SI-3202 Liquid Turbine Flow Meter

SI-3202 Liquid Turbine Flow Meter
Liquid Turbine Flow Meter, is the turbine flow meter that suitable for liquid flow rate measurement. Like water flow, Diesel flow. Turbine flow meter is the most popular equipment to measure flow electronically. They offer a wide flow and application rangeability. Turbine Flow Meters are easy to maintain, durable and versatile.
SI-3202 Liquid Turbine Flow Meter measures the velocity of liquids in pipes,
such as hydrocarbons, chemicals, water, cryogenic liquids, Diesel and industrial liquids.

Liquid Turbine Flow Meter Specs

Brand NameDiameterAccuracyInstallationOutputTemp. rangeDelivery TimeWarrantyAfter-sales ServicePackageMOQ
Flange connection DN15-DN200;
Screw connection: DN4-DN50;
Loose flange connection: DN4-DN200
4-20mA analog output, 
RS485 (Modbus-RTU protocol), 
-20+150(OEM)1-3 Work days1 YearsVideo technical supportCarton packing; 
export wooden packing
1 Set

Flow Range

Standard flow range
Extended flow range
Conventional endurance pressure1.6MPa1.6MPa1.6MPa1.6MPa1.6MPa1.6MPa1.6MPa1.6MPa1.6MPa
SI-3202 liquid turbine flow meter is a new generation turbine flow meter.
The product possesses advantages of simple structure,
light in weight, high accuracy, good repeatability,
short response time, easy installation, etc.
It could be used widely in measurement of closed pipe system for pure liquid,
that will not react with 1Cr18Ni9Ti, 2Cr13, Al2O3 and hard alloys. 
• High accuracy; Normal type can reach ±1%R, ±0.5%R.High accuracy type can reach to ±0.25%R.
• Excellent repeatability, repeatability in a short time can reach to 0.05%~0.2%.
• Turbine flow sensor no zero drift and strong ability in anti-noise.
• High frequency signal (10Hz~1.5 KHz), strong signal resolution.
•  Range of wide, medium and large diameter up to 1:20, small diameter of 1:10.
• Compact and light structure, convenience in installation and maintenance.
• Suitable to measure in high pressure. No need to open aperture on the meter, so it is easy to make high pressure flow meter.
• Special type of sensors can be designed according to the special needs of users. Such as low temperature type, bidirectional type, well type, and special type of mixed sand etc .
• SI-3202 series Turbine Flow Meter can max bear 150℃.
MediumNon-corrosive low velocity liquid without impurity,not suitable for gas/steam
Flange standardGB/T 9119-2010, DIN, ANSI, JIS
OutputPulse, 4-20mA analog output, RS485 (Modbus-RTU protocol), HART
Diameter and installationFlange connection DN15-DN200
Screw connection: DN4-DN50
Loose flange connection: DN4-DN200
Medium temperature

Default type T1: -20℃~+80℃  (Standard)

High temp. type T2: -20℃~+120℃  (OEM)

High temp. type T3: -20℃~+150℃(OEM)

Operation conditionOperating temperature: -20℃~+60℃
 Related humidity: 5%~90%
Atmospheric pressure: 86kPa~106kPa
Ingress protectionIP65 or IP68
Explosion proofExia‖CT4 or Exd‖BT6

In addition to regular products, we support customization

DiameterDNXX       DN4~DN200mm
Converter TypeN1      24VDC,Pulse output,No display
N2      24VDC,Pulse output,No display,EX
A      24VDC,4-20mA output,No display,EX
E1      Battery power supply,No output,Digital display,EX
E2      24VDC,Pulse and 4-20mA output,RS485,Digital display,EX
E2+B      24VDC+battery power supply,Pulse and 4-20mA output,RS485,Digital display,EX
E3      24VDC,Pulse and 0-20mA output,RS485,Digital display,EX
E3+B      24VDC+battery power supply,Pulse and 0-20mA output,RS485,Digital display,EX
E+H      24VDC,4-20mA output,HART,Digital display,EX
G5      220VAC,Pulse and 4-20mA output,RS485,Digital display,EX
G6      220VAC,Pulse and 0-20mA output,RS485,Digital display,EX
Accuracy10     ±1.0%R
5     ±0.5%R
Flow RangeS    Standard Range
E    Extended Range
Body MaterialS4   SS304
S6   SS316
Explosion-Proof BT  Exd II BT6
 NA  None
ConnectionTHM External thread,Apply to DN4~DN50mm
THF Internal thread,Apply to DN4~DN50mm
WAF Flange clamp
DXX D16:DIN PN16 Flange;D25:DIN PN25 Flange
AXX A15:ANSI 150# Flange;A30:ANSI 300# Flange
JXX J10:JIS 10K Flange;J20:JIS 20K Flange


SI-3202  DN50  E2  10   S  S4  BT  D16  T2

①   ②  ③  ④  ⑤  ⑥  ⑦  

① Diameter:DN50

② E2:24VDC,Pulse and 4-20mA output,RS485,Digital display,EX

③ 10:1.0% of rate accuracy

④ S:Standard range 4-40m³/h

⑤ S4:SS304 Body Material

⑥ BT:Exd II BT6

⑦ D16:Flange DIN PN16

⑧ T2:-20~+120

SI-3202 Liquid Turbine Flow Meter order guide

Turbine flow meters measure the velocity of liquids,

gases and vapors in pipes, such as hydrocarbons,

chemicals, water, cryogenic liquids, air, and industrial gases.

SI-3202 Liquid Turbine Flow Meter is the best choice for:

-Refined oil, light crude oil, gasoline, light oil, jet fuel, light diesel oil, naphtha, ethylene, etc.

-Lubricating oil, hydraulic oil, etc.

-Water, pure water, distilled water, deionized water, desalinated water, demineralized water, etc.

-Alcohol, benzene, toluene, xylene, butadiene, carbon tetrachloride, methylamine, acrylonitrile, etc.

-Formaldehyde, citric acid, caustic soda, carbon disulfide, etc.

-Milk, coffee, etc.

-High temperature medium such as heat transfer oil and hot kerosene>Methanol/Alcohol

March 21, 2019 at 10:08 pm


Thanks for your quick responce.  This Insertion type mag flow meter really works well in our wastewater pipes.

Techincal Support

A turbine flow meter is a volume sensing device, constructed with rotor and blades. Turbine flow meters use the mechanical energy of the fluid to rotate the rotor in the flow stream. As liquid or gas passes through the turbine housing, it causes the freely suspended turbine blades to rotate. The velocity of the turbine rotor is proportional to the velocity of the fluid.
Rotor movement is often detected magnetically, where movement of the rotor generates a pulse. When the fluid moves faster, more pulses are generated. Turbine flow meter sensors detecting the pulse. Located external to the flowing stream. To avoid material of construction constraints that would result if wetted sensors were usedThe RPM of the turbine wheel is proportional to flow velocity within the tube diameter and corresponds to the volume flow over a wide range.
A flow transmitter mounted on the body of the flow meter. Transmitter processes the pulse signal to determine the flow of the fluid. Flow transmitter and sensing systems are available to sense flow in both the forward and reverse flow directions. High accuracy are available for custody transfer of hydrocarbons and natural gas.

There are two different manufacturers k:
one is k = f / Q, which is the number of vortices generated per unit flow;
the other is k = Q / f, which is the flow corresponding to each vortex.
The k value is calibrated by the factory water.
The number of vortices of the sensor measuring instrument is compared with the volume flow measured by the calibration device to obtain the k value.

The value of k is actually related to the mechanical structure inside the measuring tube of the flow meter.
Take k = f / Q as an example, the formula is as follows:

How do you calculate K factor for a turbine flow meter?

D —- Measuring tube diameter

St —- Strauhal number, constant in a certain range of Reynolds number

d —- characteristic width of vortex generator

m–the ratio of the arcuate area on both sides of the vortex generator to the cross-sectional area inside the pipe

The values of d and m are difficult to measure accurately, so it is difficult to obtain accurate k values by calculation.


Turbine Meter Advantages

Turbine Meter Disadvantages

Wide flow rangeability including low flow rates
Requires constant backpressure to prevent cavitation
Turndown ratio is up to 35:1
Accuracy adversely affected by bubbles in liquids
Good level of accuracy at an economic price
Turbine meters can be used with clean liquids and gases
Simple, durable construction
Not applicable for measuring corrosive fluids
Easy to install and maintain
Requires a
turbulent flow profile (consistent fluid velocity across the pipe diameter)
for accuracy
Flexible connection to flow instruments for flow control
Sensitive to changes in fluid viscosity
Wide variety of process connections
Require a
straight run of pipe before and after the turbine meter to allow swirl
patterns in the flow stream to dissipate
Turbine meters can operate over a wide range of
temperatures and pressures
Low pressure drop across the turbine
May not
function properly with high viscosity fluids where the flow profile is
Provides a convenient signal output
Turbine Flow Meters

Turbine type flow meter

Turbine type flow meter is one type of mechanical flow meters. Turbine flow meter use the mechanical energy of the liquid to rotate a rotor in the flow stream. Turbine flow meters measure the velocity of a variety of liquids (oil, water), gases (natural gas) and vapors. All types turbine flow meters, like: flange, sanitary flow meter, insertion, threaded connections etc .

sanitary flow meter

Sanitary Flow Meter

Sanitary Flow Meter, also called the tri-clamp flow meter. Sanitary Flow Meters have stainless steel bodies and come standard with Tri-Clover fittings. Sanitary flow meter meets the requirements of the food, and beverage company industries. Sino-Inst’s magnetic flowmeter and turbine flow meters is available in a sanitary version. And allows for use with Output Modules, Sensors and Remote Transmitters.

Wastewater flow meter

Wastewater flow meter

Wastewater Flow meters are flowmeters for water and wastewater treatment. Electromagnetic flow meters are suitable for open channel and underground industrial water pipes. Magnetic flow meters can be Remote type, compact type, insertion type. And ultrasonic flow meters are another choice, if you can not change your pipes. Both ultrasonic flow meters and magmeters are inline flow meters. Sino-Inst offers ultrasonic and magnetic flow meters, which offer the highest flow meter accuracy and reliability, as well as long-term stability and a low cost-of-ownership.

Water Flow Meter Types

Water Flow Meter Types

Water Flow Meters are flow meters measure and show the flow rate of water flow. Water flow measurement is important for inductrial applications, like the wastewater treatment. In principle, water flow meter types are: Electromagnetic (magnetic), Turbine, Ultrasonic, and DP. Coriolis and Oval Gear flow meters can also work for water flow measurement. These water flow meters, optional with digital display, battery, analog or pulse output. Material can be 316 stainless steel or special material.

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