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Rotary Paddle Level Switch

Rotary Paddle Level Switch
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Rotary Paddle Level Switch

Product catalog summary
Introduction
The document outlines the rotary paddle level switch, a device used to detect solid or powdery materials in storage units like tanks and bins. It functions by rotating a paddle, which, when obstructed by material, causes the motor to stall and triggers a micro-switch for alarm or control actions.

Features
The switch includes a rugged sealing ring to prevent dust, adjustable torque for different material densities, automatic motor shutdown to prevent overload damage, and is suitable for small tanks and low-density materials. It comes in adjustable and extendible shaft models with various paddle options.

Structure
The device comprises components such as a torque spring, clutch motor, micro switch, and oil-seal, available in standard, mini, and high-temperature models.

Working Principle
The paddle rotates freely when no material is present. If blocked, the motor stops, and the micro-switch changes state. The torque spring allows torque adjustment based on material density.

Applications
Industries using this device include plastics, chemicals, pharmaceuticals, food and beverage, agriculture, cement, power plants, and incinerators.

Benefits
The device is airtight, suitable for outdoor use, stable, reliable, lightweight, easy to install, and allows maintenance without full removal from the tank.

Specifications
Power options include 110Vac, 220Vac, 240Vac, 24Vac, 24Vdc, with power consumption of 3W or 11W (DC24V). It has a contact capacity of SPDT, 5A/250Vac, a rotary speed of 1 R.P.M., insulation test voltage of 2500V, material density of 0.5 g/cm³, and protection/material rating of IP65 / ADC-12.

Installation and Mounting
Models are available for horizontal and vertical mounting, with specific instructions for high-temperature applications and different paddle shapes. Detailed mounting examples and notices are provided.

Ordering Information
Details include voltage, mounting type, material specific gravity, and tank inlet compatibility. Special models are available for explosion-proof and high-temperature applications.

Additional Specifications
  • Flow and Level Switches: Includes various types like Paddle Flow Switch, Mini Float/Magnetic Float Level Switch, and others.
  • Level Transmitters: Includes Pressure Level Transmitter, Magnetic Float Level Transmitter, and others.
  • Other Devices: Includes Speed Monitor, Microprocessor Based Bargraphic Display Scaling Meter, and others.

Pressure Ratings: PN10, PN16, PN25, PN40.
Thread Types: PT, PF (G), B SP, NPT, Others.

Contact Information
Contact details for FineTek Co., Ltd. and its subsidiaries in Taiwan, China, Singapore, Germany, and the USA are provided.
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Catalog excerpts

Rotary Paddle Level Switch-1

Your Made-To-Order Solutions

 Open the catalog to page 1
Rotary Paddle Level Switch-2

WORKING PRINCIPLE The purpose of the rotary paddle level switch is to detect the presence of solid/powdery material in most kinds of tanks, bins and containers. The unit is usually located through a bin wall at the top, middle or low level of a bin. During normal operation (no material present) a synchronous motor rotates the paddle at RPM. When this paddle rotation is impeded by material, surrounding the paddle, motor will stall and cause the Micro-switch to change state (indicating an alarm or control). 1 Rugged sealing ring prevents dust from infiltrating the housing body along the shaft....

 Open the catalog to page 2
Rotary Paddle Level Switch-3

WORKING PRINCIPLE & TORQUE ADJUSTING CONTROL SWITCH WORKING PRINCIPLE 1. A synchronous turning motor indicates the tank or container’s material isn't obstructing the paddles,C & L [COM & NC] are connected. 2. When the material is obstructing the paddles, C&L [COM & NC] are disconnected, C&H [COM & NO] are connected and the motor's current is cut off. 3. When the material drops away from the paddles and the motor starts again C & L [COM & NC] connect and the cycle has begun once again. TORQUE ADJUSTING MECHANISM AND WIRING 1 Do not tamper with the spring as it may cause the Rotary Paddle to malfunction....

 Open the catalog to page 3
Rotary Paddle Level Switch-4

STANDARD TYPE • Contact capacity : SPDT, 5A/250Vac • Insulation test voltage : 2500V • Connection : 1"PF screw or JIS 2-1/2" xSkgfcm flange SCREW MODEL • Horizontal mounting FLANGE MODEL • Horizontal mounting SHAFT PROTECTIVE TUBE MODEL • Horizontal /Vertical mounting • Standard Length: • Customized lengths available SHAFT LENGTH ADJUSTABLE MODEL • Vertical mounting • Standard Length: • Customized lengths available

 Open the catalog to page 4
Rotary Paddle Level Switch-5

STANDARD TYPE HI-TEMP TYPE SE140A/B/C/D Horizontal mounting Temp. (-20BC ~ 200BC) Weight: 2.1 kg HI-TEMP TYPE PROTECTIVE TUBE TYPE Horizontal /Vertical mounting Operation Temperature (-20BC ~ 200BC) Standard Length (option): f155 L--250mm (2.6 kg) L--500mm (2.9 kg) L--750mm (3.2 kg) PCD130 Special length is made by order HI-TEMP SHAFT LENGTH ADJUSTABLE TYPE SE146A/B/C/D/E Vertical mounting Operation Temperature (-20BC ~ 200BC) Standard Length (option): L– 450~630mm (3 kg) L– 650~1000mm (3.3 kg) L– 760~1200mm (3.5 kg) Special length is made by order CABLE WIRE TYPE SE160A/B/C/D/E Vertical mounting...

 Open the catalog to page 5
Rotary Paddle Level Switch-6

Housing cover code: 0: Aluminum cover 1: Aluminum cover with LED lamp MINI TYPE(Aluminum alloy cover) 1 Housing material : Aluminum alloy 1 Ambient temperature : -40LC ~ 85LC 1 Cable length : 300mm (available for custom length) 1 Material density : 0.3 1 Display status : Green(Working), Red(Stopped) 1 Contact capacity : 5A/250Vac, 5A/30Vdc 1 Rotary speed : R.P.M. 1 IP rating : IP65 HIGH TEMPERATURE TYPE SE3994 Series STANDARD SE3990 Series Operation temperature: -40BC ~ 85BC Paddle material: PC Operation temperature: -40BC ~ 200°C Paddle material: SUS304 HIGH TEMPERATURE SHAFT PROTECTIVE TUBE...

 Open the catalog to page 6
Rotary Paddle Level Switch-7

MINI TYPE(Plastic cover) • Housing material : Plastic cover • Cable length : 300mm (available for custom length) HIGH TEMPERATURE TYPE SHAFT PROTECTIVE TUBE TYPE HIGH TEMPERATURE SHAFT PROTECTIVE TUBE TYPE

 Open the catalog to page 7
Rotary Paddle Level Switch-8

MOUNTING EXAMPLES Regular models such as the SE11should be installed directly on the tank side. Mount at a 35° angle the blade through the tank opening or hole sliding the blade in first. * The SE170 series minimum hole size should be 95mm in diameter. The scimitar model is directly installed on the tank wall method as shown below. (Assuming an arc-shaped tank with a 3/4 "connection) and then screwing it tight. INJECTION MOLDING MACHINES Injection Molding Machine usually require the SE38. Install the Rotary Paddle through a 20mm diameter hole on the tank/silo. Remove the paddle from the device...

 Open the catalog to page 8
Rotary Paddle Level Switch-9

INSTALLATION NOTICES 1. Side mount the sensor at a downward angle of 15° ~20° to decrease the material inflow impact. 2. For high temperature application (more than 70°C), please use the SE149 Series. 3. For SE110~SE140 using a 1" inlet, please apply the scimitar model and screw directly. 4. For SE130, SE146 series have flexible and extendible shafts. 5. Please ensure the lead wire enters the housing from the bottom and the nuts are fastened to secure the device.

 Open the catalog to page 9
Rotary Paddle Level Switch-10

MODEL NO. 119 : Standard model 120 : Shaft protective tube model 130 : Shaft length adjustable model 149 : Hi-temp model 160 : Cable wire model MOUNTING Specification Size for flange or screw D: 1" E: 1-1/2" F: 2" G: 2-1/2" H: 3" PADDLE SHAPES SE110~SE170 A : 100 x30 (WxH) B : 65x80 (WxH) C : 65x120 (WxH) D : 80x80 (WxH) E : 50x30 (WxH) F : Scimitar J : 200x28 (WxH) S : others - : None Note 1. Check the voltage 24Vac, 110Vac, 220Vac or 240Vac, 50/60 Hz. 2. Check the side or top mounting. 3. Check the material specific gravity (S.G.) value. 4. If blockages are frequent or vibrating motors are...

 Open the catalog to page 10
Rotary Paddle Level Switch-11

HOUSING TYPE 7: Ex proof type 8: General type HOUSING COVER 0: Aluminum cover 1: Aluminum cover with LED lamp 2: Plastic cover ※1 and 2 are not available for SE37. Standard Shaft protective tube High temperature High temperature shaft protective tube CONNECTION Size for flange or screw C: 3/4" D: 1" 3 : 1-1/4" E: 1-1/2" F: 2" G: 2-1/2" H: 3" PADDLE SHAPE (mm) G: Cross paddle H: Scimitar paddle I : 100x30 (WxH) K: Folding paddle S: Special -: None H Material: Stainless steel ※500mm per unit ※Standard length 300mm Material: Stainless steel

 Open the catalog to page 11
Rotary Paddle Level Switch-12

EXPLOSION PROOF MODEL • Contact capacity : SPDT, 3A/250Vac • Insulation test voltage : AC 1500Vx 1 minute EXPLOSION PROOF CONNECTION MODEL • Horizontal mounting EXPLOSION PROOF FLANGE MODEL • Horizontal mounting EXPLOSION PROOF ADJUSTABLE SHAFT MODEL • Vertical mounting • Standard Length (option): • Special length is made by • Connect : 1"PF screw or flange 1"~6" • Housing material : AL Alloy, ADC-12 EXPLOSION PROOF SHAFT PROTECTION MODEL • Horizontal /Vertical mounting • Standard Length (option): • Customized lengths available EXPLOSION PROOF HI-TEMP MODEL • Horizontal mounting

 Open the catalog to page 12

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.