WDA4 High Power Extended Range Magnetic Proximity Sensor

19 june 2026

WDA4 High Power Extended Range Magnetic Proximity Sensor

APPLICATION

Non-contacting extended range magnetic proximity sensor, not affected by dust or material build up, used to detect moving ferrous material up to 75mm away from the sensor

METHOD OF OPERATION

The WDA sensor is designed for use with bucket elevators to detect the buckets in order to measure speed and alignment. It can also detect screw conveyor flights, and ferrous bolts when attached to non-ferrous buckets. A more specialized use of the WDA sensor is for broken/slack chain detection. The sensor is used in conjunction with a PLC or with 4B's Watchdog™ Elite or A400 Elite control units. Two output signals are provided: one signal is a pulse output, representing each bucket detected: the second signal is a continuous output when moving buckets are detected. The continues output can be wired normally energized or normally de-energized (please see manual).

FEATURES

► 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

PART NUMBERS/ACCESSORIES

► WDA4V342AI WDA4 Standard Sensor, with earth stud

► HTAS1V34 WDA High Temperature Sensor

► WDAMB Sensor Mount (Included with Sensor)