1. Homepage
  2. Products
  3. Sensors for motion control
  4. Pulse evaluation systems
  5. Evaluation units for flow monitoring
  6. SN2304


Control monitor for flow sensors


{{'OPTIONAL_INFO' | productAvailability | error}}

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

  • For applications in hazardous areas
  • Integrated flow monitoring and wire monitoring
  • Intuitive setting of switch point and medium
  • For the connection of intrinsically safe flow sensors
  • Clearly visible multi-colour LED bargraph display
  • ce
Technische Details
Application Flow monitoring; Wire monitoring
Electrical data
Frequency AC [Hz] 47...63
Operating voltage tolerance [%] -10...10
Operating voltage [V] < 240 AC
Max. power consumption [VA] 5
Reverse polarity protection no
Power-on delay time [s] 30
Number of channels 1
Electrical design relay
Contact rating 4 A (250 V AC cos phi > 0,7) ; 0,2 A (250 V DC); 4 A (24 V DC)
Switching function flow monitoring relay energised when flow is present
Switching function wire break monitoring relay de-energised in case of wire break
Short-circuit proof no
Overload protection no
Software / programming
Adjustment of the switch point potentiometer
Selection liquids / gases slide switch
Operating conditions
Ambient temperature [°C] -20...60
Protection IP 40
Protection rating terminals IP 20
Tests / approvals
Approval PTB 01 ATEX 2075
ATEX marking II (1) G [Ex ia Ga] IIC
MTTF [years] 248
Mechanical data
Weight [g] 536.5
Housing housing for DIN rail mounting
Dimensions [mm] 78 x 45 x 120
Materials plastics
Displays / operating elements
function 11 x LED
switching status LED, red
Electrical connection
Required protection miniature fuse to IEC60127-2 sheet 1; ≤ 5 A; fast acting; Place the fuse outside the hazardous area.
Caution The control monitor must be mounted outside the hazardous area.
Recommendation Check the safe functioning of the unit after a short circuit.
Pack quantity 1 pcs.
Electrical connection
Connection terminals: 15 x ...2.5 mm²
Other data
Maximum values for control circuit
in protection rating intrinsic safety [EEx ia] IIC [EEx ia] IIB [EEx ib] IIC [EEx ib] IIB
Voltage [V] 15.8 15.8 15.8 15.8
Current [mA] 92 92 92 92
Power [mW] 680 680 680 680
External inductance [mH] 1 1 1 1
External capacitance [µF] 0.185 1.6 0.185 1.6
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — EN-GB — SN2304 — 05.11.2012 —