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  • Model AX1X Switch Pak Level Switch
  • Length: 6” to 10’(15cm to 3m)
  • Accuracy: ± 1mm in water
  • Repeatability: ±0.5mm in water
  • Orientation: ± 20º vertical
  • Switch points: 1 (factory set)
  • Supply voltage:
    • AV16: N/A
    • AU18: 12-36 VDC
    • AZ18: 12-30 VDC
  • Contact type:
    • AV16: (1) SPDT reed
    • AU18 /AZ18: (1) SPST relay
  • Contact rating:
    • AV16: 15 VA, 0.25A max.
    • AU18 /AZ18: 60 VA, 1A max.
  • Contact output: Selectable NO / NC
  • Process temp: -40 to 176°F (-40 to 80°C)
  • Pressure:
    • AV16: 25 psi (1.7 bar)
    • AU18 /AZ18: 150 psi (10 bar)
  • Enclosure rating: NEMA 4X (IP65)
  • Enclosure mat: PP, UL94VO
  • Terminal strip: 6-pole, socket
  • Conduit entrance: 1/2” NPT
  • Wetted material:
    • AV16-224X: PP
    • AU18-224X: PP
    • AU18-524X: PVDF
    • AZ18-424X: PP-Ryton®
  • Process mount:
    • X243: 2” NPT
    • X247: 1 1/2” G


The Flowline AX1X Switch Pro Level Switch provides reliable, high or low liquid level detection with one relay or reed switch output and a compact junction box for integral wiring termination. Available in three level sensor technologies, select the sensor type based upon your application media. This polypropylene or PVDF liquid level switch package is broadly applied in bulk storage, sump and day tank level applications as a high level alarm or low level alarm.

Additional feature and benefits for the Flowline AX1X Switch Pro Level Switch include:

  • Polypropylene or PVDF single-point level switch package for corrosive liquids
  • 60VA relay or 15VA dry contact selectable NO or NC via wiring
  • Offered in 3 sensing technologies for broad application coverage: ultrasonic, vibration & buoyancy
  • Polypropylene enclosure rated NEMA 4X with swivel base and terminal strip
  • Mount on the top wall of tank
  • Select length for either high or low switch points
  • Switch output interfaces directly with PLC/SCADA
  • Ideal for high alarm/low alarm indication/control
  • Can be used as low level pump protection or high level overflow protection