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Flow transmitter with integrated backflow prevention


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Dear customer,
Unfortunately, this data sheet is not available in the requested language. If you have any further questions, you can contact us by e-mail.

Best regards
Your ifm team

  • Precise detection of flow in pipes
  • Suitable for water, coolants, oil and glycol solutions
  • Reliable backflow prevention with very fast response time
  • Precise linearized analogue output
  • Robust housing with very high pressure rating
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Technische Details
Product characteristics
Process connection Rp 3/4
Media Liquids; water; glycol solutions; oils; coolants
Medium temperature [°C] -10...100
Pressure rating [bar] 40
Electrical data
Operating voltage [V] 18...32 DC; (to SELV/PELV)
Current consumption [mA] < 35
Protection class III
Reverse polarity protection yes
Output signal analogue signal
Analogue current output [mA] 4...20
Max. load [Ω] 500
Short-circuit protection yes
Overload protection yes
Measuring/setting range
Measuring range [l/min] 1...25
Accuracy / deviations
Repeatability [% of the final value] 1
Measuring error [% of the final value] ± 5
Response times
Response time [s] < 0.01
Operating conditions
Ambient temperature [°C] 0...60
Storage temperature [°C] -15...80
Protection IP 65; IP 67
Tests / approvals
DIN EN 61000-6-2
DIN EN 61000-6-3
Shock resistance
DIN EN 60068-2-27 20 g (11 ms)
Vibration resistance
DIN EN 60068-2-6 5 g (10...2000 Hz)
MTTF [years] 778
Mechanical data
Weight [K40] 483
Materials brass chemically nickel-plated; PP; stainless steel (1.4404 / 316L); aluminium anodised; PA
Materials (wetted parts) stainless steel (1.4401 / 316); brass; brass chemically nickel-plated; PP; PPS; O-ring: FKM
Process connection Rp 3/4
Switching cycles mechanical 10 million
Recommendation Use 200 micron filtration
All data refer to water (20 °C).
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12
Diagrams and graphs
Pressure loss
dP Pressure loss
Q volumetric flow quantity
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SBY433-01 — 06.05.2015 —