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Tokyo Keiso FS-100 Series Spring Balanced Displacer Type Level Switch

Made in Japan

Manufacturer: Tokyo Keiso

Model: FS-100 Series

FS-100 is a spring balanced displacer type level switch.
The pressurized part and electric part are perfectly isolated by magnet coupling system to offer much more safety and durability compared to other mechanical sealing types. FS-100 can meet tough application with high temperature and high pressure. Hermetical seal switch is newly added for heavy duty applications.

Features

  • Wide selection range for temperature and pressure.
  • Variety of material selection for displacer, spring and chambers for suitable anticorrosive capability.
  • Perfect isolation between pressurized part and electric compartment by magnetic coupling for high reliability and safety.
  • In addition to watertight construction, pressure tight and intrinsically safe versions are ready to meet hazardous application.
    Especially, pressure tight flameproof suitable for Hydrogen atmosphere (Ex dIIC T6) is available which eliminates the necessity of safety barriers.

Applications

  • Fuel oil tank level control
  • Process control for petrochemical plants
  • Water treatment plants
  • Other liquid level control

Specifications

Measuring theory By spring balanced displacer
Measuring object All types of liquids (Viscosity: Max. 600 mPa·s. Liquid without sticking, crystallization, or freezing)
Level measurement: Density 0.45 g/cm³ or more
Interface measurement: Density difference of 0.2 g/cm³ or more
*Number of points for alarm: 1 point
Pressure range Full vacuum to 4.9 MPa
Temperature range -60 to +400℃
(Up to -196°C on request. Consult factory for details)
Process connection Tank top: 3″ flanges (4″ for low density)

Tank side chamber: 1″ flange

Construction (1): Water tight construction: equiv. to IP 65

(2): Flameproof construction: Ex d IIC T6
(CENELEC certified available)

(3): Intrinsically safe construction: Ex ia IIC T6
(EB3C intrinsically safe relay barrier is to be used.)

Material Liquid and vapor contact part: SUS304, SUS316

Displacer: SUS304, SUS316, SUS316L (Option: UNS N10276, TP340)

Flange: Carbon steel, SUS304, SUS316, SUS316L

Packing: Vortex gasket

Housing: Aluminum alloy

Other material on request

Alarm contacts Number of point: Max. 4 points
Applicable alarm of interface detection is 1 point

Type of switch: Std.: 1 x SPDT Microswitch

Option: 2 x SPDT Microswitch
Hermetically sealed microswitch

Accuracy ・Accuracy: ±10mm (Density 1.0g/cm³)
・Repeatability: ±5mm (Density 1.0g/cm³)
・Reset span: Max.40mm (Density 1.0g/cm³)
*For level detection with water (AMB, ATM).

 

 

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