WE Anderson Series L4 FLOTECH ® FLOAT SWITCH
Rugged and reliable the Series L4 Flotect® Level switch operates automatically to indicate tank level. Perfect for starting or stopping pumps, opening or closing valves, or actuate level alarm signals. A unique magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm. Float arm hinge design limits the arm angle to prevent vertical hangup.
• Leak proof body machined from bar stock
• Choice of floats dependent on maximum pressure and specific gravity
• Weatherproof, designed to meet NEMA 4
• Explosion-proof (listings included in specifications)
• Installs directly and easily into tank with a thredolet or flange (see application drawings)
• Electrical assembly can be easily replaced without removing the unit from the installation so that the process does not have to be shut down
• Horizontal installation or optional top mount vertical installation
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| Service | Liquids compatible with wetted materials | |
| Wetted Materials | ||
| Float and Rod | 316 SS | |
| Body | Brass or 316 SS standard | |
| Magnet Keeper | 430 SS standard, 316 SS or Nickel optional | |
| Temperature Limits | 4 to 275°F (-20 to 135°C) standard, MT high temperature option 400°F (205°C) [MT option not UL, CSA, ATEX, or SAA] | |
| Pressure Limit | Brass body 1000 psig (69 bar), 316 SS body 2000 psig (138 bar). Standard float rated 100 psig (6.9 bar). For other floats see options | |
| Enclosure Rating | Weatherproof and Explosion-proof. Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX 0344 II 2 G EEx d IIB T6 -20°C≤Tamb≤75°C | |
| EC-Type Certificate No. | KEMA 03 ATEX 2383 | |
| SAA | Exd II C T6 (T amb = 60°C). IP66 C1 I, Zone I. Also FM approved | |
| Switch Type | SPDT snap switch standard, DPDT snap switch optional. | |
| Electrical Rating | UL, FM, ATEX and SAA models: 10A @ 125/250 VAC (V~). CSA models:5A @ 125/250 VAC (V~); 5A res., 3A ind. @ 30 VDC (V ). MV option: 1A @ 125 VAC (V~); 1A res., .5A ind. @ 30 VDC (V ). MT option: 5A @ 125/250 VAC (V~). [MT and MV option not UL, CSA, FM, ATEX or SAA] | |
| Electrical Connections | UL and CSA models: 16 AWG, 6˝ (152 mm) long. ATEX and SAA unit: terminal block | |
| Process Connection | 1-1/2˝ male NPT standard, 2-1/2˝ male NPT required for optional floats | |
| Mounting Orientation | Horizontal installation standard, optional vertical top mount | |
| Weight | 4 lb 9 oz (2.07 kg) | |
| Dead Band | 3/4˝ (19 mm) for standard float | |
| Specific Gravity | 0.7 minimum with standard float. For other floats see options | |
| Agency Approvals | UL, CSA, FM, CE and ATEX | |
