SI-3303 Steam Vortex Flow Meter

SI-3303 digital steam vortex flow meter is a flow meter operating with Karman Vortex principle for flow rate of steams (saturated steam, superheated steam, etc.). It could be used in automatic control system as flow transmitter.
SI-3303 steam flow meter is also with unique sensor encapsulation and protection technology to ensure service life of the sensor.
Accuracy0.5% to 2.0% of reading
Temp. range-20~+150℃
Pressure1.6 MPa
Flow rate0.5~6m/s
Straight pipe requiredUp stream≥5DN, down stream≥3DN
  • Without movable parts and adopt simple structure, easy to install and maintain.
  • The product is with stable performance and no zero drifting, offering pipe and insertion sensor type options.
  • Wide measurement range, the highest range ratio could reach to 20:1
  • Low pressure loss and consumption.
  • Assemble with anti-interference circuit and anti-vibration sensors, which could ensure anti-vibration performance of the product.


MediumSaturated steam, superheated steam, etc.
AccuracyPipe type: Class 1.0
Insertion type: Class 2.5
Medium temperature-40℃~+400℃
Nominal pressure≤1.6Mpa (offer ≤2.5Mpa and ≤4.0Mpa customization)
Flow rate5-60m/s
OutputVoltage pulse, 4-20mA output, HART, Modbus, RS485, RS232 options.
InstallationFlange, clamp flange, insertion, threat, clamp connection
3.6V lithium battery (on site display)
85~265VAC (Remote display)
Operating conditionTemperature: -25℃~60℃
Humidity: 5%~90%
Housing material1Cr18Ni9Ti

In addition to regular products, we support customization

SI-3303-           Note
Nominal diameterDNXX          DN15~DN1800 (mm)
StructureF         Remote type with display
Y         Compact type with display
AccuracyA        Pipe type: Class 1.0
B        Insertion type: Class 2.5
Nominal pressure16       1.6Mpa
XX       Customization
MediumS      saturated steam
O      superheated steam
The temp. of mediumM     <250℃
H     >250℃
Other functionP    With pressure compensation
T    With temperature compensation
PT    With pressure and temperature compensation
Power supply1   12~28VDC
2   3.6V lithium battery (on site display)
3   85~265VAC (Remote display)
Output signalA  4-20mA
M  Voltage pulse
R1  RS232
R2  RS485
Installation1 Flange
2 Clamp flange
3 Insertion
4 Thread
5 Clamp
Explosion proofANo explosion proof
BIntrinsic explosion proof
GFlame proof


Saturated steam, superheated steam, etc.


May 11, 2019 at 09:08 pm


The Temperature and pressure compensation really works well.

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