Portable ultrasonic flow meter

The SI-3000H Portable Ultrasonic Flowmeter is a widely used time difference ultrasonic flowmeter,

for on-line calibration and inspection of liquid flow in various industrial sites.

With non-contact measurement, high measurement accuracy,

large measurement range, battery power, easy operation,

easy to carry, built-in data logger and so on.

Its compact, lightweight, rechargeable battery and universal power supply design,

allows you to measure your pipe anytime, anywhere,

and is truly a portable ultrasonic flow meter.

Types of flow meter

Features Of Portable ultrasonic flowmeter:

Portable ultrasonic flowmeter
  • Slide rail type magnetic sensor, simple and convenient;
  • Small, lightweight and easy to use;
  • Portable dual mode flowmeter both TRANSIT TIME and DOPPLER mode without changing sensors;
  • Positive and negative flow measurement;
  • SD card function, 2.2 million sets of data storage;

Common Applications: 

  • Cooling and heating fluid measurements
  • Water and wastewater measurements
  • Leak detection in piping systems
  • Monitoring and controlling of HVAC systems
  • Fuel and oil consumption measurements
  • Checking other flow meters
  • Flow and usage audits
  • Interface detection
  • Offshore applications
  • Automated process control

Specifications of SI-3000H Portable Ultrasonic Flowmeter

Flow rate range ±0.01~±12m/s
Accuracy measurement Level 1





Analog output

4~20mA, maximum load 750Ω

SD card capacity


Maximum storage

512 files

Storage interval




Temperature transmitter, installation ambient temperature
-10 ° C ~ 50 ° C

The sensor measures the medium temperature
-40 ° C ~ 80 ° C (standard)

Relative humidity

0~99%, no condensation

Transmitter protection rating


Sensor seal design

protection class IP68

Standard cable length






Dimensions of Ultrasonic Flowmeters (UFM)

Transmitter wiring:

Open the top cover of the transmitter and you can see the wiring ports on the power board,

from left to right, in order:

Downstream sensor interface (Down Stream),

upstream sensor interface (Up Stream), power switch,

4-20mA output interface, charger port, specific wiring,

please refer to the following figure:

Portable ultrasonic flowmeter Transmitter wiring
Portable ultrasonic flowmeter Transmitter wiring

Technical Parameters:

Sino-Instrument Ultrasonic Flowmeters (UFM),

are available in two models:

portable for mobile sampling measurements,

and a fixed for measuring tasks over an extended period of time,

for continuous measurements in fixed installations.

Both units use the proven and highly precise ultrasonic transit time difference method.

By employing the latest digital signal processors,

these robust measurement flowmeters are extremely accurate and drift-free.

ModelHost description
SI-3000HName: Portable Ultrasonic Flowmeter / Handheld Ultrasonic Flowmeter
Accuracy: ±1% of the measured value
Repeatability: 0.2%
Flow rate range: 0-±12m/s
With SD card and card reader: massive data storage, maximum storage 128 days of historical data
Output: 4-20mA
Mode of operation: 64*128 dot matrix LCD backlight display
Built-in lithium battery working time: rechargeable lithium battery can work continuously for 16 hours after the battery is full

Sensor description
CPCP type slide rail type magnetic sensor
Installation method: external clip
Measurable pipe diameter range: 25mm-1200mm
Sensor cable length: 3m
Probe housing: PC plastic
Working temperature: 0°C-+80°C
Aluminum alloy rail

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