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PROXIMITY

PROXIMITY is a brand specializing in industrial level-sensing equipment, particularly paddle-type level switches and associated accessories. The product line centers on the PLS-W-S series of paddle level switches, which are electromechanical devices used to detect the presence or absence of bulk solids or liquids in bins, hoppers, and tanks. These switches operate on a rotating paddle principle: when material contacts the paddle, rotation stalls, triggering a SPDT switch output. The PLS-W-S-1-0-0-0-0 model, for example, is rated for 15 A at 120/230 V AC and 5 A at 24 V DC, with a NEMA 4X enclosure rating suitable for washdown and corrosive environments. The brand also offers a range of replacement paddles—including single-sided, double-sided, and tri-paddle designs—to accommodate different material densities. The PDL-1 tri-paddle is specified for minimum bulk densities of 5 lb/cu ft (80 kg/cu m), while the PDL-2 handles denser materials starting at 30 lb/cu ft (481 kg/cu m). Mounting hardware includes full and half coupling flanges in carbon steel (FLG-CSF, FLG-CSH) and 316 stainless steel (FLG-SSH), providing flexibility for various vessel wall thicknesses and process connection requirements. Spring paddles (PLS2-PL1, PLS2-PL2) offer IP66 ingress protection and are designed for applications where paddle flexibility is needed to avoid damage from material impact. 3G Electric stocks PROXIMITY paddle level switches, spring paddles, coupling flanges, and replacement paddles, supporting plant engineers and maintenance managers with components that meet NEMA 4 or 4X standards. The product range is applicable across industries handling dry bulk solids—such as grain, cement, plastics, and aggregates—where reliable point-level detection is required. All items are available for global shipment, with technical specifications provided to facilitate selection based on process connection type (NPT male), enclosure rating, and material compatibility.

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About PROXIMITY

PROXIMITY is a brand specializing in industrial level-sensing equipment, particularly paddle-type level switches and associated accessories. The product line centers on the PLS-W-S series of paddle level switches, which are electromechanical devices used to detect the presence or absence of bulk solids or liquids in bins, hoppers, and tanks. These switches operate on a rotating paddle principle: when material contacts the paddle, rotation stalls, triggering a SPDT switch output. The PLS-W-S-1-0-0-0-0 model, for example, is rated for 15 A at 120/230 V AC and 5 A at 24 V DC, with a NEMA 4X enclosure rating suitable for washdown and corrosive environments. The brand also offers a range of replacement paddles—including single-sided, double-sided, and tri-paddle designs—to accommodate different material densities. The PDL-1 tri-paddle is specified for minimum bulk densities of 5 lb/cu ft (80 kg/cu m), while the PDL-2 handles denser materials starting at 30 lb/cu ft (481 kg/cu m). Mounting hardware includes full and half coupling flanges in carbon steel (FLG-CSF, FLG-CSH) and 316 stainless steel (FLG-SSH), providing flexibility for various vessel wall thicknesses and process connection requirements. Spring paddles (PLS2-PL1, PLS2-PL2) offer IP66 ingress protection and are designed for applications where paddle flexibility is needed to avoid damage from material impact. 3G Electric stocks PROXIMITY paddle level switches, spring paddles, coupling flanges, and replacement paddles, supporting plant engineers and maintenance managers with components that meet NEMA 4 or 4X standards. The product range is applicable across industries handling dry bulk solids—such as grain, cement, plastics, and aggregates—where reliable point-level detection is required. All items are available for global shipment, with technical specifications provided to facilitate selection based on process connection type (NPT male), enclosure rating, and material compatibility.

Common Applications

  • Grain storage silos — PROXIMITY PLS-W-S paddle level switch for high-level detection of bulk grains
  • Cement production — PROXIMITY PDL-2 tri-paddle for point-level sensing in dense powder hoppers
  • Plastics compounding — PROXIMITY PLS2-PL2 double-sided spring paddle for pellet level monitoring
  • Aggregate handling — PROXIMITY FLG-CSF full coupling flange with PLS-W-S switch for stone bin level control
  • Food processing — PROXIMITY PDL-1 tri-paddle for low-density flour or sugar level detection
  • Wastewater treatment — PROXIMITY PLS2-PL1 single-sided spring paddle for sludge level indication in tanks

Frequently asked questions

Common questions about PROXIMITY from 3G Electric.

What is the operating principle of a PROXIMITY paddle level switch?

A PROXIMITY paddle level switch uses a rotating paddle that extends into a vessel. When the material being monitored reaches the paddle, it stalls the rotation. This stall condition is detected by the switch mechanism, which then actuates an SPDT output to signal a high or low level. The switch resets when the material level drops and the paddle is free to rotate again.

What are the differences between the PROXIMITY PDL-1 and PDL-2 tri-paddles?

The PDL-1 tri-paddle is designed for materials with a minimum bulk density of 5 lb/cu ft (80 kg/cu m), making it suitable for lighter powders or flakes. The PDL-2 tri-paddle requires a minimum bulk density of 30 lb/cu ft (481 kg/cu m), intended for denser granular or pelletized materials. Both paddles are compatible with the PLS-W-S-1-3-0-0-0 switch model.

What enclosure ratings are available for PROXIMITY paddle level switches and spring paddles?

The PROXIMITY PLS-W-S-1-0-0-0-0 paddle level switch carries a NEMA 4X rating, providing protection against corrosion, washdown, and dust ingress. The spring paddle models PLS2-PL1 and PLS2-PL2 are rated NEMA 4 and IP66, suitable for outdoor or wet environments but not necessarily corrosive atmospheres.

Which PROXIMITY coupling flanges are available in 316 stainless steel?

The PROXIMITY FLG-SSH half coupling flange is made from 316 stainless steel. It is designed for use with the PLS-W-S-1-3-0-0-0 paddle level switch. Carbon steel options include the FLG-CSF full coupling flange and the FLG-CSH half coupling flange.

Can PROXIMITY spring paddles be used with any paddle level switch?

PROXIMITY spring paddles (PLS2-PL1 single-sided and PLS2-PL2 double-sided) are designed as replacement paddles for specific switch models. They feature a male process connection and are rated IP66/NEMA 4. Compatibility should be verified against the switch model's paddle mounting specifications.

Does 3G Electric supply PROXIMITY products?

Yes — 3G Electric (S) Pte. Ltd. supplies PROXIMITY products. We stock the PROXIMITY catalog and supply genuine factory-original products with full manufacturer warranty and technical support.