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 |
| 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.
| Model | Pipe measured inner diameter mm | Insertion rod length mm | Flow range m3/h corresponding to the nominal diameter DN | ||
| 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 | ||
| 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 | ||
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 |
| /EX | Explosion-proof grade dⅡBT4 | |
| Temperature requirement | /NE | Normal temperature |
| /HE | 120℃≥high temperature≥150℃ | |
| other request | /□ | Indicate when ordering |
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.
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, 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.
