WDA3 - NEW ALIGNMENT SENSOR FOR BUCKET
ELEVATORS ATEX APPROVED FOR ZONES 20, 21
The WDA3 is a new misalignment sensor which has been
designed to detect steel elevator buckets, from the side
or the front of elevator leg, as well as steel bolts used to
attach non-metallic buckets to the elevator belt, by sensing
from the back of the belt.
The WDA3 is a fail-safe magnetic sensor, which is unaffected by
dust or product build up. It continuously monitors the moving elevator,
with visual indication by an LED.
A powerful sensors, with a 50-100 mm range depending on the
size of target, the WDA3 sensor is equally suited to elevators with
steel and plastic buckets (by using bolt head as target). It can also
suit stainless buckets. - Please consult our 4B engineers for more
The WDA3 sensors can be linked either directly to a PLC or - for
total security - to an independent control unit, such as the A400 Elite,
B400 Elite or the Watchdog Elite from 4B, which are themselves
ATEX approved for zones 21 and 22.