Gems Sensors Series Level Switch
Overview / Design Principle:
Your most complete line of small, polysulfone liquid level switches...all from Gems Sensors. Designed for the high quantity needs of the OEM, LS-300 Series Switches are the ideal level sensor for shallow tanks and reservoirs. Compact and versatile, these low-cost, plastic level switches offer a broad choice of mountings and fl oat materials. The following pages illustrate the various design parameters available to confi gure custom LS-300 Series Switches.
How To Order:
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.
Wiring:
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Group I Lead Wire (*)
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Group II Lead Wire (*)
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Group I Cable (*)
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Group II Cable (*)
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* Pin correlation of plug and connectors shown in parenthesis.
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Float Types:
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187553
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39049
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39005
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197732
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119455
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145730
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A single float type is selected for use at all actuation points.
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Float Material
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Part
Number
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Float Material
Suitable for...
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Operating Temperature *
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Pressure, PSI (bar), MAX.**
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M"Media Specific Gravity
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Buna N
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187553
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Oil, Fuels
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Water: to 180°F (80°C)
Oil: 221°F (105°C)
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300 (21)
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.70
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39049
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Water: to 180°F (80°C), Oil: -40°F to +221°F (-40°C to +105°C)
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250 (17)
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.50
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Polysulfone
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39005
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Waterbased Liquids
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-40°F to +221°F
(-40°C to +105°C)
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50 (3.5)
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.75
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Polypropylene (Solid Foam)
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197732
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Broad
Chemical Use
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-40°F to +210°F
(-40°C to +100°C)
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Atmospheric
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.95
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119455
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150 (10)
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.90
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Polypropylene (Hollow-20% Glass-Filled)
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145730
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Low Specific Gravity Liquids
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-40°F to +221°F
(-40°C to +105°C)
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50 (3.5)
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.60
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* Operating temperature based on float ratings.
** When used with mounting Type 21, 32 or 22 only; Mounting Type 61, and 63 are not recommended for pressure applications. Pressures are derated with increasing temperature.
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Electrical:
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Type 1
Leadwire
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Type 2
Cable
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Type 3
Liquid-Tight Cable
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Type 4
Junction Box Assembly
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Type 5
DIN43650 Plug
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Type 6
DIN 43651 Plug
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Compatible
Mounting Type(s)
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Protection Rating
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Extended Leads
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Max. Number of Levels
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Group I
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Group II
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Type 1
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All
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IP64
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#22 AWG PVC Wire, 24" (610mm) M"
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4
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2
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Type 2
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All
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IP64
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#22 AWG PVC Jacketed Cable, 24" (610mm) M"
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4
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2
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Type 3
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42
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IP68
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#22 AWG PVC Jacketed Cable, 24" (610mm) M"
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4
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2
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Type 4
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42
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IP65
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Terminal Box (7 Terminals)
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4
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2
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Type 5
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42
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IP65
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3 Poles
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2
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1
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Type 6
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42
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IP65
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6 Poles
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4
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2
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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. |
| Approvals |
LS-300 Series switches are U.L. Recognized – File No. E45168; CSA Listed – 30200. |
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Notes:
1. Units with 50 and 100 VA switches are not UL Recognized or CSA Listed.
2. Other wiring options available. Consult factory.
3. Consult Factory for load information.
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Mounting Types:
Each mounting type can be configured with stem lengths (Lo) and float materials indicated in the table below.
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Type 21
1/8" NPT
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Type 22
1" NPT
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Type 31
3/8"-24 Straight Threads
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Type 32
1-5/16"-12 Straight Threads
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Type 33
5/8"-11 Straight Threads
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Type 41
G1/4" (1/4"-19BSP)
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Type 42
G1" (1"-11BSP)
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Type 51
M12x1.5 Straight Thread
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Type 61
2" O.D. Flange *
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Type 63
Pop flange *
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Type 71†
5/8"-11 Compression Type
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† Type 71 mounting to be used with 3/4" diameter float only.
* Not recommended for pressure applications. |
| Stem and Mounting Material |
Polysulfone, Noryl® |
| Max Length Lo |
20" (50 cm) tolerance of Lo = ±1/16" (2 mm)< /FONT > |
| Mounting Position |
Vertical ± 30° Inclination |