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Gems Sensors Series Level Switch

Rugged construction and multiple options provide the LS-800 Series with exceptional versatility. Longer and more substantial than other metallic models, the LS-800 is capable of supporting larger,

Stock

-1

Code

LS-800

Gems Sensors Series Level Switch

Large Size – Alloys, The General Purpose Workhorse for Water and Oils

Quick Specs...

Stainless Steel or Brass Mountings
1 to 6 Actuation Levels
Lengths to over 11 feet
U.L. Recognized; CSA Listed Versions Available

Overview / Design Principle:

Rugged construction and multiple options provide the LS-800 Series with exceptional versatility. Longer and more substantial than other metallic models, the LS-800 is capable of supporting larger, more buoyant floats, and is physically stronger for better reliability in contaminated or turbulent media. This series offers SPST or SPDT switches, and a choice of mountings, floats and materials that can be configured for a wide range of applications in water, oils, chemicals and corrosive liquids.

How To Order:

To Order Online: Certain LS-800 Series Level Switches designated as QwikConfig can be ordered online using our Product Configurator. QwikConfig custom sensors ship in just 3 days! QwikConfig options are indicated below by blue colored shading. Gems' product configurator generates a printable sketch of your sensor including specs, a part number and the price.

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 material indicated in the table below.


Type 1 1/2" NPT	Type 2 1-1/4" NPT †	Type 3 2" NPT NPT †	Type 4 3", 150# Dia, Flange dia. flange	Type 5 External Mount, Multi-Station	No Mounting

	No Mounting	Type 1	Type 2	Type 3	Type 4	Type 5
Housing Material	-					Brass or 316 Stainless Steel
Stem & Mounting Material	Brass or 316 Stainless Steel				Flange: Carbon Steel or 316 S.S. Stem: 316 S.S.	Brass or 316 Stainless Steel
Max Length (Lo)	36" (91.4 cm)		60" (152.4 cm)	140" (355.6 cm)		120" (305 cm)
Mounting Position	Vertical + 30° Inclination					-
Float Stops*	Brass Units: Beryllium Copper Grip Rings Stainless Steel Units: S.S. ARMCO PH-15-7MO Grip Rings					Beryllium Copper or S.S. ARMCO PH-15-7 MO
Port Sizes	-					3/4" NPT
* Units greater than 72" overall length are supplied with collars with setscrews (made of same material as stem and mounting) in place of float-stop rings. Collars are optional on units less than 72" overall length. Units requiring 316 SS float stops must be special ordered with 316 SS collars instead of grip rings. In some instances the use of concentration of chlorine and other corrosive compounds in the media require the use of collar type float stops. Consult factory for details.

Float Types:


26032	10558	24864	14569	15666	138935

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

Part Number	Float Material	Compatible Mounting Types	Operating Temperature	M" Liquid Specific Gravity
26032	Buna N	2	Water: to 180° F (82.2° C) Oil: -40° F to 250° F (-40 °C to 121.1°C)	.75
10558	Buna N	1, 3, 4, 5, No Mounting		.55
24864	Buna N	3, 4	-40° F to 300° F (-40° C to 148.9° C)	.55
14569	316 Stainless Steel	1, 3, 4, 5 (Units < 72"),</72"),>		.75
15666	316 Stainless Steel	3, 4, 5 (Units >72")		.75
138935	316 Stainless Steel	1, 3, 4, No Mounting		.80

Pressure Ratings Chart (PSI, Max.)

			Float Part Number
Mounting Type			26032	10558	14569	15666
	1, 2, 3, No Mounting		150		750	300
	4		150
	5	Brass	100 @ +70°F
		316 S.S	150		750	300
Review the Compatible Mounting Type row in the Float Types table for produceable mounting/float combinations. Not all combinations implied by this Pressure Rating Chart are possible or recommended.

Electrical:

Switch (N.O. or N.C.)
SPST	20 VA
SPST	100 VA
SPDT	20 VA
Lead Wires	#22 AWG, 24" L., Polymeric
Approvals	LS-800 Series Switches are U.L. Recognized - File No. E45168; CSA Listed - File No. 30200

Typical Wiring Diagrams

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

Group I SPST	Group II SPST	Group III SPDT	Group IV SPDT

Wiring Color Code

SPST Switches				SPDT Switches 20 VA
Wiring	Group I	Group II		Group III		Group IV
Com. Wire	Black	None		Black		None
	NO/NC	SW. Com.	NO/NC	NO	NC	SW. Com.	NO	NC
L₁	Red	Red	Red	Red	Wh/Red	Red	Wh/Red	Wh/Blk/Red
L₂	Yellow	Yellow	Yellow	Yellow	Wh/Yel	Yellow	Wh/Yel	Wh/Blk/Yel
L₃	Blue	Blue	Blue	Blue	Wh/Blue	Blue	Wh/Blue	Wh/Blk/Blu
L₄	Brown	Brown	Brown	Brown	Wh/Brn	Brown	Wh/Brn	Wh/Blk/Brn
L₅	Orange	Orange	Orange	Orange	Wh/Orn	Orange	Wh/Orn	Wh/Blk/Orn
L₆	Gray	Gray	Gray	Gray	Wh/Gry	Gray	Wh/Gry	Wh/Blk/Gry
Notes: 1. Non-U.L. Recognized units (white areas) use #22 AWG, 24in, L., Teflon Lead wires. 2. Units with 50 VA and 100 VA switches are not U.L. Recognized or CSA Listed. 3. See Electrical Data on Page A-4 for more onformation

Actuation Level Dimensions

Switch actuation levels are determined following the guidelines:
All units 72" or less L_o with Stainless Steel or Buna N floats. Also Type 5 units over 72" L_o with Buna N floats
A	1-1/2" (38.1 mm) minimum distance to highest level (2", Type 5 only).
B	2" (50.8 mm) minimum distance from end of unit to lowest level.
C	3" (76.2 mm) minimum distance between levels.
D	1/4" (6.3 mm) minimum distance between actuation levels (Note: One float for two levels can be used only when low level is N.C. dry and high level is N.O. dry).
Types 1, 3, 4, and 5 units with stainless steel float, Part Number 15666
A	1-5/8" (41.3 mm) minimum distance to highest level (2" , Type 5 only).
B	2-1/2" (63.5 mm) minimum distance from end of unit to lowest level.
C	4" (101.6 mm) minimum distance between level.
D	1/4" (6.3 mm) minimum distance between actuation levels (Note: One float for two levels can be used only when low level is N.C. dry and high level is N.O. dry).
L₁ thru L₆ actuation level distances and L_o (overall length) are measured from inner surfaces of mounting plug or flange.
L_o (length overall) = L₁ + Dimension B . See mounting typesfor maximum length values.
Notes: 1. A, B and C dimensions based on a liquid specific gravity of 1.0. 2. One float for two levels can be used only when 20VA switch is used. 3. Actuation levels are calibrated on descending fluid level, with water as the calibrating fluid, unless otherwise specified. 4. Tolerance on actuation levels is ±1/8"(3.2 mm).

Product Documentation

LS-800 Series

LS-800 Series - Download PDF

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