Agency Listings

WFDEXP

Explosion Proof

Waterflow Detector

The System Sensor WFDEXP series is designed to

handle extreme conditions.

Features

New WFD30-2EXP models install in 2˝ hole sizes

•

Designed and approved to operate in hazardous locations

•

NEMA 4 enclosure rating

•

Sensitivity-setting spring mechanism located outside of explosion

•

environment

Sealed retard mechanism

•

Visual switch activation

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Synchronized activation circuit

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Field-replaceable terminal block and retard mechanism

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Only one conduit entrance required for hook-up

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These units are ideal for installation in hazardous locations classified

as follows:

Class I, Groups B, C, D, Division 1 & 2

Class II, Groups E, F, G, Division 1 & 2

Class III, Division 1 & 2

Robust Construction. The WFDEXP series consists of a rugged,

NEMA 4-rated cast aluminum housing. Designed for both indoor

and outdoor use, the WFDEXP series operates across a wide

temperature range, from 32°F to 160°F. Inside, two sets of SPDT (Form

C) synchronized switches are enclosed in a rugged terminal block to

assure reliable performance.

Reliable Performance. The WFDEXP series offers unique features

that assure greater operational reliability. By housing the spring

mechanism separately from the explosion environment, the

sensitivity of the adjustment spring and the detector is protected

at all times. Adding to WFDEXP’s reliability is its sealed retard

mechanism, which prevents contamination by dust and dirt when

the cover is removed.

Simplified Operation. Like all System Sensor waterflow detectors,

the WFDEXP series is designed for easy installation. With its visible

switch activation, the WFDEXP’s retard timing can be verified, even

during noisy conditions.

E200116

C169

3006195

44-00-E

7770-1653:145