavy)

15—60 m³ /h

10—60 m³ /h

100

30—100 m³ /h

15—100 m³ /h

150

45—190 m³ /h

34—190 m³ /h

200

68—340 m³ /h

56—340 m³ /h

2. Highly viscous elliptical gear flow meters

Model

SN5A-NA cast iron high viscosity type

SN5A-NE cast steel high viscosity type

SN5A-NB Stainless steel high viscosity type

Nominal Pressure MPa

1.6

1.6、2.5、4.0、6.3

Temperature Range °C

Conventional pointer type: -20~ +80; High temperature pointer type: -20~ +200;
Conventional LCD type: -20~ +60; High temperature LCD type: -20~ +150;

Accuracy Class

0.5%

Flow range m³/h

Bore (mm)

Viscosity:200—1000mPa.s

Viscosity:1000-2000mPa.s

0.04—0.3 m³ /h

0.03-0.2 m³ /h

0.2—1.0 m³ /h

0.1-0.7 m³ /h

0.4—2.1 m³ /h

0.25-1.5 m³ /h

0.6-4.2 m³ /h

0.6-3 m³ /h

2.1—10.5 m³ /h

1.0-7.5 m3 /h

2.4-16.8 m³ /h

2-12 m³ /h

6-28 m³ /h

4-20 m³ /h

80 (light)

6-28 m³ /h

4-20 m³ /h

80 (heavy)

8-42 m³ /h

6-30 m³ /h

100

10-70 m³ /h

10-50 m³ /h

150

27-133 m³ /h

19-95 m³ /h

200

48-238 m³ /h

34-170 m³ /h

3. High-precision elliptical gear flowmeter

Model

SN5A-A cast iron type

SN5A-B stainless steel type

SN5A-E cast steel type

Nominal Pressure MPa

1.6

1.6、 2.5、4.0、 6.3

Temperature Range °C

Conventional Pointer: -20 ~ +80; High Temperature Pointer: -20 ~ +200;
Conventional LCD: -20 ~ +60; High Temperature LCD: -20 ~ +150;

Accuracy Class

0.2%

Flow range m³/h

Bore (mm)

0.6—2 mPa.s

2—200 mPa.s

0.2—0.4 m³ /h

0.5—1.5 m³ /h

1.5—3 m³ /h

1—3 m³ /h

3—6 m³ /h

1.2—6 m³ /h

8—15 m³ /h

5—15 m³ /h

12—24 m³ /h

8—24 m³ /h

20—40 m³ /h

10—40 m³ /h

80 (light)

20—40 m³ /h

10—40 m³ /h

80 (heavy)

30—60 m³ /h

15—60 m³ /h

100

40—100 m³ /h

20—100 m³ /h

150

90—190 m³ /h

56—190 m³ /h

200

170—340 m³ /h

68—340 m³ /h

Model: SN5A-A, SN5A-NA

DN （mm）	L （mm）	H （mm）	B （mm）	C （mm）	I （mm）	D （mm）	D1 （mm）	N	Ф（ mm）
10	150	100	210	120	45	90	60	4	14
15	170	118	226	136	48	95	65	4	14
20	200	150	238	148	53	105	75	4	14
25	260	180	246	156	60	115	85	4	14
40	245	180	271	181	77	145	110	4	18
50 (light)	290	218	310	220	80	160	125	4	18
50(heavy)	340	250	372	230	88	160	125	4	18
65	325	245	320	220	90	180	145	4	18
80 (light)	325	245	320	220	90	195	160	8	18
80(heavy)	420	325	433	253	118	195	160	8	18
100	515	418	458	278	131	215	180	8	18
150	540	515	557	377	210	280	240	8	23
200	650	650	624	444	247	335	295	12	23

Model: SN5A-E, SN5A-NE, (same shape as above)

DN （ mm ）	L （ mm ）	H （ mm ）	B （ mm ）	C （ mm ）	I （ mm ）	D （ mm ）	D1 （ mm ）	N	Ф （ mm ）
10	150	100	212	120	45	90	60	4	14
15	200	138	232	142	53	95	65	4	14
20	250	164	250	150	63	105	75	4	14
25	300	202	252	162	68	115	85	4	14
40	300	202	293	203	83	150	110	4	18
50 (light)	320	220	325	235	85	160	125	4	18
50(heavy)	384	262	394	394	88	160	125	4	18
65	350	260	365	275	100	145	145	4	18
80 (light)	350	260	365	275	100	200	160	8	18
80(heavy)	450	337	452	272	118	200	160	8	18
100	555	442	478	298	131	220	180	8	18
150	540	510	557	377	210	285	240	8	23
200	650	650	624	436	247	340	295	12	23

SN5A-B type stainless steel oval gear flowmeter external dimensions (unit: mm)

DN （mm）	L （mm）	H （mm）	B （mm）	C （mm）	I （mm）	D （mm）	D1 （mm）	N	Ф（ mm）
10	150	100	212	120	45	90	60	4	14
15	200	120	226	132	48	95	65	4	14
20	230	150	238	148	58	105	75	4	14
25	260	180	246	156	64	115	85	4	14
40	265	180	271	181	77	150	110	4	18
50	265	180	290	200	92	165	125	4	18
65	365	260	400	310	125	180	145	4	18
80 (light)	350	260	365	275	125	200	160	8	18
80(heavy)	420	325	443	263	118	200	160	8	18
100	515	418	468	288	131	220	180	8	18

Type Code

earmark

Material Marking

a thoroughfare

strains

calculators

sender

Description

SN5A

Elliptic Gear Flow Meters

High temperature type

Clamped type

High viscosity type

Cast iron type

Cast steel type

304 Stainless steel type

316 Stainless steel type

Nominal diameter: DN =10mm

Nominal diameter: DN =40mm

200

Nominal diameter: DN =200mm

Nominal pressure（1.0Mpa）

Nominal pressure（1.6Mpa）

Nominal pressure（2.5Mpa）

Nominal pressure（4.0Mpa）

Nominal pressure（6.3Mpa）

A/A1

Mechanical pointer display below DN (light duty): A1
available with transmitter

Mechanical pointer display above DN50 (heavy duty): available with transmitter

A5/A6

A5 single pointer sub-wheel display , A6 pointer return to zero,
both available with transmitter

dual handle return to zero

Output signals only (pulses, 4-20mA)

ELZ
（BELZ）

Liquid crystal display (-1 output pulses; -2 outputs
4-20mA; -3 outputs RS485); BELZ is
Flame-proof LCD

GF-I

3-wire pulse (clockwise)

GF-II

3-wire pulse (counterclockwise)

4-20mA analogue (-1 2-wire; -2 3-wire)

Shanghai Kayuan Electronic
Technology Co., Ltd.

Shanghai Kayuan Electronic Technology Co., Ltd is an enterprise specializing in the production and R&D of industrial fluid sensors and controllers. Its main products include switches and sensors for flow, pressure, temperature, and liquid level. In 2008, our assembly plant was established in Shanghai, China, to produce the PAKU series of products. We adopt advanced technology and manufacturing processes across the board. With our professional design and production technology, comprehensive product lines, excellent quality, and sales network services, we can not only provide users with timely and professional technical support but also offer high - quality one - stop services. The company has set up various departments such as the purchasing department, R & D department, quality management department, finance department, sales department, after - sales department, general office, laboratory, archive room, calibration workshop, production workshop, inspection area, storage area, shipping area, and a tea break room, aiming to provide products of excellent quality and sincere services. We adhere to the customer - centric concept of creating value for customers. According to the industry needs of customers, we continuously update technology and optimize services, aiming to become a leader in the field of process automation. PAKU products are now widely used in different industries, including automation complete sets of equipment, petroleum equipment, chemical equipment, power equipment, welding equipment, steel equipment, metallurgical equipment, automobiles, and water treatment. We have served many customers at home and abroad, and our products are sold to countries such as Canada, the United States, Brazil, Indonesia, Vietnam, Thailand, and Russia. In the increasingly competitive global market in the future, PAKU will, as always, serve a wide range of domestic and foreign customers with excellent quality, reasonable and competitive prices, on - time delivery, and perfect after - sales service. We welcome extensive cooperation with OEM and ODM customers.