Gem Sensors Series Level Switch
Small Size, Engineered Plastics - Offers High Reliability, Compact Size and Affordability in NPT, Straight and Metric Threads
Quick Specs...
- Solid Foamed Polypropylene Float Offers Narrower Design - only 3/4" Wide for Tight Spaces
- Polysulfone Float: For water based liquids, with limited use in oils and chemicals
- Polypropylene Float (hollow): Features a low specific gravity float offering broad chemical compatibility.
- Polypropylene Float (Solid): With polypropylene stem and float, switch offers broad chemical compatibility.
- Buna N Float: Ideal for oils and fuels
- ALL-PVDF: Stem and float of corrosion-resistant PVDF for ultra-pure applications.
Overview / Design Principle:
The durable construction of these reed switch designs ensures long, trouble-free service. Because the effects of shock, wear and vibration are minimized, these hermetically sealed switches provide precise repeatability with no more than 1% deviation. The switch actuation points remain constant over the life of the unit.
Ideal for shallow tanks or restricted spaces, or for any low-cost, high volume use. LS-3 Series are available in FDA/NSF compliant materials upon request, consult GEMS for details.
Dimensions:
 |
| A |
17/32" (13.4 mm) |
| B |
2-3/32" (53.2 mm) |
| C |
1-9/16" (39.7 mm) |
| D |
Dimension depends on Float Material - see chart below |
| E |
1" DIA (25.4 mm) |
| F |
1" (25.4 mm) |
| G |
1/2" HEX |
| H |
1/8" NPT |
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D: L1 = Switch actuation level, nominal (based on a liquid specific gravity or 1.0)
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Polysulfone Float:
|
3/4" (19.0 mm) |
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Polypropylene Float (Hollow):
|
13/16" (20.6 mm) |
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Polypropylene Float (Solid):
|
9/16" (14.3 mm) |
|
Buna N Float:
|
13/16" (20.6 mm) |
|
PVDF Float:
|
1/2" (12.7 mm) |
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|
|
| 3/8"-16, Straight Thread |
G1/8", 1/8"-28 BSP |
M12x1.75, Straight Thread |
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|
|
A
|
.390" Ref. (9.9 mm) |
|
B
|
1/2" HEX |
| C |
.14" (2.6 mm) |
Electrical Termination: Lead Wires
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|
|
|
|
A
|
.315" Ref. (8.0 mm) |
|
B
|
9/16" HEX |
| C |
.14" (2.6 mm) |
Electrical Termination: Cable
|
|
|
|
|
A
|
.475" Ref. (12 nmm) |
|
B
|
5/8" HEX |
| C |
.20" (5.1 mm) |
Electrical Termination: Cable
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| Specifications: |
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Electrical Termination
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No. 22 AWG, 24" L., PVC Lead Wires. On BSP and Metric mounting: PVC Jacketed 2-Conductor No. 22 AWG Cable (except NSF version utilizes PVC Lead Wires).
On PVDF unit: No. 22 AWG, FEP Teflon® Jacketed, 24" - 26".
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Approvals
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U.L. Recognized – File No. E45168; CSA Listed - File No. 30200. CE; Declaration Available Upon Request, NSF Std. C-2 Available see chart below.
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Switch SPST
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20 VA, 120-240 VAC. Units are shipped N.O. unless otherwise specified. Selectable, N.O. or N.C., by inverting float on unit stem
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IMPORTANT REED SWITCH PROTECTION INFORMATION: Read before installing.
*LS-3 switches supplied with standard 1" float. Smaller 3/4" float for tight spaces available - specify P/N 201540.