Sierra Monitor Corporation Flame Detector 3100 User manual

Model 3100 Series
Flame Detector
Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 [phone] 800-727-4377 FAX: [phone]
The Sierra Monitor Model 3100 Series Flame Detector
utilizes Ultraviolet, Infrared and Visible spectrum to pro-
vide continuous and reliable flame detection. Flame de-
tectors incorporating just IR or just UV can experience
falsealarms.EvensomeIR/UVdetectorscanexperience
false alarms. But the Model 3100 incorporates a unique
three spectra design. This provides the Model 3100 with
enhanced false alarm rejection. An additional benefit of
thisdesignis the ability of theModel3100 to detect flame
from hydrocarbon and non-hydrocarbon sources, mak-
ingit the ideal product for typical chemical/petrochemical
plants where the flame source could be from a variety of
gases.
The microprocessor in the Model 3100 is programmed
withstate-of-the-artfirealgorithmsandcontinuouslyana-
lyzes the data from the sensor array for individual inten-
sity values, change of intensity values, relationship of in-
tensityvalues,andfrequencysignaturecorrelations.Each
algorithmis designed torecognizea different typeofflame
signaturefromthe detectors while rejectingcommonfalse
sources. When the conditions of any one of the several
fire algorithms are met the Model 3100 declares a fire.
When the alarm decision is made in the microprocessor,
thedetectorstoresthepre-fire spectral data in nonvolatile
memoryandoutputsanalarmsignalin the form of a relay
transition.Theenhancedrelay models also include a sec-
ondalarm relay available for alarm verification purposes.
Theverificationlevel is field selectable.
The Model 3100 is the only flame detector that provides
RS-232 access to pre-fire spectral data and diagnostic
information. Self diagnostic features of the
micro-processor continuously perform system tests,
watching for any faults which would impair its ability to
accurately detect a flame and declare an alarm. The sys-
tems being checked include input power, sensor circuits,
relay circuits and several other internal systems. The
Model 3100 also performs a through-the-lens test of the
sensor and lens systems. All faults are recorded in
non-volatile memory and may be retrieved at any time by
theoperator.
The Sierra Monitor Flame Detector features 120 degree
solid cone field of view, the widest in the industry. The
Model 3100 series is in a copper-free cast aluminum
NEMA4Xrated explosion proof enclosure.
Detector Response To Various Fuels
Fuel Distance Fire Size Response Time
Heptane 80 Feet 1 Square Foot Less than 3 sec.
Silane 50 Feet 18 inch jet Less than 3 sec.
Hydrogen 15 Feet 18 inch jet Less than 5 sec.
Kerosene 75 Feet 1 Square Foot Less than 5 sec.
Field of View

Model 3100 Series Flame Detectors
Specifications
Sensitivity: 1 ft. sq. Pan fire on axis ~ 80 feet within 5 seconds (using standard fuel)
Switch selectable form 20 to 80 feet to a 1 sq. ft. kerosene fire
Field of View: 120 degree cone
Responsivity: UV - 180 to 260 nm, IR - 0.715 to 3.5 microns, Visible - 480 to 560 nm
Input voltage: 15to 32 volts, typically 24 volts
Current draw: @24 Volts DC: 72 mAnormal mode, 82 mAalarm mode
Temperature range:
Operating: -40°F to 185°F (-40°C to 85°C)
Storage: -67°F to 230°F (-55°C to 110°C)
LEDs: Display switch settings, fault type, fire and verified fire information
Relays:
Model3100-01: Fire and Fault Relays
Fire Relay: 0.5 amp ~ 120 VAC, 1.0 amp @ 24 VDC resistive, normally open and
normally closed contacts, latching or fire-following modes
Fault Relay: 0.5 amp ~ 120 VAC, 1.0 amp ~ 24 VDC resistive, normally open,
commonandnormally closed contacts
EnhancedRelay Fire, Fault, Verify and Aux Relays
Models: Verify Relay: 0.5 amp ~ 120 VAC, 1.0 amp ~ 24 VDC resistive, normally open and
normally closed contacts are available. May be operated in either a latching or fire
followingmode.
Aux Relay: 0.5 amp ~ 120 VAC, 1.0 amp ~ 24 VDC resistive, normally open and
normally closed contacts are available. Normally used to indicate a Lens Check Fault.
Enclosure: Copper-free CastAluminum with epoxy finish
Hazardous area
classification: NEMA4XEnclosure rating, Explosion Proof
Class I, Div. 1 and 2, Groups B, C, D, Class II, Div. 1 and 2, Groups E, F, G, Class III
Dimensions: 5.4 x 4.8 x 3.7 inches (13.7 x 12.2 x 9.4 cm)
Weight: 3 lbs (1.3 Kg)
Approvals: FMApproved,CSFM: 7210-1608:100
Ordering Information
Model Verified Alarm Aux. Relay Standard Alarm and Trouble Output
3100-01 N/A N/A
These devices have both normally open and
normally closed relay contacts.
3100-02 Open Contacts Closed Contacts
3100-03 Closed Contacts Open Contacts
3100-04 Open Contacts Open Contacts
3100-05 Closed Contacts Closed Contacts
3100-06 20mA N/A Normal 4 mA alarm 12 mA Trouble 0 mA
© 2006 by Sierra Monitor Corporation Rev. B2-06/24/06
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Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 [phone] 800-727-4377 FAX: [phone]