Det-Tronics Eagle Quantum 95-8470-05, Инструкция по эксплуатации

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Fault Latching
If the fault output is set for latching, the fault will not
clear until it is corrected and the unit is reset. If a fire
occurs, the unit will indicate a fire, over-riding the fault
condition, i.e., the fault signal will clear if not latched. If
a fault is still present after the fire has been
extinguished, the unit will again indicate a fault until the
problem has been corrected and the unit is reset.
EQ2200UVHT HIGH TEMPERATURE
UV FLAME DETECTOR
DESCRIPTION
The EQ2200UVHT UV Flame Detector provides UV
flame protection in continuous duty high temperature
applications, such as turbine compartments,
enclosures, generator rooms, etc. where ambient
temperatures can continuously 75°C (+167°F).
The EQ2200UVHT is an electronic module assembly
that is used in conjunction with a high temperature rated
C7050B UV detector (with DE1888K3 high temperature
rated UV sensor tube). The two devices are mounted in
separate explosion-proof, watertight enclosures.
The UV detector is rated for continuous duty in
environments up to +125°C (+257°F). The electronic
module is rated up to +75°C (+167°F).
NOTE
The electronic module cannot be located in the
high temperature area.
The UV detector and electronic module assembly can
be separated up to 165 feet (50 meters) using high
temperature rated 4 core shielded cable.
NOTE
In accordance with NFPA 72, the maximum
separation distance is 20 feet (6 meters) using
conduit or equivalent protection against
mechanical damage.
LED
Detector status is indicated by a red LED that is visible
through the viewing window on the cover of the
electronic module junction box.
Refer to the “EQ2200UV UV Flame Detector” section
above for a description of features, operating
characteristics and software selectable options of Det-
Tronics Eagle Quantum UV detectors.
EQ2200UVIR FLAME DETECTOR
DESCRIPTION
The EQ2200UVIR Series Flame Detector is designed to
provide reliable fire protection in applications where the
use of either ultraviolet (UV) or infrared (IR) detectors
alone can result in false alarms. When used alone, a UV
detector can respond to sources of ultraviolet radiation
besides fire, such as lightning, x-rays or arc welding.
Likewise, an IR detector can respond to various hot
objects, such as flickering or chopped radiation from
electric heaters or exhaust manifolds. The
microprocessor based EQ2200UVIR combines both a
UV and a single frequency IR sensor in a single
detector and requires simultaneous response of both
sensors to generate a fire alarm. These two detecting
elements monitor different portions of the radiation
spectrum and have virtually no common sources of
false alarms. This enables the detector to respond to a
real fire while ignoring potential false alarm sources
such as arc welding, x-rays, or hot vibrating objects.
Microprocessor based circuitry located inside the
detector junction box continuously monitors the two
sensors, evaluating the signal(s) with fire and fault
algorithms to determine the current status of the
detector. When both sensors simultaneously detect the
presence of fire, the microprocessor generates a fire
signal, which is immediately sent over the LON/SLC to
the logic controller in the Local Control Unit (LCU). The
LEDs, visible through the UV sensor viewing window,
are also immediately illuminated. In addition, a
watchdog timer assures that the detector’s operating
program is running properly.
Detector Output
The output of the device is a status message that is sent
to the gateway and logic controller in the LCU along the
communication loop. System response to the message
is determined at the time of configuration. The detector
supports ANSI/NFPA 72 Class A, Style 7 communication
with the LCU.
Status Conditions
Detector status conditions include normal operation,
fire, fault, UV only, and IR only. A fire alarm signal is
generated when both UV and IR sensors are active.
The fire alarm status has the highest priority and will
override a fault condition.
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