Home > Turbine Flow Meters > SI-3208 Insertion Turbine Fow Meter

SI-3208 Insertion Turbine Fow Meter

Insertion turbine flow meters are devices that combine a sensor and a display instrument. They come in two structures: with and without a shut-off valve. They are widely used for measuring the flow rate and total volume of liquids such as raw water, circulating water, and purified water in large-diameter pipelines. Based on the sensor type, insertion turbine flow meters are divided into tangential and axial sensors.

They are suitable for measuring media such as water, oil, and chemical liquids in large-diameter pipes (DN80 and above). They offer advantages such as easy installation, low maintenance costs, and low pressure loss. They are particularly suitable for installation in situations where production cannot be stopped.

Diameter	DN80～DN3000mm
Accuracy	0.5% to 2.0% of reading
Temp. range	-20～+150℃
Pressure	1.6 MPa
Flow rate	0.5～6m/s
Straight pipe required	Up stream≥5DN, down stream≥3DN

RFQ

Features

No need to shut down the pipeline; installation is performed by drilling under pressure, suitable for large-diameter pipes ranging from DN80 to DN3000;
High resistance to electromagnetic interference and vibration;
The measurement coefficient remains unchanged after replacing the impeller and bearings;
Wide flow range with a low lower flow limit;
Low measurement error for the total flow of the complete flowmeter system;
Virtually no pressure loss, saving energy and electricity;
Sensors can be installed outdoors, and the entire sensor assembly can be used in submerged conditions for extended periods;
Sensors equipped with shut-off valves do not require disconnection during installation or removal;
Suitable for horizontal, vertical, and inclined pipelines;
Low costs for purchasing, installing, and maintaining the entire flowmeter system.

Specifications

Parameters	Technical Specifications
Measuring Medium	Conductive/Non-conductive liquids (water, oil, etc.)
Applicable Pipe Diameter	DN80~DN3000
Span Ratio	10:1
Medium Temperature	-20℃~+80℃ (120℃ for high-temperature type)
Operating Pressure	≤1.6MPa
Flow Rate Range	0.5~10m/s
Power Supply	24VDC/220VAC
Probe Material	304/316 stainless steel (optional)

Instrument specification	Tangential insert LWCQ	Axial insertion LWCB
Disassembly method	Disassembly and assembly after disconnection	No need to cut off the flow, you can disassemble after closing the ball valve
Model	A	B
Accuracy	±2.5%	±2.5%
Display	Optional	Optional
Output	Optional: Pulse or 4-20mA	Optional: Pulse or 4-20mA
Communication Interface	Optional RS485	Optional RS485
Power supply	+24VDC±15%	+24VDC±15%
Explosion-proof grade	Optional ExdIIBT6 OR ExiaIICT4	Optional ExdIIBT6 OR ExiaIICT4
Protection level	IP65	IP65
Machine power consumption	＜1W	＜1W
Instrument material	304SS	304SS
Nominal pressure	1.0MPa	1.0MPa
temperature range	-20℃～120℃	-20℃～120℃
Ambient temperature	-20℃～70℃	-20℃～70℃

For the length of the straight pipe, the length of the straight pipe upstream of the sensor should be no less than 20DN, and the length of the downstream straight pipe should not be less than 7DN to ensure measurement accuracy.

If the length of the straight pipe section does not meet this requirement, the on-site calibration of the meter factor K may be used after on-site calibration with on-site calibration conditions.

Insertion Turbine Meter Measuring Range:

Model	Pipe measured inner diameter mm	Insertion rod length mm	Flow range m3/h corresponding to the nominal diameter DN
Model	Pipe measured inner diameter mm	Insertion rod length mm	Full flow range	Accuracy of ±2.5% flow range	Accuracy is ±5% flow range
LWCQ-100	100		6-150	10-150	<10-6
LWCQ-150	150		13-200	20-200	<20-13
LWCQ-200	200		23-300	40-300	<40-23
LWCQ≤400	100	906	6-150	10-150	<10-6
	150		13-200	20-200	<20-13
	200		23-300	40-300	<40-23
	250		36-450	62-450	<62-36
	300		52-650	90-650	<90-52
	350		70-900	120-900	<120-70
	400		92-1100	160-1100	<160-92
LWCQ≤800	500	1106	150-1800	250-1800	<250-150
	600		220-2500	360-2500	<360-220
	700		280-3500	450-3500	<450-280
	800		380-4500	640-4500	<640-380
LWCQ>800	900	1306	460-5800	800-5800	<800-460
	1000		600-7000	990-7000	<990-600
	1100		700-8500	1200-8500	<1200-700
Model	Pipe measured inner diameter mm	Insertion rod length mm	Flow range m3/h corresponding to the nominal diameter DN
Model	Pipe measured inner diameter mm	Insertion rod length mm	Full flow range	Accuracy of ±2.5% flow range	Accuracy is ±5% flow range
LWCB-100	100		3-150	5-150	<5-3
LWCB-150	150		7-200	10-200	<10-7
LWCB-200	200		12-300	20-300	<20-12
LWCB≤400	100	900	3-150	5-150	<5-3
	150		7-200	10-200	<10-7
	200		12-300	20-300	<20-12
	250		18-450	31-450	<31-18
	300		26-650	45-650	<45-26
	350		35-900	60-900	<60-35
	400		46-1100	80-1100	<80-46
LWCB≤800	500	1100	75-1800	125-1800	<125-75
	600		110-2500	180-2500	<180-110
	700		140-3500	225-3500	<225-140
	800		190-4500	320-4500	<320-190
LWCB>800	900	1300	230-5800	400-5800	<400-230
	1000		300-7000	495-7000	<495-300
	1100		350-8500	600-8500	<600-350

Order Guide

In addition to regular products, we support customization

Model SI-3208-	Code	description
LWC		Insertion turbine flow sensor
	B	Ball valve plug-in type (axial)
	Q	Simple plug-in (tangential)
	Y	Liquid pipeline
Nominal diameter	-2	2mm（Pipe thread G3/8″）
	-4	4mm（Pipe thread G1/2″）
	-6	6mm（Pipe thread G1/2″）
	-10	10mm（Pipe thread G1/2″）
	-15	15mm（Pipe thread G1″）
	-25	25mm（Pipe thread G11/4″）
	-40	40mm（Flange type）
	-50	50mm（Flange type）
	-80	80mm（Flange type）
	-100	100mm（Flange type）
	-150	150mm（Flange type）
	-200	200mm（Flange or plug-in）
	-250	250mm（Flange or plug-in）
	-300	300mm（Flange or plug-in）
Accuracy level	A	Accuracy 2.5％
	B	Accuracy 1.0％
	C	Accuracy 0.5％
Signal output	M	Integrated LCD display with 4~20mA current output
	J	Supporting flow totalizer split display
	S	The matching flow totalizer displays and outputs 4~20mA separately.
	I	4~20mACurrent output
	T	Integrated liquid crystal display
	P	Pulse output
Nominal pressure	C1	PN1.61111MPa
	C2	PN2.5111MPa
	C3	PN4.0111MPa
	C4	PN6.3111MPa
	C5	PN16MPa
	C6	PN25MPa
	C7	PN40MPa
Explosion protection requirements	/NE	Not explosion-proof
Explosion protection requirements	/EX	Explosion-proof grade dⅡBT4
Temperature requirement	/NE	Normal temperature
Temperature requirement	/HE	120℃≥high temperature≥150℃
other request	/□	Indicate when ordering

Insertion Type Turbine Fow Meter with Ball Valve

Applications

Insertion Type Turbine Fow Meters are classified into LWCB/Q tangential sensors and LWCB/Q axial sensors, depending on the sensor type. The Insertion Type Turbine Fow Meter sensor (referred to as the sensor) is matched with the display instrument to form a plug-in turbine flowmeter, which can be widely used for measuring the flow rate and total amount of liquid water, such as large-diameter pipeline source water, circulating water, and purified water.

Insertion Type Turbine Fow Meters are widely used in the measurement of liquid media, for large and medium-diameter pipes in industrial sectors,such as tap water, petroleum, chemical, metallurgy, power plants, textiles, paper, and water supply and drainage, and are also commonly used in other calibers.

Techincal Support

Ultrasonic Open-Channel Flow Meter

The CS-3300 series Ultrasonic Open-Channel Flow Meter is used together with a measuring weir or flume to measure the flow of water in an open channel. It is mainly used for sewage-treatment plants, the sewage-discharge outlets of enterprises and institutions,…

Open Channel Flow Meters

What is an open channel flow meter? Open channel flow meters are primarily used to measure liquid flow rates in open channels. Common applications include agricultural irrigation, municipal sewers, rivers, drainage channels, and wastewater treatment plants. These meters directly measure…

Radar Flow Meter

The radar flow meter is a compact, non-contact, online monitoring device designed for applications such as open channels and natural rivers. It operates based on the Doppler effect: electromagnetic waves are transmitted toward the water surface and scatter upon contact…

Ultrasonic Doppler Flow Meter

This Doppler ultrasonic flow meter utilizes the ultrasonic Doppler principle to measure flow velocity and flow rate in open channels. A submersible ultrasonic sensor is installed at the bottom of the channel; the measurement point is located in front of…

CAN Bus Pressure Sensor/Transducer

The JPT201 CAN-bus output piezoresistive pressure transmitter features adjustable zero-point and full-scale output. It utilizes a highly stable and reliable pressure sensor combined with high-performance, application-specific transmitter circuitry, ensuring overall stability and reliability. It is widely used for fluid pressure…

LD-S Electromagnetic Flow Meter for Pure Water & Low-Conductivity Liquid (≥1 µS/cm)

LD-S Electromagnetic Flow Meter is built for the job standard magmeters struggle with — accurately measuring pure water, RO water and other low-conductivity liquids, reliably down to ≥1 µS/cm. It integrates the flow sensor, a PT100 temperature sensor, a polysilicon…

Insertion-type turbine flow meters are in-line flow measurement instruments that detect fluid velocity and calculate flow rate by inserting a sensor probe into the pipe. Sino-Inst’s Insertion-type Turbine Flow Meters are suitable for measuring media such as water, oil, and chemical liquids in large-diameter pipes (DN80 and above). They offer advantages such as easy installation, low maintenance costs, and low pressure loss, making them particularly suitable for applications where installation cannot be delayed.

Sino-Inst has many years of experience in manufacturing turbine flow meters and supports customized parameters, including cryogenic, high-temperature, high-pressure, and small-diameter models. Please feel free to contact our sales engineers!

Zhang Wei

Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.

Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.

Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.