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Intelligent vortex flow sensor-SN53C

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Product introduction

Principle and Features:

The SN53C series intelligent vortex flow and temperature sensor is based on the Kármán vortex street principle. The Kármán vortex street is a phenomenon observed and studied by Hungarian-American scientist von Kármán in 1911: when a fluid flows past a non-streamlined object, pairs of alternating vortices with opposite rotation directions form on both sides of the wake behind the object. These vortices are periodic and alternate, and their frequency is proportional to the fluid velocity. This is the Kármán vortex street phenomenon, and the specific relationship is Sr = f·d / V.

The vortex flowmeter utilizes this principle to determine the fluid velocity or flow rate by measuring the shedding frequency of the vortices. It features a compact size and easy configuration. With a built-in intelligent circuit, it allows free setting of upper and lower flow alarms, supports remote monitoring of real-time flow, and allows all parameters to be set on site.

It also uses a high-precision sensor for temperature measurement. The signal is processed by a rear circuit and converted into a standard industrial electrical signal for output and display. The upper and lower temperature alarms can be freely set, remote monitoring of real-time temperature is supported, and all parameters can be set on site.

Technical Specifications Dimension Drawing Wiring Diagram (5-core) Wiring Diagram (8-core) Selection Table

Applicable Medium		Liquid (viscosity below 3mPa·s [3cP])
Flow Range		0.5–4 L/min
Medium Temperature		0–90℃ (non-freezing and non-condensing)
Display Units		Instantaneous Flow: L/min Total Flow: L/min
Accuracy		Display: ±5% Analog Output: ±3%
Repeatability		±1%
Pressure Resistance		15 bar
Pressure Loss		Less than 45 KPa at maximum flow
Switch Output	Output	2 PNP or NPN outputs
	Maximum Load Current	80 mA
	Power Supply Voltage	DC 12–24V ±10%
	Switch Output	0.5s / 1s / 2s
	Output Protection	Short-circuit protection
	Flow	Hysteresis mode, upper/lower limit comparison mode, total output mode, total pulse output mode selectable
	Temperature	Hysteresis mode, upper/lower limit comparison mode selectable
Voltage Output / Current Output	Voltage Output	Voltage Output: 15V Output Impedance: 1kΩ
Voltage Output / Current Output	Current Output	Current Output: 420mA Maximum Load Impedance: 300Ω at DC12V, 600Ω at DC24V

Pin	Cable Color	Signal
1	Brown	Power Supply
2	White	Switch 2
3	Blue	GND
4	Black	Switch 1
5	Grey	mA / Pulse P

Pin	Cable Color	Signal
1	White	Flow mA
2	Brown	Power Supply +
3	Green	Temperature mA
4	Yellow	T1 Temp Switch
5	Grey
6	Pink
7	Blue	Power Supply −
8	Red	L1 Switch

SN53C-	A	P	A	B	T	Description
SN53C-						SN53C Series Intelligent Vortex Sensor
	A					Model A: Stainless steel with display
	A1					Model A1: Stainless steel without display (no switching output function)
		P				PNP output (only for models with display)
		N				NPN output (only for models with display)
			A			Flow Range: 0.5–4 L/min Thread: G3/8 internal thread
			A1			Flow Range: 0.5–4 L/min Thread: RC3/8 internal thread
			B			Flow Range: 2–16 L/min Thread: G1/2 internal thread
			B1			Flow Range: 2–16 L/min Thread: RC1/2 internal thread
			C			Flow Range: 5–40 L/min Thread: G1/2 internal thread
			C1			Flow Range: 5–40 L/min Thread: RC1/2 internal thread
			D			Flow Range: 10–100 L/min Thread: G1 internal thread
			D1			Flow Range: 10–100 L/min Thread: RC1 internal thread
			F			Flow Range: 10–100 L/min Thread: G3/4 internal thread
			F1			Flow Range: 10–100 L/min Thread: RC3/4 internal thread
			G			Flow Range: 20–200 L/min Thread: G1 internal thread
			G1			Flow Range: 20–200 L/min Thread: RC1 internal thread
Available for models without display				A		1 analog 4–20 mA output (flow)
				B		1 analog 1–5 V output (flow)
				C		RS485 communication (flow)
				S		Flow and temperature: one 4–20 mA + one RS485 output
Not available for models without display				D		2 analog 4–20 mA outputs (temperature and flow)
				E		2 analog 1–5 V outputs (temperature and flow)
				E1		Switching Output: 2 flow switch outputs Analog Output: 1 flow 4–20 mA output
				E2		Switching Output: 2 flow switch outputs Analog Output: 1 flow 1–5 V output
				F1		Switching Output: 1 temperature + 1 flow switch output Analog Output: 1 flow 4–20 mA output
				F2		Switching Output: 1 temperature + 1 flow switch output Analog Output: 1 flow 1–5 V output
				F3		Switching Output: 1 temperature + 1 flow switch output Analog Output: 1 temperature 4–20 mA output
				F4		Switching Output: 1 temperature + 1 flow switch output Analog Output: 1 temperature 1–5 V output
				G1		Switching Output: 1 temperature + 1 flow switch output Analog Output: 1 temperature and 1 flow 4–20 mA output
				G2		Switching Output: 1 temperature + 1 flow switch output Analog Output: 1 temperature and 1 flow 1–5 V output
				R1		Switching Output: 2 flow switch outputs + RS485 communication
				R2		Switching Output: 2 temperature switch outputs + RS485 communication
				R3		Switching Output: 1 temperature + 1 flow switch output + RS485 communication
Not available without temperature function					T	Default Temperature Range: 0–100℃
					T…	Custom temperature range available

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.