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Fluxicont FS4SK

Fluxicont FS4SK

Flow switch for general applications Monitoring of flow and temperature in liquids

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  • Accurate level control in liquids

  • Wide range of applications
  • Flow velocities from 3cm/s to 300cm/s
  • Wide process temperature range –20°C to +110°C
  • High process pressure tightness up to 50bar and high protection class IP65/IP67
  • Wide variety of process connections and sensor lengths
  • Wide environmental temperature range –40°C to +85°C
  • Wear-free calorimetric sensor
  • High accuracy – fast response time
  • Integrated evaluation electronic: Digital display, function LED’s, keyboard / Supply direct voltage 24Vdc: 2x switch output PNP / 1x analogue output 4…20mA; Supply universal voltage 20…253Vac/dc: 1x switch output relay / Connector plug M12
  • High operating comfort: enclosure and display rotatable for optimal operability in each installation position
  • Robust high brightness LED display for best readability
  • 3-key operation without additional assistance with tactile feedback
  • Menu navigation based on VDMA standard
Application description

The device is an electronic flow resp. temperature switch for monitoring, control as well as continuous measurement of flow and temperatures in liquids.

Due to the device construction with flow velocities from 3cm/s to 300cm/s , process temperatures from –20°C to +110°C, process pressures up to 40bar, process material stainless steel V4A as well as the availability of industrial standard process connections like thread ISO 228-1 thread ANSI NPT – on request and thread ISO 225-1 M18x1,5 for adapter – on request the device is especially suitable for the use for monitoring cooling water circulation systems of pumps, turbines, compressors and heat exchangers, for monitoring pump functionality, for dry run protection for pumps, for leak monitoring in process lines, monitoring lubrication systems and filter monitoring in the beverage industry.

The flow switch is suitable for demanding measuring requirements. 

Due to its high accuracy and the high flexibility of configuration, the device can be suited a wide variety of applications.

The robust design and the high-quality workmanship turns the device into a very high quality product, which even the most adverse environmental conditions cannot affect, whether the lowest temperatures when used outdoors, extreme shock and vibration or aggressive media.

A captive laser marking of the type label ensures the identifiability throughout the entire lifetime of the device.

Obviously is the optional marking of a measurement point designation resp. TAG, a customer label or of a neutral type label, of course also per laser marking.

A LABS-free resp. silicone-free version, a factory calibration with calibration certificate and a customer specific configuration resp. preset is also optionally available like a material test certificate EN10204 3.1 or factory certifications for drink water resp. food suitability.

Customer specific special versions can be realized on request, e.g. software adaption (menu navigation, special functions, etc.), changed terminal assignment resp. connector orientation, design adaption of the user surface and special designs for the process connection.

Technichal data

Step response time: Flow: ≤ 6s (td = 0s / 0% >> 90% / 100% >> 10%); Temperature: ≤ 4s
Start-up time tOn: Flow: ≤ 10s; Temperature: ≤ 2s

Direct voltage
Electronic output type: A / B / C / D
Supply voltage US: 10,5…35VDC, reverse polarity protected
Residual ripple UPP: ≤ 2VPP / USmin ≤ US ≤ USmax
Supply current IIn: ≤ 100mA S1 / S2 = 0mA    Iout = 22mA
Isolation voltage: 500VAC (electrical connections – enclosure)

Universal voltage
Electronic output type: W
Supply voltage US: 20…253VAC – 48/62Hz    20…220VDC
Supply power PIn: ≤ 4VA / 2W
Protection classification: I (EN 61140)
Overvoltage category: II (EN 60664-1)

Measurement parameter: Flow velocity
Measurement principle: calorimetric
Measurement medium: Liquids
Measurement range: 3…300 cm/s / Greatest sensivity 3…100 cm/s / Factory setting 5…100 cm/s
Temperature gradient: ≥ 300 K/min

Switch output PNP S1 / S2
Electronic output type: A / B / C / D
Function: PNP switch to +L
Output voltage UOut: UOut ≥ US – 2V
Output current IL: 0… ≤ 200mA, current limited, short circuit protected
Rise time T90: < 30µs (RL < 3kR / IOut > 4,5mA)
Switch cycles: ≥ 100.000.000

Switch output relay S1
Electronic output type: W
Function: Relay changeover contact - switch to L/+L
Switching values: ≤ 2A / ≤ 62,5VA / 60W
Switch cycles: ≥ 100.000.000

Analogue output Aout – Current 4…20mA
Electronic output type: A / B / C / D
Operating range IOut: 3,8…20,5mA, min. 3,6mA, max. 22mA
Permitted load RL: ≤ (US - 10,5V) / 20mA Measuring accuracy
Accuracy: Flow: ≤ ±5% MEV14) (5…100cm/s) / (-20°C…+85°C) / ≤ ±10% MEV14) (100…175cm/s) / (-20°C…+85°C); Temperature: ≤ ±1,5K (≥ 20cm/s)
Long term drift: Flow: ≤ ±10% MV13) / year (-20°C…+85°C)
Temperature deviation: Flow: ≤ ±0,4cm/s / K (-20°C…+85°C)

Probe (process wetted): Steel 1.4571/316Ti
Process connection (process wetted): Steel 1.4404/316L / Steel 1.4571/316Ti
Gaskets (process wetted): FPM – fluorelastomere (e.g. Viton®) / EPDM – ethylene-propylene-dienmonomere, FDA-listed

Environmental conditions
Environmental temperature: -20°C...+85°C
Process temperature: -20°C...+110°C; maximum -30°C...+120°C; compensated -30°C...+125°C
Process pressure: ≤ 40 bar
Schutzart: IP65/IP67 (EN/IEC 60529