Capacitance Type Level Switch ALN/ST Series

The capacitance type level switch detects level of any kind of
materials (powder, granule, lump, liquid, paste, bubble, etc.)
More than 1,000 types of electrode shapes and special circuits
are available to cover many different applications.

Catalog Download

Features

  • Highly sensitive and stable.
  • Excellent mechanical strength and durability.
  • Stable detection even with contamination or deposits on electrode.
  • Applicable to highly conductive materials.
  • Easily detects highly corrosive materials.

Operating Principles

It detects the variations of capacitance between
main electrode and tank wall or grounding electrode.
As the level in the tank rises, the capacitance value increases, which makes an output contact when it exceeds the preset value.
ModelALN
Power Source105 / 210VAC ±10% 50/60Hz
Power Consumption4.5VA
Contact Capacity250VAC 5A max.　30VDC 5A max (Resistance load)
※Minimum current load 10mA (24VDC)
Allowable Temperature
(Amplifier)		-25～+60℃
Stable Detection Range1：High Sensitivity 0.5～20pF
2：Standard Sensitivity 2～50pF
3：Low Sensitivity 20～1000pF
4：Ultra Low Sensitivity 5～35Ω
ON DelayMax.10 seconds, variable
ColorGold
Enclosure RatingIP67

Product Lineup

In addition to the above, various specifications are available.
For more information, see respective catalogs or contact us by phone or mail.

  • B1

    Standard Type
    Straight Electrode

    B1

    Standard Type
    Straight Electrode

    • Electrode length is selectable.
    • Standard electrode material is SUS304. SUS316 and SUS316L as options.
    • Insulator material is selectable for each application. (PA/Teflon/Glass Teflon)
    • Standard process connection screw is R1. Other screw type is also available.

  • B1.H1

    Heat-Resistant Type
    Straight Electrode

    B1.H1

    Heat-Resistant Type
    Straight Electrode

    • Heat resistant up to 180℃. (Insulator; Glass Teflon)
    • Electrode length is selectable.
    • Standard electrode material is SUS304. SUS316 and SUS316L as options.
    • Insulator material is selectable for each application. (Teflon/Glass Teflon)
    • Standard process connection screw is R1. Other screw type is also available.

  • B410.H3

    Ultra Heat Resistant Type
    Straight Electrode

    B410.H3

    Ultra Heat Resistant Type
    Straight Electrode

    • Heat resistant up to 400℃.
      (Remote amplifier type)
    • Electrode length is selectable.
    • Standard electrode material is SUS304. SUS316 and SUS316L as options.
    • Various flange types are available.

  • F27

    Flat Electrode (with Earth Elactrode)

    F27

    Flat Electrode (with Earth Elactrode)

    • Suitable for low level detection or where electrode can not intrude into the tank.
    • Electrode length and diameter are selectable.
    • Standard electrode material is SUS304. SUS316 and SUS316L as options.
    • Insulator material is selectable based on each application. (PA/Teflon/Glass Teflon)
    • Various flange types are available.

  • P2.17

    Teflon Coating Type
    Flared Straight Electrode

    P2.17

    Teflon Coating Type
    Flared Straight Electrode

    • Suitable for corrosive material.
    • Electrode length is selectable.
    • Standard covering material FEP. PFA as an option.
    • Any flange type is available. Any flare diameter is available based on the process connection.

  • L1

    Standard Type, Pipeline Electrode

    L1

    Standard Type, Pipeline Electrode

    • Various flange types are available.
    • Ferule or liner is available.
    • For corrosive material, teflon covering model is suitable.

  • W8.B1

    Standard Type, Wire Electrode

    W8.B1

    Standard Type, Wire Electrode

    • For high or middle level detection.
    • Length is selectable.
    • Wire length is adjustable at site.

  • W12

    Withstand Load Type, Wire Electrode

    W12

    Withstand Load Type, Wire Electrode

    • For low level detection.
    • Length is selectable.
    • Wire length is adjustable at site.