LS-350 Series


Combination Siphon and Level Sensor

  • Multi-Level Switch Options
  • Up to 4 Actuation Points
  • Integral Siphon or Fill Tube
  • Customized Mountings
  • Custom Configurable
Save valuable space and costly installation/maintenance time with these highly customizable sensors. LS-350 units combine a siphon tube and up to four liquid level sensors as a single component. The complete unit installs through a single opening in the fluid container.


Simple and clean — a single component that enables remote monitoring of a tank’s fluid content while allowing access for container filling and draining. These units are custom configured to fit the container of your choice, with a wide range of mountings, fluid and electrical connectors, materials and lengths.


Typical Applications


• Immuno-Chemistry/Cytology
• Hematology
• Automated Urine Analysis
• Laboratory Automation



Operating Principle


The LS-350 Series provides two functions: liquid level monitoring and fluid fill or extraction access. The latter function is accomplished with an integrated siphon tube that runs parallel to the float sensor stem and through the top mounting; it is commonly topped with a barb (or customer specified) fitting for the connection of flexible tubing. Fluid level sensing is accomplished with magnetic reed switch technology. One or more floats encircling a stationary stem are equipped with powerful, permanent magnets. As a float rises or lowers with liquid level, the magnetic field generated from within the float actuates a hermetically sealed magnetic reed switch mounted inside the stem. The switch actuation may be used for alarm, solenoid, pump or other fluid control operations.


1. Mounting Types

Each mounting type can be configured with stem lengths (LO) and as indicated below.





2. Float Types


3. Electrical Specifications

Typically, one float is required for each point at which you need a switch action to occur. The number of actuation levels available depends on the Group Type Wiring selected; see below.


Group I Wiring: 1 to 4 Actuation Levels.
Group II Wiring: 1 or 2 Actuation Levels.
Switch (SPST, N.O. or N.C.): 10/20/50/100 VA.



5. Electrical Connections

Type 1: Lead Wires, 24˝ to 26˝ (610 mm, Min.)
Type 2: Cable, 24˝ to 26˝ (610 mm, Min.)


6. Actuation Level Dimensions



Switch actuation levels are determined following the guidelines below.

A = Minimum distance to highest actuation level.

B = Minimum distance between actuation levels.

C = Minimum distance between two actuation levels with one float (Note: One float for two levels can be used only when low level is N.C. dry and high level is N.O. dry).

D =Minimum distance from end of unit to lowest level.



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LS-350 Series


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Etiquetas: LS-350, SERIES LS-350, GEMS