Hastighetsvakter

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.

 

M3003, M3008 & M3007 Slipswitch

Certification:

ATEX

ATEX
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CnEx

CnEx
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CE

CE
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IECEx

IECEx
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  • 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

M800 Speed Switch

Certification:

CSA

CSA
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GOST-R

GOST-R
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CE

CE
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  • 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

Whirligig®

Certification:

CE

CE
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  • 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

Rotech Wheel Encoder

Certification:

ATEX

ATEX
Bild

CSA

CSA
Bild

CE

CE
Bild

IECEx

IECEx
Bild
  • 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

 

M300 Slipswitch

Certification:

ATEX

ATEX
Bild

CSA

CSA
Bild

CE

CE
Bild

IECEx

IECEx
Bild
  • 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