Get in Touch

If you need any help, please feel free to contact us

If you have any further questions, please call +86-021-37566990 or fill out the inquiry form.

Get coupons

Turbine Flow Sensor-SN51

PREV: Electronic turbine flow sensor-SN51B
NEXT: Impeller flow and temperature integrated sensor SN52D

Product introduction

SN51 series turbine flow sensor is a precision flow measuring instrument. It absorbs advanced technology of domestic and foreign flow instruments and has been optimized and designed. It has a simple structure, lightweight and
It has high accuracy, good reproducibility, sensitive response, easy installation, maintenance and use, and is suitable for measuring low viscosity media such as water, diesel, gasoline, etc. Compatibility with corresponding traffic
The instrument case matching can be used to measure the flow rate and total amount of liquid. Widely used in computing and control systems in petroleum, chemical industry, metallurgy, scientific research and other fields.
Sensors are available in various forms such as ordinary type, high-precision type and wear-resistant type (cemented carbide). There are two types of amplifiers: ordinary type and explosion-proof type, and the sensor can also be calculated with on-site flow.
The meter is equipped with (powered by lithium batteries, battery replacement in 1 year).

Parameter Table Dimension Drawing Dimensions 1 (Clip-Fitting Type) Dimensions Figure 2 (Threaded Connection Type) Dimensions Figure 3 (PN16 flange connection type) Picture Curve Graph Installation Requirements For Straight Pipe Sections Selection Table

Called The Diameter DN（ mm ）	Flow Range（ m³/H ）						Nominal Pressure PN（MPa）	Maximum Pressure Loss （MPa）
	Lower Limit	Upper Limit	Lower Limit	Upper Limit	Lower Limit	Upper Limit
2					0.03	0.16	Thread pressure resistance: 6.3 Flange pressure resistance: 1.6 Please indicate the special pressure resistance	0.15
4					0.04	0.25		0.12
6					0.1	0.6		0.08
10					0.2	1.2		0.05
12					0.12	2.4		0.05
15			0.6	4	0.6	6		0.035
20					0.8	8
25			1.6	10	1	10
32					1.5	15
40	3	20	3	20	2	20		0.025
50	6	40	6	40	4	40
65					8	80
80	16	100	16	100	10	100
100	25	160	25	160	20	222
125					25	250
150	60	400	50	300	40	400
200			100	600	80	800
250			160	1000	120	1200
300			260	1600	180	1800
Note: The rightmost column of the flow range is the standard reference value, and other flow ranges are customised ranges.

Clip-Fitting Type

Flange Connection Type

Instrument Diameter （mm）	L （mm）	D （mm）	H （ mm）
			Pulse Type	Explosion-Proof Pulse Type	4-20mA Output Type	Smart Display
15	66	66	155			220
20	66	66	160			225
25	66	66	165			230
32	70	86	170			240
40	75	86	180			245
50	75	92	195			260
65	75	105	205	210	210	275
80	84	120	220	225	225	290
100	90	140	245	250	250	310
125	100	165	270	275	275	340
200	150	240	350	350	350	415

Meter Caliber mm	External Thread L mm	Internal Thread L mm	H（ mm）				G External Thread	G Internal Thread
			Pulse Type	Explosion-Proof Pulse Type	4-20mA Output Type	Intelligent Display Type
4	225	80	142	145	145	210	G1/2	G1/4
6	225	80	143	145	145	210	G1/2	G1/4
8	225	80	144	146	146	210	G1/2	G1/4
10	345	80	145	150	147	210	G1/2	G3/8
12	345	80	146	150	1448	212	G3/4	G1/2
15	75	110	147	150	150	215	G1	G1/2
20	85	115	150	155	155	220	G1	G3/4
25	100	140	155	160	160	225	G1-1/4	G1
32	120	168	175	180	180	245	G1-1/2	G1-1/4
40	140	180	180	184	180	250	G2	G1-1/2
50	150	200	185	190	190	255	G2-1/2	G2
Note: The above DN4-DN10 flow sensor includes the factory-standard straight pipe section size, DN15-DN50 Diameter flow sensor does not include straight pipe section size

Dimensions Figure 2 (Internal Thread Connection Type)

Meter Caliber mm	L mm	D mm	K mm	H（ mm）				d mm	n Number Of Holes	Standard Pressure Resistance
				Pulse Type	Explosion-Proof Pulse Type	4-20mA Output Type	Intelligent Display Type
15	75	95	65	175	180	180	245	14	4	1.6 MPa
20	85	105	75	185	190	190	255	14	4
25	100	115	85	200	195	195	260	14	4
32	120	140	100	210	215	215	275	18	4
40	140	150	110	195	220	220	285	18	4
50	150	165	125	230	235	235	295	18	4
65	175	185	145	255	260	260	325	18	8
80	200	200	160	260	265	265	330	18	8
100	220	220	180	285	285	285	350	18	8
125	250	250	210	310	315	315	380	18	8
150	300	285	240	345	345	345	410	22	8
200	360	340	295	395	400	400	465	22	12

Pulse Output Wiring Diagram

Basic Structure Diagram Of Converter

Installation Location

SN51-

025

Detailed description

SN51-

SN51 Series Turbine Flow Sensors

SN-51A

Model A (protection level: IP67) (explosion-proof level CT6)

SN-51B

Model B (Protection Level: IP67) (Explosion-proof Level CT6)

SN51-C

Model C (Protection level: IP65)

025

"Calibration option, 025 represents DN25 pipe (for special pipe diameter please consult sales engineer)"

Battery-powered on-site display, no output

Pulse signal output, no display (NPN or PNP)

Analog quantity 4-20mA output, no display

On-site display, analog quantity 4-20mA output

On-site display, analog quantity 2-10V output

On-site display, analog quantity 1-5V output

In-place display, pulse signal output (NPN or PNP)

RS485 Communication

HART protocol

Internal thread sealing connection (suitable for ≤DN32 diameter)

Flange connection (suitable for ≥DN15 diameter)

Sanitary grade clamp connection

Quick seal hose fittings

External thread sealed connection (suitable for ≤DN32)

Accuracy 1.0%

Pressure withstand: 16bar

Pressure withstand: 25bar

Pressure withstand: 40bar

Pressure withstand: 63bar

Pressure withstand: 160bar (diameter ≤DN50)

Withstand voltage: 250bar (diameter ≤DN50)

Withstand voltage: 320bar (diameter ≤DN50)

Withstand voltage: 400bar (diameter ≤DN50)

Code break converter (optional)

Smart converter (optional)

24V

220V

Battery-powered (only for selection without output)

* Please indicate the media flow direction, media type, pipe diameter and desired measurement interval value when ordering. We can help you with accurate verification when leaving the factory.
* If it is a viscous medium, please indicate the viscosity, temperature, medium type, and flow range.
* The selection table is for parameter selection only, and the corresponding encoding is factory-delivered by the parameters.

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.