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Speed Switches

4B's line of speed switches includes: proximity, inductive, zero speed, stop motion and rotech encoders to monitor dangerous belt slip, underspeed or stop conditions on conveyors, bucket elevators and any other shaft driven machinery. Our non-contacting sensors can be used to detect screw conveyor flights, elevator bucket bolts and other moving ferrous targets. Speed switches can be connected to a PLC or to one of 4B’s hazard monitoring systems to provide alarm and/or shutdown of your machinery when dangerous conditions are detected.

View our full Electronics Catalogue here.

 
Updated Version
4B WDA motion alignment sensor

WDA4 Motion Alignment Sensor

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CE

CE
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CE Logo
Electronics Application
Bucket Elevator,
Chain Conveyor
  • Magnetic Proximity Belt Speed and Belt Alignment Sensor
  • Adjustable Sensing Range 25mm to 75 mm
  • LED Indication
  • Mounting Bracket Included
  • ½” NTP Conduit Entry
  • Stainless Steel Construction
  • High Temperature Version Available
  • IP66 Protection
     
New Product
Encoder-Flex 1024

Encoder-Flex 1024

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CE

CE
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CE Logo
  • Monitors shaft speed, angle, or position
  • Outputs: 4-20 mA, Quadrature Pulse (Speed/Relative Rotation), and RS485 Modbus RTU
  • Programmable resolution from 1 to 1024 Pulses per Revolution
  • Compatible with gates with up to 500,000 rotations between closed and open positions
  • Connects directly to control systems (PLC, SCADA, Watchdog, IE-Node, etc)
  • Memorizes shaft position in the case of a power loss
  • Simple magnetic calibration
  • Comprehensive software for access to advanced programming and visualization
  • Sealed stainless steel enclosure
  • LED Status Indicators
M3003 & M3007 Slipswitch

M3003, M3008 & M3007 Slipswitch

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CnEx

CnEx
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Nepsi

CSA

CSA
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CSA logo

CE

CE
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CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator
  • ATEX and IECEx Zone 20 (Dust) and Zone 0 (Gas) Approved
  • Signals underspeed for bucket elevators, conveyors and all rotating machinery
  • Inductive proximity sensor in 30mm diameter housing, which detects rotating metal target
  • 20% underspeed set point
  • 2 wire & 5 wire versions available
  • Easy and reliable calibration procedure by using a magnet
  • Non-contacting & failsafe
  • Compatible with the Whirligig speed sensor mount
M100 Stopswitch

M1003 Stopswitch

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CnEx

CnEx
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Nepsi

CSA

CSA
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CSA logo

CE

CE
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CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator,
Chain Conveyor,
Screw Conveyor
  • 24-240 VAC/VDC multi voltage power supply
  • 2-wire
  • IP66 rated
  • M18 x 1.0 ISO threaded nylon body
  • Green and Blue LEDs showing output state
  • 6 mm detection range
  • No calibration needed
  • 4s start up delay
New Product
4B  Milli speed switch (ATEX version)

Milli-Speed Switch

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CnEx

CnEx
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Nepsi

CE

CE
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CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator
  • 4 - 20 mA Output
  • Simple Magnetic Calibration
  • Loop Powered (2 Wire)
  • Totally Sealed Construction: Submersible
  • Easy Installation with Whirligig® Sensor Mount
  • SpeedMaster™ Compatible for Accurate Testing
     
M800 Elite speed switch

M800 Speed Switch

Certification

CSA

CSA
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CSA logo

CE

CE
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CE Logo

GOST-R

GOST-R
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gost-r-mark
Electronics Application
Belt Conveyor,
Bucket Elevator
  • Microprocessor controlled speedswitch
  • Signals underspeed conditions for bucket elevators, conveyors and all rotating machinery
  • Inductive proximity sensor, in DIN style housing, which detects a rotating metal target
  • Dual set-points at 10% and 20% underspeed
  • Non-contacting & failsafe
  • Compatible with the Whirligig speed sensor mount
Superseded
4B WDA motion alignment sensor

WDA3 Motion Alignment Sensor

Certification

UKEx

UKEx
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CSA

CSA
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CSA logo

CE

CE
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CE Logo
Electronics Application
Bucket Elevator,
Chain Conveyor
  • Magnetic Proximity Belt Speed and Belt Alignment Sensor
  • Detects Moving Steel Ferrous Targets
  • Adjustable Sensing Range of 25 – 75mm
  • Not Affected by Material Build Up
  • Stainless Steel Construction
  • High Temperature Version Available
4B Whirligig shaft sensor mount

Whirligig®

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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CnEx

CnEx
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Nepsi

CE

CE
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CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator
  • Fully Guarded Target for Easy Mounting of Motion Sensors
  • For DIN Style and Standard Cylindrical Inductive Sensors
  • Easy Installation - Only Requires M12 Tapped Hole in the Machines Shaft or Use a Mag-Con™ for Magnetic Connection
  • Available with 1, 2, 4 and 8 Targets per revolution
  • Works with All 4B Speed Switches and Inductive Sensors
Whirligig heavy duty shaft sensor mount

Heavy Duty Whirligig®

Certification

CE

CE
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CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator
  • Heavy duty shaft sensor mount
  • Manufactured in stainless steel casing for heavy duty usage
  • Suitable for all Braime sensors & other industry standard cylindrical sensors
  • Not affected by shaft or machine vibration
  • 2/4 pulse target (as standard)
  • Easy to install, safe
Rotech shaft encoder

Rotech Shaft Encoder - Polypropylene

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CSA

CSA
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CSA logo

CE

CE
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CE Logo
Electronics Application
Belt Conveyor
  • Rotating shaft monitor
  • Polypropylene housing
  • For light duty applications, IP66
  • Provides information on shaft speed, direction, position or revolution
  • For conveyors, elevators, mixers, fans, pumps, grinders & other mechanical handling systems
  • Compatible with the "Magcon" quick-connect device
Rotech shaft encoder - aluminium

Rotech Shaft Encoder - Aluminium

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CSA

CSA
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CSA logo

CE

CE
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CE Logo
  • Rotating shaft monitor
  • Aluminium housing
  • Provides information on shaft speed, direction, position or revolution
  • For conveyors, elevators, mixers, fans, pumps, grinders & other mechanical handling systems
  • Heavy duty versions - suitable for the most severe industrial environments, IP65
  • Compatible with the "Magcon" quick-connect device
Rotech shaft encoder - stainless steel

Rotech Encoder - Stainless Steel

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CSA

CSA
Image
CSA logo

CE

CE
Image
CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator
  • Rotating shaft monitor
  • 304/316 stainless steel housing
  • Provides information on shaft speed, direction, position or revolution
  • For conveyors, elevators, mixers, fans, pumps, grinders & other mechanical handling systems
  • Ultra heavy duty version - suitable for the most severe industrial environments
  • IP67
Rotech wheel encoder

Rotech Wheel Encoder

Certification

ATEX

ATEX
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ATEX Logo

UKEx

UKEx
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IECEx

IECEx
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IECExv3

CSA

CSA
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CSA logo

CE

CE
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CE Logo
Electronics Application
Belt Conveyor
  • Heavy-duty belt speed monitor
  • Monitors belt speed, slip & distance
  • Totally enclosed & self contained trailing arm running on return side of conveyor belt
  • Maintenance free for maximum reliability
  • Non standard wheel diameters available
  • 1 to 1,000 pulses per revolution
  • Multiple Outputs
  • Intrinsically safe option available
  • -25 to +100 deg Celsius versions
  • IP67

 

Superseded
M100 Stopswitch

M100 Stopswitch

Certification

CSA

CSA
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CSA logo

CE

CE
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CE Logo
Electronics Application
Belt Conveyor,
Bucket Elevator
  • Stopped Motion Monitor
  • Inductive Proximity Sensor
  • Single Trip Set Point
  • Totally Sealed Construction (Submersible)
  • Non-Contacting and Fail-Safe
Superseded
M300 slipswitch underspeed sensor

M300 Slipswitch

Certification

CSA

CSA
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CSA logo

CE

CE
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CE Logo
  • Microprocessor controlled underspeed monitor
  • Signals underspeed for bucket elevators, conveyors and all rotating machinery
  • Inductive proximity sensor in 30mm diameter housing, which detects rotating metal target
  • Single set-point ~ 20% underspeed 2 wire & 5 wire versions available
  • Non-contacting & failsafe
  • Compatible with the Whirligig speed sensor mount