Series PLS Paddle Level Switch

Weatherproof and Explosion Proof Option, Rotary Paddle Level Control, Top or Side Mounting for Dry Bulk Materials

The Series PLS Paddle Level Switch uses a 1 rpm synchronous motor to rotate a paddle and sense the presence of dry powder or bulk materials. Movement is impeded when product comes into contact with the paddle and the resulting motor torque activates the output switches and stops the motor. The PLS is designed with the industry standard 1-1/4" male NPT connection and mounting flanges.

Product Applications

Mining
Food and beverage
Silos
Hoppers

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Paddle
Flange
Custom Built Products

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

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Model	Description	Usually Ships*	Price	Order
PLS-W-S-1-0-0-0-0 Ships: Next Day Price: $426.00	Paddle level switch, SPDT, weatherproof, 120 VAC power supply.	Next Day*	$426.00	Order
PLS-W-S-1-2-CSH-0-0 Ships: 13-14 Weeks Price: $523.50	Paddle level switch, SPDT, weatherproof, 120 VAC power supply, includes PDL-1 paddle and FLG-CSH flange.	13-14 Weeks*	$523.50	Order
PLS-W-S-1-3-0-0-0 Ships: 13-14 Weeks Price: $479.00	Paddle level switch, SPDT, weatherproof, 120 VAC power supply, includes PDL-3 paddle.	13-14 Weeks*	$479.00	Order

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Specifications

Service:: Dry powder or bulk materials compatible with wetted materials.
Sensitivity:: Minimum material density of 5 lb/ft³ (80 kg/m³), maximum of 200 lb/ft³ (3200 kg/m³).
Wetted Materials:: Paddles: 316 SS. Exposed Shaft: 316 SS. Shaft Seal: PTFE. Mounting Boss: Aluminum. Flexible Coupling: 316 SS. Mounting Flanges: Carbon Steel or 316 SS. Shaft Extension and Shaft Guards: Galvanized Steel or 316 SS.
Temperature Limits:: Standard Construction: Process: -40 to 300°F (-40 to 148.9°C), Ambient: -40 to 185°F (-40 to 85°C); High Temperature: Process: -40 to 500°F (-40 to 260°C), Ambient: -40 to 185°F (-40 to 85°C).
Pressure Limit:: 30 psig (2.07 bar) maximum for .5 micron or larger material.
Power Requirement:: Select by part number: 110-120 VAC, 230 VAC, 24 VAC, 48 VAC, or 12 VDC.
Power Consumption:: Weatherproof models: 5 watts, Explosion-proof models: 3 watts.
Enclosure:: Aluminum, powder coated.
Enclosure Rating:: Weatherproof (W, WH construction): NEMA 4X, Explosion-proof (E, EH construction): NEMA 4X and rated for Class I, Div. 1 & 2, Groups C & D, Div. 1 & 2, Groups E, F, & G.
Switch Type:: SPDT or optional DPDT snap switch.
Electrical Rating:: 15 A @ 120.
Electric Connections:: Screw terminals.
Conduit Connection:: 3/4" female NPT.
Process Connection:: 1-1/4" male NPT. Optional flange.
Indication Light:: Red LED that activates when switch is made or when switch is not made with RL option (not available on Explosion-proof models).
Time Delay Relay Option:: Five field adjustable ranges from 0-1 to 0-31 minutes. (RL option not available, DPDT option not available with 230 VAC time delay).
Weight:: Control head only: 4 lb (1.81 kg).
Agency Approvals:: cUL, UL approved as an auxiliary device or as an auxiliary device for hazardous locations.

Features

Magnetic drive that isolates and completely seals the control head from the process and environment preventing material or dust from entering the control head.
Motor shuts-off when paddle stalls increasing motor life, preventing motor burnout, and decreasing power usage.
Slip clutch design enabled by the magnetic drive that prevents damage to motor and drive mechanism from sudden or excessive loading on the paddle.
Status indication light on weatherproof models.
Screw cover on the enclosure for easy access with no worries about losing bolts or screws.
Modular design to allow field installation of any paddle, flanges, shaft extensions, or shaft guards.
Flexible coupling available for protection of the paddle and drive from side loads, surges or impacts. Recommended for top mount applications with shaft extension and applications with large or heavy materials.

Options

Contact the factory for pricing of shaft extensions, protective shields, and other options. More detailed information available in our Measurement & Control for Powder, Dust, and Bulk Materials Catalog.

Accessories

Model Number	Description	Usually Ships*	Price	Order
PLS-EXT-GS-006	6" galvanized extension.	1-2 Weeks	$42.70	Order
PLS-EXT-GS-012	12" galvanized extension.	1-2 Weeks	$58.90	Order
PLS-EXT-GS-018	18" galvanized extension.	1-2 Weeks	$75.10	Order
PLS-EXT-GS-024	24" galvanized extension.	1-2 Weeks	$91.30	Order
PLS-EXT-GS-036	36" galvanized extension.	1-2 Weeks	$123.70	Order
PLS-EXT-GS-048	48" galvanized extension.	1-2 Weeks	$156.10	Order
PLS-EXT-SS-006	6" stainless extension.	1-2 Weeks	$58.35	Order
PLS-EXT-SS-012	12" stainless extension.	1-2 Weeks	$76.95	Order
PLS-EXT-SS-018	18" stainless extension.	1-2 Weeks	$95.55	Order
PLS-EXT-SS-024	24" stainless extension.	1-2 Weeks	$114.15	Order
PLS-EXT-SS-030	30" stainless extension.	1-2 Weeks	$132.75	Order
PLS-EXT-SS-036	36" stainless extension.	1-2 Weeks	$151.35	Order
PLS-EXT-SS-042	42" stainless extension.	1-2 Weeks	$169.95	Order
PLS-EXT-SS-048	48" stainless extension.	1-2 Weeks	$188.55	Order
FLG-CSF	Carbon steel mounting flange with full coupling.	1-2 Weeks	$54.00	Order
FLG-CSH	Carbon steel mounting flange with half coupling.	1-2 Weeks	$48.00	Order
FLG-SSF	316 SS mounting flange with full coupling.	1-2 Weeks	$154.00	Order
FLG-SSH	316 SS mounting flange with half coupling.	1-2 Weeks	$126.00	Order
PDL-1	Carbon steel paddle with half coupling. Minimum bulk density of 5 lb/ft³ (80 kg/m³).	1-2 Weeks	$53.00	Order
PDL-2	Carbon steel paddle with full coupling. Minimum bulk density of 30 lb/ft³ (481kg/m³).	1-2 Weeks	$50.50	Order
PDL-3	316 SS paddle with half coupling. Minimum bulk density of 30 lb/ft³ (481 kg/m³). Fits through a 1-1/4" coupling eliminating the need for a mounting flange.	1-2 Weeks	$53.00	Order
PDL-4	316 SS paddle with full coupling. Minimum bulk density of 70 lb/ft³ (1122 kg/m³). Fits through 1-1/4" coupling eliminating the need for a mounting flange.	1-2 Weeks	$50.50	Order

Videos

Model Chart

EXAMPLE	PLS	W	S	1	1	CSF	GS	GS	012	FC	Series PLS-W-S-1-1-CSF-GS-GS-012-FC Paddle Level Switch, weatherproof enclosure, SPDT, 110-120 VAC, low density paddle, carbon steel with full coupling, 12" 1/4 NPS galvanized steel shaft extension and protective shield, with flexible coupling.
SERIES	PLS										Paddle Level Switch
ENCLOSURE DESIGN		W E WH EH									Weatherproof Explosion-proof Weatherproof High Temperature Explosion-proof High Temperature
SWITCH TYPE			S D TD1 TD2								SPDT DPDT (dual SPDT switches) DPDT Time Delay, 120 VAC SPDT Time Delay, 230 VAC
POWER SUPPLY				1 2 3 4 5 6 7							110-120 VAC 230 VAC 24 VAC 48 VAC 12 VDC 24 VDC 230 VAC with CE approval (Not valid with E, EH, TD1, TD2)
PADDLE					0 1 2 3 4						No Paddle Low Density Paddle (PDL-1) Medium Density Paddle (PDL-2) Banana Paddle (PDL-3) High Density Paddle (PDL-4)
FLANGE						0 CSH CSF SSH SSF					No Mounting Flange Carbon Steel with Half Coupling (FLG-CSH) Carbon Steel with Full Coupling (FLG-CSF) 316SS with Half Coupling (FLG-SSH) 316SS with Full Coupling (FLG-SSF)
SHAFT EXTENSION MATERIAL							0 GS SS				None 1/4 NPS Galvanized Steel 1/4 NPS 316SS
PROTECTIVE SHIELD MATERIAL								0 GS SS			None 1/4 NPS Galvanized Steel 1/4 NPS 316SS
SHAFT EXTENSION AND SHIELD LENGTH									006 012 018 024 030 036 042 048		None 6 Inch 12 Inch 18 Inch 24 Inch 30 Inch 36 Inch 42 Inch 48 Inch
OPTIONS										FC NL RL SS	Flexible Coupling (CPL-FLX) No Indicator Lights Reversed Light - Light Indication when Paddle Freely Rotates 316SS Housing, Cover, Mounting Boss

Product Literature

Manuals

Service Manual

Catalog Pages

Series PLS Catalog Page

Approvals

Drawings

Questions

Question

What are the two dry product level switch model types? What ranges do they cover? How are they adjusted? How many set-points do they have?

Answer

GSD3DA - gravity (elastomer) suspension, aluminum housing, polyurethane diaphragm, standard 15 amp switch. PSD16A - pneumatic (fabric), suspension, aluminum housing, filter fabric diaphragm, polyester 150 micron permeability, standard 15 amp switch. They can be adjusted to any level. They are adjusted by a screw adjustment. One setpoint available. For additional options, you could look at our CLS2 Series Capacitive Level Switch, TFLS Series Tuning Fork Level Switch, PLS and PLS2 Series Paddle Level Switches.

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