WFDE Series

Waterflow Detector

Robust Construction. The WFDE series consists of a rugged, IP54

rated enclosure. Designed for both indoor and outdoor use, the

WFDE series operates across a wide temperature range, from 0°C to

68°C (32°F to 155°F).

Reliable Performance. WFDE models are equipped with tamper-

resistant cover screws to prevent unauthorized entry. Inside, two sets

of SPDT (Form C) synchronized switches are enclosed in a durable

terminal block to ensure reliable performance.

False Alarm Immunity. The WFDE series incorporates a

mechanical retard feature, which minimizes the risk of false alarm

due to pressure surges or air trapped in the sprinkler system. In

addition, the mechanical retard’s unique sealed design is immune

to dust and other contaminants.

Simplified Operation. The WFDE series is designed to simplify

installation. Two conduit openings permit easy attachment to the

local alarm system. The retard mechanism and dual SPDT switches

are field-replaceable.

TE83724

VdS

G4940006

1Z0A7.AH

Scientific Services

Laboratory

afp-836

0786

Agency Listings

System Sensor’s WFDE series is compatible with pipe

diameters ranging from 50mm through 200mm and

can be mounted in a vertical or horizontal position.

Features

Compliant with Construction Products Directive

EC Certificate Number 0786-CPD-40151

WFD30-2E models install in 50.8mm (2”) hole sizes

IP54 rated enclosure

Sealed retard mechanism assures that the retard is not

contaminated by dust and dirt when the cover is removed

Visual switch activation permits installer to accurately set the retard

even under extremely noisy conditions

Rugged, dual SPDT switches are enclosed in a durable terminal

block for added strength

100% synchronization activates both alarm panel and local bell

simultaneously

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