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Series Level Switch  LS-300TFE Gems Sensors

Gems Sensors Series Level Switch

Semiconductor Process Equipment, Pure Chemical Delivery System, Wafer Cleaning and Etching Systems
Stock
-1
Code
LS-300TFE

Gems Sensors Series Level Switch

 Small Size – Engineered Plastics, All-Teflon® Wetted Parts for Ultra-Pure Fluids

Quick Specs... 

  • Low Particle Generation-One piece Molded Design 
  • Corrosion Resistant 
  • 1 to 4 Actuation Levels in a Single Unit 
  • Lengths to 24"

Overview / Design Principle: 

Typical Applications: 

  • Semiconductor Process Equipment 
  • Pure Chemical Delivery System 
  • Wafer Cleaning and Etching Systems 
  • Cabinet Leak Sensing 

How To Order: 

To Request a Quote: Use the information on this page to complete our online checklist. Gems will promptly provide you with a quotation for your specific application.

 

Mounting Types: 

Each mounting type can be configured with stem lengths Lo and float materials indicated in the table below. 

LS300TFEType11.gif 
LS300TFEType22.gif 
LS300TFEType24.gif 
LS300TFEType25.gif 
Type 11
No Mounting
 
Type 21
1" NPT
 
Type 22
1/4" NPT
 
Type 31
3/8" NPT
 

 

Electrical: 

LS300TFEType1.gif 
LS300TFEType2.gif 
LS300TFEType3.gif 
Type 1 Leadwire 
Type 2 Cable 
Type 3 Liquid-Tight Cable 
Extended Leads 
#22 AWG Teflon Wire or #24 AWG PVC Jacketed Cable 

*Available on Mounting Type 22 only. 


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. 

 

Float Types: 

LS300TFEPTFE.gif 
LS300TFEPVDF.gif 
PTFE 
PVDF 

 

Float Material 
Operating Temperature 
Pressure, PSI (bar),
MAX. at Ambient Temperature
 
M"Media Specific Gravity 
PTFE 
+32°F to +212°F (0°C to 100°C) 
25 (1.7) 
.86 
PVDF 
-40°F to +250°F (-40°C to 121°C) 
50 (3.4) 
.86 

Note: A single float type is selected for use at all actuation points. 

 

Wiring Group: 

wireLS-300TFEGr1b.gif 
wireLS300TFEGr2b.gif 
wireLS300TFEGr1cb.gif 
wireLS300TFEGr2cb.gif 
Group I Lead Wire (*) 
Group II Lead Wire (*) 
Group I Cable (*) 
Group II Cable (*) 

* Pin correlation of plug and connectors shown in parenthesis. 

 

Actuation Level Dimensions 
 dimls300tfe 
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. 
E  5/16" Dia. REF (7.9 mm) 

L1, L2, L3 & L4 actuation level distances and Lo (overall unit length) are measured from inner surfaces of mounting plug or flange.

Lo (Length overall) = L + Dimension D ( Lo max 24 inches)
 

Dimensions 
Float Material  A  B  C  D 
PTFE  1-3/4" 
44.5 mm*
 
2"
50.8 mm
 
1/8"
3.2 mm
 
1-1/4"
31.8 mm
 
PVDF  1-3/4"
44.5 mm*
 
2"
50.8 mm
 
1/8"
3.2 mm
 
1-1/8"
28.6 mm
 
*Mounting Type 22 (1" NPT) requires a minimum "A" dim. of 1-3/4" (44.5mm)
  
 

Product Documentation

LS-300TFE Series
LS-300TFE Series - Download PDF
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