PLS2 Paddle Level Switch

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customers and current employees as a resource only. They may not be reproduced, published, or

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©Copyright 2011 Dwyer Instruments, Inc.

Theory of Operation

• The paddle is installed through the wall of a

vessel so that it comes in contact with the

bulk media

• An electric motor in the control spins the

paddle. As the media builds up the paddle is

impeded from spinning

• When the paddle stops spinning the motor

then rotates activating the output switch

Theory of Operation

• The motor then turns off

• When the material no longer impedes the

paddle a spring mechanism reactivates the

motor, and returns the switches to the normal

position

• The paddle then starts spinning again

Specifications

• Temperature Limits:

Process: -25 °C to 80°C Ambient: -4°C to 60°C

• Pressure Limit: 0.7 BAR

• Power Options: 120vac, 230vac or 24vdc

• Electrical Rating: 5amp @ 250vac

3amp @ 24vdc

• Adjustable Paddle Sensitivity

• 1-1/4” NPT Process Connection

• PLS2 comes with a paddle

• CE and FM approved

Paddle Sensitivity Adjustment

Mounting

Accessories Paddles

• PLS2-PL1 - Double Sided Spring Paddle

• PLS2-PL2 - Single Sided Spring Paddle

Extensions

• PLS2-EX1 - 8.5˝ Shaft Extension

• PLS2-EX2 - 19.6˝ Shaft Extension

• PLS2-EX3 - 39.4˝ Shaft Extension

• PLS2-EX4 - 78.7˝ Shaft Extension

Mounting Flanges

• FLG-CSH – Half Coupling Mounting Flange

• FLG-CSF – Full Coupling Mounting Flange

Application Products

• Silica Sand

• Foundry Sand

• Wood Chips

• Metal Chips

• Peanuts

• Resin

• Sawdust

• Soil

• Rocks

• Calcium Dust

• Regrind

• Malt

• Limestone

• Pre-Mix

Ingredients

• Granulates

• Animal Feed

• Pellets

• Rubber

• Coal

• Clays

• Grain

• Rawhide

• Fertilizer

• Cement

Applications

Plastic processing

Applications

Textile

Machine

Applications

PVC Powder

Mixer

Applications

Cement Silo

Applications

Grain Hopper

Pneumatic Conveying

• Powder or bulk materials are transported through the system by pressure. The material flows from the storage silo to the receiving bins. The PLS indicates level at each station.

Conveying

• Here the PLS is

controlling the inlet

or outlet conveying

system to keep the

silo filled.

Questions

To order a free catalog or for more information contact;

Dwyer Instruments, Inc., P.O. Box 373,

Michigan City, IN., 46361

Telephone: (800) 872-9141 or (219) 879-8000

Fax: (219) 872-9057

Internet address: www.dwyer-inst.com

E-mail: info@dwyer-inst.com