SM6100 IFM Electromagnetic Flow Sensor | SM6100 with IO-Link, 3 Outputs, LED Display

SM6100 IFM Electromagnetic Flow Sensor for Conductive Liquids

The SM6100 is a magnetic-inductive flow sensor from IFM. It measures conductive liquids with high accuracy. Three output types cover many control tasks. A 4-digit LED display shows flow and temperature. The stainless steel body fits tight machine spaces.

Core Specifications

• Brand: IFM
• Model: SM6100
• Series: SM electromagnetic flow sensor
• Type code: SMR12GGXFRKG/US-100
• Measuring principle: Magnetic-inductive
  • Best fit for water and water-based media
  • Needs conductivity of at least 20 µS/cm
  • Viscosity below 70 mm²/s at 40 °C
• Flow range: 0.1 to 25 l/min (0.005 to 1.5 m³/h)
  • Display range: -30 to 30 l/min
  • Resolution: 0.02 l/min
• Switch points:
  • Set point SP: 0.25 to 25 l/min
  • Reset point rP: 0.1 to 24.9 l/min
  • Analog start ASP: 0 to 20 l/min
  • Analog end AEP: 5 to 25 l/min
• Pulse output: 0.00001 to 30000 m³
  • Pulse length: 0.01 to 2 s
• Temperature monitoring: -20 to 80 °C
  • Resolution: 0.2 °C
  • Accuracy: ±2.5 K when flow is above 1 l/min
• Accuracy and response:
  • Flow accuracy: ±(0.8% of value + 0.5% of final value)
  • Repeatability: ±0.2% of final value
  • Response time: 0.15 s
  • Delay dS/dr: 0 to 50 s
  • Damping dAP: 0 to 5 s
• Process connection: G 1/2 external thread, DN15, flat seal
• Pressure resistance: 16 bar (1.6 MPa)
  • CRN max working pressure: 15.3 bar
• Medium temperature: -10 to 70 °C
• Wetted materials: Stainless steel 1.4404 / 316L, PEEK, EPDM
• Housing materials: Stainless steel 1.4404 / 316L, PBT-GF20, PC, FKM, TPE
• Installation runs:
  • Inlet run: 3 x DN
  • Outlet run: 1 x DN
• Display: 4-digit alphanumeric
  • 6 green LEDs for units
  • 2 yellow LEDs for switch status

Electrical and Communication

• Supply voltage: 18 to 30 V DC (SELV / PELV)
• Current consumption: 95 mA at 24 V
• Protection class: III, with reverse polarity protection
• Power-on delay: 5 s
• Digital outputs: 2 x PNP/NPN, NO/NC configurable
  • Voltage drop: 2 V max
  • Continuous current: 200 mA
• Analog output:
  • 4 to 20 mA, load 500 Ω max
  • 0 to 10 V, load 2000 Ω min
• Pulse output: For flow rate
• Input: Counter reset
• Short-circuit and overload protection: Yes, pulsed type
• Connector: M12, 4-pin, coding A, gold-plated contacts
• IO-Link:
  • Revision 1.1, COM2 (38.4 kBaud)
  • Standard: IEC 61131-9
  • SIO mode: yes
  • Master port type: A
  • Minimum cycle time: 5 ms
  • DeviceID: 569

Environment and Durability

• Operating temperature: -10 to 60 °C
• Storage temperature: -25 to 80 °C
• Protection rating: IP 67
• EMC: DIN EN 60947-5-9
• Shock: DIN IEC 68-2-27, 20 g for 11 ms
• Vibration: DIN IEC 68-2-6, 5 g from 10 to 2000 Hz
• MTTF: 145 years
• Pressure Equipment Directive: Good engineering practice
  • Suitable for fluid group 2
  • Group 1 fluids on request
• Approvals: CE, UKCA, UL, CRN, DNV, KTW/W270, Reg (EU) 1935/2004

Physical Data

• Dimensions: 110 x 54 x 54 mm
• Flow body: Cylindrical, Ø 54 mm, length 110 mm
• Weight: 548 g

Best Fit Devices and Applications

• Water treatment lines: Filters, dosing skids, and rinse stations
• Cooling circuits: Machine tools, laser systems, and molds
• Food and beverage units: KTW/W270 approval supports potable water contact
• Process skids: Flow plus temperature monitoring on one device
• Pump protection: Dry-run detection with switch and analog outputs
• IO-Link networks: Direct parameter access from the PLC
• Marine and offshore: DNV approval suits shipboard systems

FAQ

Q: What liquid can this flow meter handle?

A: It works with conductive liquids. Water and water-based media are the main target. The liquid needs at least 20 µS/cm conductivity.

Q: How much straight pipe is needed before the sensor?

A: Allow 3 x DN on the inlet side. Allow 1 x DN on the outlet side. Short runs cause swirl and unstable readings.

Q: Can I read flow and temperature at the same time?

A: Yes. The unit tracks flow and medium temperature together. The 4-digit display shows either value. IO-Link sends both to the controller.

Q: What causes a zero-flow reading to drift?

A: Air bubbles are the most common cause. Trapped gas in the pipe disturbs the magnetic field. Mount the sensor in a full pipe and bleed the line first.

Q: How do I set the analog span for my PLC?

A: Set ASP for the low end and AEP for the high end. Choose a span inside 0 to 25 l/min. Match the load to 500 Ω for current or 2000 Ω for voltage.

Q: Is a separate temperature probe needed?

A: Usually no. The built-in temperature channel covers -20 to 80 °C. Accuracy stays within ±2.5 K when flow exceeds 1 l/min.