General Specifications
 
AC: 120 or 240V (50/60 Hz), 1.4 VA
DC: 12 or 24V (-25 to +15%), 1.8 W
Accepts electro optic probes or customer
  supplied float switches
 
10 A, SPDT relays (1/3 hp @ 120 VAC)
1-60 second time delay adjustment
High or low level failsafe adjustment
LED alarm status indicator
Polycarbonate enclosure
 
Electro Optic Level Switch Controller, One Channel
LEVELITE's perfect choice for simple "one switch" applications.

 Protect pumps and warn of "dry" running
 Prevent overflow or warn of material shortage
 Time based filling and emptying

  Description   Part Number
  120VAC  GLL101S1N
  240VAC  GLL101S2N
  12VDC  GLL101S3N
  24VDC  GLL101S4N

Electro Optic Level Switch and Pump Controller, Two Channel
Increase flexibility with our Two Channel Controller Systems

 Provides dual alarms
 Automatically directs pump up or pump down operation

  Description   Part Number
  120VAC  GLL102S1N
  240VAC  GLL102S2N
  12VDC  GLL102S3N
  24VDC  GLL102S4N

Dimensional Drawing
Detect leaks, protect pumps and prevent spills with LEVELITE's miniature Electro Optic Level Sensors for OEM systems.
 
General Specifications
 
Operates with all electro optic controllers
Repeatability: 0.5 mm
Includes 25' (7.62m) PVC jacketed cable
  (user extendable)
1/2” NPT process and conduit connections
A Popular Industry Choice for...
 
Ultrapure water and water treatment
Semiconductor and Pharmaceutical manufacturing
Laboratory testing and chemical dispensing systems
Leak detection in electronic enclosures, dual
  containment piping, and diked areas
Beverages, chemicals, acids, caustics, water, epoxys,
  lubricants, glycols, vegetable oils, adhesives and
  solvents
 
Versatility is the key to LEVELITE's Electro Optic Level Sensors. Ideal for controlling any transparent or translucent liquid.

 Compact sensors fit anywhere
 PFA Teflon® probe for all high purity and corrosive liquids
 Detects liquids regardless of conductivity, color or specific gravity
 Eliminates pump cavitation when installed in advance of the pump
 Automatic pump control and high or low alarms

GLL110000 Polysulfone Electro Optic Probe
This probe is preferred for most oil, water and mildly corrosive applications.

 LEVELITE’S lowest priced probe
 Operating Temperature: -20°F to 200°F (-29°C to 94°C)
 Max Pressure: 100 psig (7kg/cm2)

GLL110118 Polysulfone Electro Optic Sanitary Probe
Ideal for applications in the food and pharmaceutical industries.

 11/2" Tri-Clover type flange for CIP/other sanitary applications
 1/2" NPT conduit connection
 Operating Temperature: -20°F to 200°F (-29°C to 94°C)
 Max Pressure: 100 psig (7kg/cm2)

GLL110010 PFA Teflon® Electro Optic Probe
Our best sensor for any corrosive or high purity liquid. Widely used in manufacturing of semiconductors, high purity liquids, ultrasonic cleaning and photography.

 Widely used in corrosive liquids
 Made from non-stick Teflon® to prevent coating
 Operating Temperature: -20°F to 200°F (-29°C to 94°C)
 Max Pressure: 100 psig (7kg/cm2)

LEVELITE’s quartz tip electro optic probes are designed for use with quartz tips (see below). The quartz tips are excellent for high pressure or high temperature applications, and also provide excellent corrosion resistance to many chemicals and solvents. The Teflon® light guide on the probe tip concentrates the light coming through the probe for greater signal strength.
Order probe and quartz tip separately.
GLL110020 Polypropylene Quartz Tip Electro Optic Probe
 Excellent for high level applications
 Quartz sensing tips built to your length specification. Order separately
 Operating Temperature: -20°F to 150°F (-29°C to 65°C)
 Max Pressure: 100 psig (7kg/cm2)

GLL110021 316 SS Quartz Tip Electro Optic Probe
 Excellent for high level applications
 Quartz tip length built for your application. Order separately.
 Operating Temperature: -20°F to 212°F (-29°C to 100°C)
 Max Pressure: 500 psig (35kg/cm2)

Quartz Tips
 5/8" to 10" Insertion Length
 Rulon® Seal
 Teflon® Light Guide
 Viton® O-Ring

GLL numbers increase by 10 with every inch (25.4mm). No half sizes.

  Description   Part Number
  5/8” (15.88mm)  GLL111000
  1” (25.4mm)  GLL111010
  2" (50.8mm)  GLL111020
  3" (76.2mm)  GLL111030
  4" (101.6mm)  GLL111040
  5" (127mm)  GLL111050
  6" (152.4mm)  GLL111060
  7" (177.8mm)  GLL111070
  8" (203.2mm)  GLL111080
  9" (228.6mm)  GLL111090
  10" (254mm)  GLL111100

Home | About LEVELITE | Products | Product Manuals | Product Specification Sheets  
Find Your LEVELITE Representative | Contact LEVELITE | Terms and Conditions