Flotect Level Switches
Series L10 FLOTECT® Mini-Size Level Switch
Easy In-Wall or External Installation — Specific Gravities as Low as 0.5
Series L10
The Mini-Size Flotect Series L10 Level Switches combine low cost with top quality materials and construction for great value and years of reliable liquid level control. Wide media compatibility is assured with a choice of brass or stainless steel bodies and external tees; polypropylene or stainless steel floats.
All Series L10 controls feature a hermetically sealed, magnetically actuated SPST reed switch encapsulated in a polypropylene housing. Units are quickly and easily adjusted for your choice of normally open or normally closed operation — just loosen two screws and instantly slide the switch assembly to the action required.
Three types of floats are offered to accommodate liquids with specific gravities as low as 0.5; maximum pressures to 2000 psig (137.8 bar). These controls are UL recognized and CSA listed.
Series L10 Features
- Hermetically sealed, magnetically actuated SPST reed switch encapsulated in a polypropylene housing
- Field adjustable for Normally Open (NO) or Normally Closed (NC) — just loosen two screws and slide the switch assembly
- N.O. and N.C. markings clearly visible for easy configuration
- Switch housing located outside the process media — switch replacement without interrupting process flow
- Wide media compatibility: choice of brass or stainless steel bodies and external tees; polypropylene or stainless steel floats
- Three float types accommodate specific gravities as low as 0.5
- Maximum pressures to 2000 psig (137.8 bar) on 303 SS body models
- Two basic configurations: direct side mounting (1″ NPT male) or external tee mounting
- UL recognized and CSA listed
Series L10 Specifications
| Service | Compatible liquids. |
| Wetted Materials | Float: Solid Polypropylene or 304 SS. Body: Brass or 303 SS. Magnet: Ceramic. External Float Chamber (Tee): None, Brass, or 304 SS. Other (Lever Arm, Pin, Spring, etc.): 301 SS. |
| Temperature Limit | 200°F (93°C). |
| Maximum Pressure | See model chart. Up to 2000 psig (137.8 bar) on 303 SS body models. |
| Switch | Hermetically sealed single pole, single throw (SPST) reed switch. Field adjustable between normally open and normally closed. |
| Electrical Ratings | 1.5A @ 24 VDC resistive; 0.001A @ 200 VDC resistive; 0.5A @ 120 VAC. |
| Conduit Connection | 1/8″ male NPT. |
| Process Connection | 1″ male NPT standard (sidewall mount). 1″ female NPT on models with external float chamber. Optional: 1-1/4″, 1-1/2″, or 2″ NPT. |
| Mounting Orientation | Horizontal with index arrow pointing down. |
| Weight | Approximately 9 oz (0.255 kg) without external float chamber. 2.25 lb (1.02 kg) with external float chamber. |
| Switch Enclosure | Polypropylene. |
| Wire Leads | 22 AWG x 18″ (460 mm), exit through 1/8″ male NPT threads. |
| Agency Approvals | UL recognized and CSA listed. |
Available Models
| Model | Body | Description |
|---|---|---|
| L10-B-3-A | Brass | Mini-size level switch, 304 SS cylindrical float, side wall mounting, max. pressure 200 psig (13.8 bar), min. S.G. 0.5. |
| L10-B-3-B | Brass | Mini-size level switch, polypropylene spherical float, brass tee, max. pressure 250 psig (17.2 bar), min. S.G. 0.9. |
| L10-B-3-C | Brass | Mini-size level switch, 304 SS spherical float, side wall mounting, max. pressure 350 psig (24.1 bar), min. S.G. 0.7. |
| L10-B-3-H | Brass | Mini-size level switch, 304 SS spherical float, brass tee, max. pressure 250 psig (17.2 bar), min. S.G. 0.7. |
| L10-B-3-O | Brass | Mini-size level switch, polypropylene spherical float, side wall mounting, max. pressure 1000 psig (69 bar), min. S.G. 0.9. |
| L10-S-3-A | 303 SS | Mini-size level switch, 304 SS cylindrical float, side wall mounting, max. pressure 200 psig (13.8 bar), min. S.G. 0.5. |
| L10-S-3-C | 303 SS | Mini-size level switch, 304 SS spherical float, side wall mounting, max. pressure 350 psig (24.1 bar), min. S.G. 0.7. |
| L10-S-3-L | 303 SS | Mini-size level switch, 304 SS spherical float, 304 SS tee, max. pressure 350 psig (24.1 bar), min. S.G. 0.7. |
| L10-S-3-O | 303 SS | Mini-size level switch, polypropylene spherical float, side wall mounting, max. pressure 2000 psig (137.8 bar), min. S.G. 0.9. |
| L10-S-3-S | 303 SS | Mini-size level switch, polypropylene spherical float, 304 SS tee, max. pressure 2000 psig (138 bar), min. S.G. 0.9. |
Change 3 in model number to 4 for 1-1/4”, 5 for 1-1/2”, or 6 for 2” process connection.