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Flow sensor for liquids - differential pressure principle

With USB connection for quick evaluation.

flow sensor

Description

  • Version with USB and RS485 interface for quick evaluation
  • Continuous 100Hz background sampling
  • Flow measurements of up to 15 ml/min, 30 ml/min or 100 ml/min
  • Pulse measurement > 20 μl
  • For water, oil and other low viscous media (< 100 mPas)
  • Insusceptible to bubbles
  • Fast response
  • Integrated temperature and pressure sensor
  • Suitable for Hydrogen-peroxide (H2O2) measurement

Technical specifications

Sensor type
Differential Pressure Flow Sensor
Connectors
¼-28 UNF flat bottom
Wetted materials
PEEK, FPM, 1.4301 stainless steel, Fluorosilicone
Dimensions
72 x 40 x 15 mm
Weight
20 g
Accuracy of volume flow
< ± 2 %
Communication interface
RS-485, USB
Sampling rate
100 Hz
Readout interval
0.01 - 100 s
Voltage
5 VDC
Power consumption
< 50 mA (Standby)
Media calibration
by viscosity and density definition

Versions

Parameters
Symbol
V-15
V-30
V-100
Flow rate
V’
0 - 15 ml/min
0 - 30 ml/min
0 - 100 ml/min
Calibrated flow rate
V’
1 - 15 ml/min
3 - 30 ml/min
10 – 100 ml/min
Operating pressure
pw
0 - 1,8 bar (absolut)
0 - 1,8 bar (absolut)
0 - 1,8 bar (absolut)
Over pressure
po
4 bar (absolute)
4 bar (absolute)
4 bar (absolute)
Burst pressure
pb
6 bar (absolute)
6 bar (absolute)
6 bar (absolute)
Working temperature
Tw
10 - 50 °C
10 - 50 °C
10 - 50 °C
Flow detection response time
T63
10 ms
10 ms
10 ms
Restrictor orifice diameter
Dmin
200 µm
300 µm
500 µm

Dimensions

flow sensor dimensions

General information about the flow sensors

These sensors were designed for measuring dynamic dispensing processes so that drops from 20 microliters can be detected. Due to the fast, continuous sampling rate, even short events such as a pulse or an air bubble are recorded during measurement. The flow sensors measure the flow constantly at 100 Hz, regardless of the configuration of the readout interval, which can be set to a value between 0.01 and 100 seconds.

Read more about the measuring principle of the flow sensors and the advantages:

 

H2O2-small

Sensor evaluation using BMT software

 

Use the BMT software for quick and easy evaluation of the flow sensor. Our evaluation kits offer all the tools and components you need to get started quickly.

You can find more information about the software in our wiki: https://wiki.pumps-valves.eu/Differential_Pressure_Flow_Sensor

 Sensor evaluation using BMT software