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APPLICATION

The Pyrotector Model 30-3003 Explosion-Proof

Smoke Detector is a sensitive yet rugged, state-of-

the-art protection device that is designed for classi-

fied areas in hazardous industrial and commercial

locations. The detector is designed to operate effec-

tively with both slow smoldering and fast burning

fires. Typical applications include:

• Combustible storage facilities

• Munitions manufacturing

• Volatile chemical storage

• Chemical processing plants

• Petroleum refineries

• Turbine enclosures.

DESCRIPTION

The photoelectric smoke detector uses a solid state

infrared emitting diode (IRED) and a light sensing

photovoltaic cell arranged in a labyrinth assembly.

The labyrinth permits free access to smoke but

restricts external light. Because of its critical function

to the operation of the detector, each IRED is select-

ed with extreme care and is subjected to rigorous

pre-production testing to ensure long-term reliability

and performance.

During normal operation (no smoke), the detector

samples the air approximately every four seconds for

a period of less than one millisecond. The photo-

voltaic smoke cell, which is placed at an angle to the

pulsed invisible light source, is sensitive to the

infrared light in the specified frequency emitted by

the IRED light source and is designed to receive a

signal only when the pulsed IRED source is activat-

ed. See Figure 1.

When smoke enters the chamber, the light from the

IRED reflects off the smoke particles and reaches the

photovoltaic smoke cell. When the amount of light

reflected by smoke reaches the factory set threshold

level, the smoke alarm circuit is actuated.

Detector Electronics Corporation 2000

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N @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ) X ?

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Explosion-Proof Smoke Detector

The detector will respond to a slow smoldering fire

when smoke in the chamber reaches the pre-set sen-

sitivity setting, typically 2.3%.

If a fast burning fire should occur, including fires in

flammable liquids and other materials such as plas-

tics that generate black smoke, the abnormally rapid

movement of smoke into the detection chamber is

sensed by a special rate compensating circuit. An

increase in smoke within the detection chamber that

exceeds a pre-set rate causes the rate compensation

circuit to increase the intensity of the light source,

which increases detector sensitivity. If the smoke

continues to build at this rate, an amplifier circuit is

triggered and the unit generates an alarm. If not, the

detector reverts to normal sensitivity.

ALARM

LED

LENS

SMOKE CHAMBER

Figure 1—Cross Section of Sensing Chamber Assembly

8/00

INSTRUCTIONS

Model 30-3003

PHOTOVOLTAIC

SENSOR CELL

B1178

95-8366-03

LENS

IRED

LIGHT

SOURCE

Need help?

Do you have a question about the 30-3003 and is the answer not in the manual?

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Summary of Contents for Pyrotector 30-3003

Page 1 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? Explosion-Proof Smoke Detector Model 30-3003 APPLICATION The Pyrotector Model 30-3003 Explosion-Proof Smoke Detector is a sensitive yet rugged, state-of- the-art protection device that is designed for classi- fied areas in hazardous industrial and commercial locations.
Page 2 AUXILIARY ALARM RELAY CONTACT RATING— FAILSAFE OPERATION 2.0 amperes at 30 vdc, Form C, SPDT. To ensure reliable operation, the Model 30-3003 is JUNCTION BOX— equipped with self-checking circuitry. A regulation Body material: Copper-free aluminum.
Page 3 5-5/16 INCHES (135 MM) 2-7/16 INCHES (62 MM) 120° 5/32 INCH DIA. (3) 4-1/2 INCHES (114 MM) 12-3/4 INCHES (325 MM) 3-1/2 INCHES (89 MM) A1967 8-1/16 INCHES (205 MM) Figure 2—U5005 Dimensions in Inches (MM) MOUNTING THE DETECTOR YELLOW YELLOW VIOLET TO DETECTOR...
Page 4: Device Repair And Return
Prior to returning devices or components, contact NOTE Detector Electronics so that a Service Order number The Model 30-3003 is not designed to be serviced can be assigned. A written statement describing the or repaired in the field. Disassembly of the detec- malfunction must accompany the returned device or tor in the field will void the warranty.

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Summary of Contents for Pyrotector 30-3003

Page 4: Device Repair And Return