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IDD AMPLIFIER

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It has a wide range of

tuning capabilities and output contacts that make it especially popular in

the multi burner application. The IDD amplifier is available as a rack

mount (RM-IDD) or panel mount (PM-IDD IIIA) and compatible with a

variety of Forney flame detectors, making it suitable for coal, oil or

natural gas applications.

The primary objective of any flame detector system is to detect

the presence or absence of a target flame inside an enclosed

furnace or combustion chamber. The challenge for most

detectors is the ability to discriminate one burner flame from

another. The Forney IDD flame detector amplifier has a superior

capability to do just that.

The output of the Forney IDD detector, when viewing a

flame, is an analogue signal with a multitude of frequencies. The

IDD amplifier receives this signal and has the capability of

selecting one of many discrete frequencies which best

represents the "flame on" condition. This unique tuning feature

allows the IDD to provide repeatable "flame on" and "flame off"

status, independent of the fuel burned, burner firing rate, boiler

load or number of burners in service. To further refine the

tuning a "sensitivity" or gain adjustment potentiometer is

available as well as multiple filter quality factor ("Q") settings*.

Finally, as with all Forney flame detector amplifiers, two

separate sensitivity settings (A or B) allow for switching from

one to another, if boiler operating conditions require it.

* “Q” is a relative gain factor at the selected discrete frequency of the

amplifier, programmable within the amplifier.

• FLAME DISCRIMINATION–

achieved by selecting the peak

flame frequency. Many dis-

crete choices are available

along with multiple filter “Q”

factor settings.

• UPGRADE CAPABILITY–

Amplifier is compatible with all

versions of IDD-II and IDD-UV

detectors.

• PANEL OR RACK MOUNT –

The self contained panel mount

is suitable for smaller quan-

tities of detectors while the

rack mount is best for large

quantities.

• SIMPLIFIED TROUBLE

SHOOTING – LED status

displays

indicate amplifier

operating functions.

• ANALOG INTENSITY –

separate

flame intensity

outputs of 0-10 vdc, 4-20 mA

for each detector input.

• BUILT IN SAFETY –

Electronic checking

is initiated

every 2 minutes to ensure that

detector circuits respond to an

actual loss-of-flame condition.

FLAME DETECTORS

RM-IDD Amplifier

PM-IDD IIIA Amplifier

1 2

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Pagina 1 - PM-IDD IIIA Amplifier

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Pagina 2 - IDD AMPLIFIER

Forney Corporation3405 Wiley Post RoadCarrollton, TX 75006 USATel: 972.458.6100Fax: 972.458.6650www.forneycorp.comTECHNICAL BULLETINPUBLICATION#404005

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