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IDD-II Series Flame Detector
Forney’s IDD-II Series Flame Detector meets the operational flexibility requirements of utilities through
multiple flame detecting and discriminating capabilities.

Product Overview

Features & Benefits

Forney’s Intelligent Dynamic Detector (IDD) II Series

•t L ead S ulfide S ensor
Sensitive to infrared and visible
light radiation prevalent in fuel oil,
coal and lignite flames.

is designed to accurately detect and discriminate the
luminous flames produced by burning oil, coal, and
lignite fuels.
The IDD-II (Filtered) flame detector is typically used
for sensing heavy fuel oil and coal flames. The IDD-IIU
(Unfiltered) flame detector is typically used for sensing
light fuel oil flames. The IDD-IIL (Lignite) flame detector
is specifically designed to sense low flame frequency
produced by lignite and high ash coal flames.
The IDD-II Series is used in conjunction with Forney’s
supporting amplifiers IDD-9000, DR-6101E, RM-IDD and
IDD-IIIA.
The IDD-II’s solid state circuitry amplifies a continuously
changing voltage signal transmitted from the lead
sulfide sensor when flame is sensed. The signal is then
sent to the amplifier by way of a four conductor cable.
The amplifier processes the signal and provides
outputs to the burner management system.
t For

trouble-free

operation,

the

•t D ynamic F lame S ensing C ircuitry
Senses only a dynamic flame
signal, discriminates flame
from hot refractory and other
background conditions.
•t C ompact , D urable A ssembly
The printed circuit board and
sensor are potted within a
cast steel housing providing a
maintenance free product.
•t S implified S ystem M aintenance
Quick disconnect, electrical and
mechanical connections are used
for easy replacement.
•t F iber O ptics
Optional fixtures are available for
fiber optic applications.
•t F actory M utual A pproval
Factory Mutual (FM) approval
means safe operation and lower
insurance rates.

detector

electronics are potted within the cast steel
housing. In addition, the amplifier also initiates a
periodic, electronic self-check of the sensor and
printed circuit board to verify proper operation of
the detector assembly.

Forney Corporation • 16479 North Dallas Parkway, Suite 600 • Addison, TX 75001 • 800-356-7740 • www.forneycorp.com