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Clamp-on Ultrasonic Flowmeter – SN53F

PREV: Miniature Oval Gear Flow Sensor – SN55B

Product introduction

Principle and Features:

This product is specially designed to measure the flow of various liquids inside pipelines, enabling real-time flow monitoring during production. It outputs digital and analog signals, participating in process measurement and control.

Switchable PNP/NPN output

Flowmeter clamps onto the outside of the pipe—no need to modify the pipeline.

No professional knowledge required; installation and measurement can be done via menu navigation.

No moving parts, no pressure loss, can be installed and operated without shutting down production.

Main Industries:

Semiconductor, food, pharmaceutical, drinking water, detergents, textile dyeing, chemical products, etc.

Medium Suitability Judgment Applicable Media Applicable Pipes Panel Diagram Wiring Diagram Dimension Drawing Technical Specifications Parameter Table Model Selection Table

Fluid flows steadily inside the pipe

Pressure is maintained at 0.3 MPa

No bubbles (or cavitation) generated by flow

This product has been used successfully with many other fluids.

Mainly used for measuring and controlling water (tap water, purified water, ultrapure water). With growing applications, it is also used for various acids, alkalis, organic liquids, chemical solvents, alcohols, drinking water, etc.

Examples include:
Dilute sulfuric acid, white liquor (baijiu), hydrocarbons, ethanol, sodium chlorate solution, sodium carbonate, triethanolamine, ethylenediamine, propylene oxide, and more.

Metal Pipes: Stainless steel, carbon steel, general metal pipes
Plastic Pipes: PVDF, PVC/CPVC, PPR, PPH, PFA/PU, HDPE

Measurement Accuracy	±2.0% (0.03 m/s – 5.0 m/s)
Flow Velocity Range	0.1 m/s – 5.0 m/s
Linearity	±2.0% (0.03 m/s – 5.0 m/s)
Repeatability	0.80%
Response Time	500 ms
Menu Language	Simplified Chinese, Traditional Chinese, English
Display Units	Supports metric and imperial units: m³/h, LPM, ml/min, GPM, LPH (default: m³/h)
Displayed Data	Instantaneous flow, instantaneous velocity, net total, single total, daily max/min, daily/monthly/yearly total
Accumulator	7-digit flow accumulator
Data Retention	10 years, 64 months, 64 days
Operation Keys	4 tactile buttons
Calendar Battery	CR1220
Power Supply	24VDC @ 3W
Analog Output	4–20 mA, max load 600Ω
Communication Interface	RS485, supports Modbus RTU protocol
Alarm Output	OCT upper/lower limit alarms, pulse output (optional)
Relay Output	Relay Output
Compatible Media	Water, solutions, chemical reagents (impurities ≤4%)
Ingress Protection	IP54 / IP65
Installation Method	Integrated clamp-on type, tightened with screws via upper and lower clamp + host unit
Pipe Size	DN015–DN040
Wetted Materials	Wetted Materials
Medium Temperature	Integrated type: -10°C to 50°C
Ambient Temperature	-10°C to 50°C
Ambient Humidity	0%–95% RH, non-condensing
Viscosity Compatibility	<300 cSt (mm²/s)

Pipe Material	Pipe Nominal Inner Diameter	Clamp Suitable Outer Diameter Range (mm)	Flow Rate Range (0.03~5 m/s) (m³/h)
PVC / Stainless Steel / Carbon Steel	DN15	18~21	0.02~3
Copper
PVC / Stainless Steel / Carbon Steel	DN20	25~29	0.04~5.5
Copper
PVC / Stainless Steel / Carbon Steel	DN25	32~36	0.05~9
Copper		25~29
PVC / Stainless Steel / Carbon Steel	DN32	39~43	0.09~15
Copper		32~36
PVC / Stainless Steel / Carbon Steel	DN40	39~43	0.13~23
Copper		50~54

SN53F-						Details
SN53F-						SN53F Series Clamp-on Ultrasonic Flowmeter
	015					Pipe Diameter: DN015
	020					Pipe Diameter: DN020
	025					Pipe Diameter: DN025
	032					Pipe Diameter: DN032
	040					Pipe Diameter: DN040
		A1				Metal Pipes: A1: Stainless Steel Pipe A2: Carbon Steel Pipe A3: Copper Pipe
		B1				Plastic Pipes: B1:PVDF 、B2:PVC/CPVC、B3:PPR B4:PPH、B5:PFA/PU、B6:HDPE
			A			Pipe Wall Thickness: mm
				DC		Power Supply: 24VDC
					A	Two switch outputs
					B	Two switch outputs + analog output (4–20 mA)
					C	RS485 communication
					D	Pulse output
* Please indicate the measured medium when ordering. * This selection table is for parameter configuration only. The product will be manufactured based on selected parameter codes.

Shanghai Kayuan Electronic
Technology Co., Ltd.

Shanghai Kayuan Electronic Technology Co.,Ltd is an enterprise specializing in the production and R & D of industrial 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,PAKU INTELLIGENT EQUIPMENT(SHANGHAI)CO.,LTD a subsidiary of Kayuan 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 tea break rooms, 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.