Gems Sensors Series Level Switch

Gems Sensors Series Level Switch

 Small Size – Alloys, Combines Durability of Metal With a Compact Design for Restricted Spaces

Quick Specs...

• Stainless Steel or Brass Mountings and Stems
• 1 to 5 Actuation Levels
• Lengths to 48 inches
• U.L. Recognized; CSA Listed Versions Available

Overview / Design Principle:

These compact units feature the rugged durability of stainless steel or brass construction in a lightweight package. Ideal for tanks less than 4 feet. LS-700 Series switches are exceptionally versatile because of the many useful options available. Described briefly below, these options can extend the functionality of your GEMS LS-700 Series custom switch.

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.

Type 1 1/8" NPT	Type 2 3/4" NPT †	Type 3 1" NPT †	Type 4 3-5/8" dia. flange	Type 5 1-5/16"-12UNF-2A	Type 6 3/8"-24	No Mounting
† Mounting Types 2 & 3 are available with a 1/2" MNPT conduit adaptor. Note: Sanitary flange mountings are also available, but not shown. Please contact factory.

Float Types: 

39049	138030	133764	60241	141750	156900	136550	158369

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

Electrical: 

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.

Typical Wiring Diagrams

For clarity, only two actuation levels are shown in each group diagram.

Group I	Group II
Wiring  Group I    Common    L1  L2 L3 L4 L5  Black NO/NC Red Yellow Blue Brown Orange	Wiring  Group II    Common    L1  L2 L3 L4 L5  None SW Com Red Yellow Blue None NO/NC Red Yellow Blue

Notes:
1. Units with 100 VA switches are not U.L. Recognized or CSA Listed.

Actuation Level Dimensions

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.  L1, L2, L3, L4 & L5 actuation level distances and Lo (overall unit length) are measured from inner surfaces of mounting plug or flange.  Lo (Length overall) = L1 + Dimensions D . See mounting types for maximum length values.

Dimensions  Part Number  A  B  C  D  39049  7/8" (22.2 mm)  1-3/4" (44.4 mm)  1/8" (3.2 mm)  3/4" (19.1mm)  156900  3/4" (19.1 mm)  1-7/8" (47.6 mm)  1/8" (3.2 mm)  1-1/16" (27.0 mm)  138030  15/16" (23.8 mm)  2-1/16" (52.4 mm)  1/8" (3.2 mm)  1" (25.4 mm)  60241  3/4" (19.1 mm)  1-13/16" (46.0 mm)  1/8" (3.2 mm)  15/16" (23.8 mm)  141750  13/16" (20.6 mm)  2" (50.8 mm)  1/8" (3.2 mm)  1-1/18" (28.6 mm)  158369  13/16" (20.6 mm)  2-7/16" (61.9 mm)  1/8" (3.2 mm)  1-3/4" (44.4 mm)  136550  9/16" (14.3 mm)  2-7/16" (61.9 mm)  1/8" (3.2 mm)  1-3/4" (44.4mm)  133764  15/16" (23.8 mm)  1-7/8" (47.6 mm)  1/8" (3.2 mm)  7/8" (22.2 mm), N.O. 1-3/16 " (30.2 mm), N.C.  145730 7/8" (22.2 mm) 1-7/16" (36.5 mm) 1/8" (3.2 mm) 7/8" (22.2 mm) Notes: 1. A, B and D dimensions based on a liquid specific gravity of 1.0. 2. Tolerance on actuation levels is ±1/8" (3.2 mm). 3. For bent stem versions, please request drawing LS-77700.