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Flow sensor with integrated backflow prevention


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Your ifm team

  • Reliable volumetric flow monitoring of the internal cooling of the drill on machine tools
  • With integrated backflow preventer
  • Intuitive continuous adjustment of the switch points
  • Robust housing with very high pressure rating
  • Very short response time
  • ce
  • eac
  • cul
Technische Details
Product characteristics
Number of inputs and outputs Number of digital outputs: 1
Process connection G 1/2
Application machine tools; Internal cooling of drill
Medium temperature [°C] 0...60
Pressure rating [bar] 200
Electrical data
Operating voltage [V] 10...30 DC; (to SELV/PELV)
Current consumption [mA] < 15
Protection class III
Reverse polarity protection yes
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 1
Total number of outputs 1
Output signal switching signal
Electrical design PNP
Number of digital outputs 1
Output function normally open
Max. voltage drop switching output DC [V] 2.5
Permanent current rating of switching output DC [mA] 100
Short-circuit protection yes
Overload protection yes
Measuring/setting range
Flow range [l/min] 75
Setting range [l/min] 0.3...50
Accuracy / deviations
Repeatability [% of the final value] 1
Hysteresis [l/min] 0,1...1,5
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] 15.78
Mechanical data
Weight [g] 764
Materials aluminium anodised; PA
Materials (wetted parts) stainless steel (1.4310 / 301); stainless steel (1.4301 / 304); aluminium anodised; PBT; PU; O-ring: FKM
Process connection G 1/2
Switching cycles mechanical 10 million
Displays / operating elements
switching status 4 x LED, yellow
Accessories (supplied)
sealing plugs
Temperature changes slightly affect the specified standard settings for coolants.
For oils, the settings are influenced by temperature and viscosity.
Recommendation Use 200 micron filtration
All data refer to coolants (20 °C).
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SBU324-04 — 12.12.2013 —