top of page

Make Your Order

By submitting this form, you consent to the processing of your personal data (such as your name, email address, and message) for the purpose of responding to your inquiry. Your data will be stored securely, used only for this purpose, and will not be shared with third parties without your consent. You have the right to access, correct, or request deletion of your data at any time. For more information on how we handle your data, please review our Privacy Policy.

Ege Electronik

​

​

​

​

Looking for a robust, corrosion-proof sensor for liquid flow monitoring? The ST 421 K-F is the perfect fit. With a G1/2 screw-in connection, PTFE construction, and IP68 protection, it ensures reliable performance even in demanding environments.


Key Features:

  • Corrosion-resistant PTFE housing

  • Immersion depth: 48 mm

  • 2 m fixed FEP cable (4x0.25 mm²)

  • Ιnstallation: T-piece connector or welding sleeve

  • Requires amplifier with analog or switching output


Performance Data:

  • Medium: Water, Oil

  • Detection Range:
    Water: 1 … 70 cm/s
    Oil: 2 … 100 cm/s

  • Ambient & Medium Temperature: -10 … +70 °C

  • Start-up Time: typ. 60 s (range: 40–100 s)

  • Reaction Time: typ. 30 s (range: 10–50 s)

  • Compressive Strength: 5 bar

  • Protection Class: IP68 (EN 60529)

  • Sensor Material (wetted parts): PTFE

  • Housing Material: PTFE, PVDF

  • Accessories: 2x G1/2 AFM 34 gaskets (included)


Compatible Amplifiers:

  • SKM 420 GR, SKM 420 GSP, SKM 420 GA

  • SKM 522 GR, SKM 522 WR

  • SKZ 400 GR, SKZ 400 WR-115, SKZ 400 WR

📌 Note: Versions with longer cable available on request.

ST 421 K-F ID. P10431 - EGE Flow Sensor without integrated amplifier

• Corrosion-resistant PTFE housing
• Immersion depth: 48 mm
• 2 m fixed FEP cable (4x0.25 mm²)

Ege Electronik
bottom of page