AFDT Datasheet, PDF (1/2 Pages) Systemsensor advanced ideas. – Solid State Waterflow Detectors

Accuflow^™ T-Tap
Solid State
Waterflow Detectors
Models Available
AFDT
AFDTH
AFDTA
AFDTHA
Water Flow Detector
Water Flow Detector
Water Flow Detector
(ULC/Candian)
Water Flow Detector
(ULC/Candian)
AFDT
Replacement Parts
WFDW
Cover wrench
546-9000
Cover tamper
switch kit
WFDN4
PRK9
Gasket kit
Paddle Kit
AFDPCBRK
Retard PCB kit
AFDT (cover removed)
Product Overview
Solid state retard assures precise
timing accuracy
Designed for use with 1” NPT
connections
Dipswitch selections simplify
retard settings
Non-polarized, two-wire design
allows connection to a local bell and
conventional or addressable systems
Terminals accommodate up to
12 AWG wire
Synchronized switches activate
both the alarm panel and local
bell simultaneously
Field-replaceable retard assembly
System Sensor’s Accuflow™ T-Tap series is a new line of solid state waterflow
detectors designed for primary signaling in residential systems and branch line
signaling. These models fit 1” NPT tees including: 1”, 1-1/4” and 1-1/2” NPT
threaded ferrous and brass tees; 1”, 1-1/4”, 1-1/2” and 2” copper sweat tees;
1” CPVC tees; and 1-1/2” polybutylene tees. For 2” cast and malleable threaded
tees use 2” paddle (P02-0023-000) provided.
Robust Construction. The Accuflow AFDT model consists of a rugged enclosure for
indoor and outdoor use. Like all System Sensor waterflow detectors, Accuflow mod-
els operate across a wide temperature range, from 32ºF to 120ºF (0°C to 49°C).
Reliable Performance. Accuflow detectors incorporate a solid state retard to ensure
consistently accurate timing. Designed for use within conventional and addressable
fire alarm systems, Accuflow detectors include connections for both the panel or
addressable module, as well as a local bell or notification device.
False Alarm Immunity. The solid state circuitry of the Accuflow series provides
greater timing accuracy over traditional mechanical retard designs. This accuracy
minimizes the risk of false alarms created by pressure surges or air trapped within
the sprinkler system.
Simplified Operation. Accuflow detectors are designed to simplify installation. Wired
like traditional waterflow detectors, the Accuflow series does not require the installer
to run an additional third wire. Two conduit openings permit easy attachment to the
local alarm system.