FIre-LITe 30-3003 Explosion-Proof Smoke Detector Owner’s Manual
- June 9, 2024
- Fire-Lite
Table of Contents
30-3003
Explosion-Proof Smoke Detector
Conventional Initiating Devices
DF-60483:B1 • F-920
General
The Pyrotector Model 30-3003 Explosion Proof Smoke Detector is a sensitive yet rugged protection device that is designed for use in hazardous industrial and commercial locations. The detector is designed to operate effectively with both slow smoldering and fast burning fires.
Features
- Rugged construction.
- Self checking and compensating circuitry maintains desired sensitivity.
- Heightened sensitivity triggered when smoke is increasing, but has not yet reached the preset sensitivity setting.
- Form A (SPST) N.O. contacts for connection to alarm out- put circuitry.
- SPST N.C. contacts for supervision of input power.
- 2.3% fixed sensitivity.
Applications
- Combustible storage facilities.
- Munitions manufacturing.
- Volatile chemical storage.
- Chemical processing plants.
- Petroleum refineries.
- Turbine enclosures.
Construction & Operation
The photoelectric smoke detector uses a solid-state infraredemitting 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 selected with extreme care and is subjected to rigorous preproduction
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 photovoltaic
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 activated. See “Cross Section of Sensing Chamber Assembly” at
top of opposite column.
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. The detector will respond to a slow smoldering fire when
smoke in the chamber reaches the preset sensitivity setting, typically 2.3%.
If a fast-burning fire should occur, including fires in flammable liquids and
other materials such as plastics that generate black smoke, the abnormally
rapid movement of smoke into the detection chamber is sensed by a special
rate-compensating
Cross Section of Sensing Chamber Assembly
circuit. An increase in smoke within the detection chamber that exceeds a
preset 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. In
normally smoky atmospheres, the detector will not go into alarm as long as the
concentration is less than the fixed sensitivity of the detector. This results
in a sensitive and positive response with a very low potential for unwanted
alarms. The main enclosure of the detector contains the electronic circuitry,
alarm relay, and supervision relay.
Fail-safe Operation. To ensure reliable operation, the Model 30-3003 is
equipped with self-checking circuitry. A regulation photodiode, which is
matched to the smoke detection circuit, continuously monitors the output
intensity of the IRED and adjusts it as necessary to compensate for an
accumulation of dust or other contaminants, or any other variation that can
occur with temperature and time. A power supervision relay in the detector
provides a trouble output signal in the event of an input power failure. The
detector uses extensive filtering against RF and transient interference. In
addition, there is a two-second time delay before an alarm is generated. The
printed circuit board inside the detector is coated to minimize the
possibility of problems caused by moisture accumula- tion.
Detector Outputs. The detector provides a set of Form A (SPST) N.O.
contacts for connection to the alarm output circuitry and a set of SPST N.C.
contacts for supervision of input power. An auxilliary set of Form C (SPDT)
NO/NC alarm relay contacts is also provided for controlling remote
annunication devices. The alarm output latches on in the event of an alarm and
an LED located on the outer surface of the housing is illuminated to provide a
visual indication that an alarm condition has occurred. The detector is reset
by momentarily interrupting input power.
Classification.
The Model 30-3003 is designed to meet NEC requirements for Class I, Division
2, Groups A,B, C and D; hazardous areas. CSA certified for use in Class 1,
Division 2, Groups A,B, C, and D hazardous locations.
Explosion-Proof Certification. The Model 30-3003 is certified by the
German Electric Industry Association, VDE, to meet Standards 0171/ “Special
Protection” (Ex)sG5 (sand encapsulated), and PTB/CENELEC approved as EEx q II
T5.
Specifications
Operating Voltage: 20 to 28 volts DC.
Operating Current : Standby: 10 milliamperes. Alarm: 35 milliamperes.
Temperature Range: –13°F to +140°F (–25°C to +60°C).
Alarm and Supervisory Relay Contact Rating: 1.0 ampere at 30 vdc. SPST.
Auxiliary Alarm Relay Contact Rating: 2.0 amperes at 30 vdc. Form C.
SPDT.
Dimensions: Diameter: 5-5/16″. Depth: 3-1/2″.
Junction Box: Body Material: Copper-free aluminum,
Cover: Feraloy, Conduit Fitting: 25 mm (female).
Installation
The Model 30-3003 is intended for surface mounting. The mounting screw holes
are counterbored for No. 8 flat-head screws. Electrical equipment that is used
in conjunction with the smoke detector is connected to the detector using a
terminal strip located in the junction box that is furnished with the unit.
NOTE: For maintenance information see your product documentation.
Detector Location
The smoke detector is normally mounted on the ceiling not less than six inches
from a side wall. The exact location of the detector must be determined by an
evaluation based on engineering judgment supplemented, if possible, by field
tests. For additional information on detector location and spacing, contact
the National Fire Protection Association, Batterymarch Park, Quincy,
Massachusetts 02269, and request a copy of NFPA Number 72, the Standard on
Automatic Fire Detectors.
Detector Connections
The Model 30-3003 contains two sets of relay contacts.
- One set of N.O. Alarm contacts close upon detection of smoke.
- One set of N.C. Trouble contacts close when the detector is powered.
Engineering Specifications
The detector shall be a 2.3% fixed sensitivity photoelectric smoke detector,
providing minimum response time to all fire types.
The detection chamber shall extend beyond the main housing into the area to be
protected, to provide maximum smoke entry capability into the chamber from any
direction.
The detector light source shall be an IRED (Infrared Emitting Diode). Typical
detector current consumption in the standby condition shall be 10
milliamperes.
The detector shall lock in on alarm and have a visible alarm indicator LED.
The detector shall have SPST alarm relay contacts for connection to the fire
alarm control panel and also power supervision contacts.
The detector enclosure shall be an explosion-proof flanged housing designed to
meet CSA certification for use in Class 1, Division 2, Groups A, B, C and D
hazardous locations.
The detector shall be intended for surface mounting and connection to the
system wiring shall be within a rated enclosure (furnished).
Product Line Information 30-3003: Explosion-Proof Smoke Detector.
Fire•Lite® Alarms is a registered trademark of Honeywell International Inc.
©2012 by Honeywell International Inc. All rights reserved. Unauthorized use of
this document is strictly prohibited.
This document is not intended to be used for installation purposes.
We try to keep our product information up-to-date and accurate.
We cannot cover all specific applications or anticipate all requirements.
All specifications are subject to change without notice.
For more information, contact Fire•Lite Alarms.
Phone:800-627-3473,
FAX:877-699-4105.
www.firelite.com
Made in the U.S. A.
Page 2 of 2 — DF-60483:B1. 03/21/2012
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