Fire Alarm RoR and Fixed Heat Detector

 Jual Fire alarm Sistem Alarm Kebakaran
ATJ-EA FIXED TEMP/RATE OF RISE HEAT SENSOR
STANDARD FEATURES
SPECIFICATIONS
• Low profile - Only 2.00" high, including base
• Simple and reliable device addressing method
• Uses the noise immune Digital Communication
Protocol (DCP), which utilizes interrupts for fast
response to fires
• Rate of Rise temperature threshold = 15°F/Min
(determined by panel)
• Adjustable threshold temperature = 135°F - 190°F
(determined by panel
SPECIFICATIONS
Operating Voltage 17 - 41 VDC
Standby Current 350ìA
Alarm Current 500ìA
Transmission Method DCP - Digital
Communication Protocol
Rate of Rise 15°F/Min. (8.3° C/Min.)
UL Temperature Range 135°F to 190°F
(57.2°C to 87.8°C)
Operating Temperature 32°F to 190° F
Range (0° C to 87.8° C)
Maximum Humidity 95% RH Non-Condensing
Color & Case Material Bone / White - ABS blend
Weight 3.2 oz
(4.9 oz. with 4" base)
Bases YBN-NSA-4, HSB-NSA-6,
ASB, SCI-B4 and SCI-B6
 
APPLICATION
The Hochiki America ATJ-EA Fixed Temperature / Rate
of Rise sensors provide accurate temperature
measurement data to the fire alarm control panel. These
sensors are well-suited for environments where dust,
cooking fumes or other factors make the use of smoke
sensors impractical.
 
ENGINEERING SPECIFICATIONS
Heat sensors are installed in accordance with NFPA
(National Fire Protection Association) 72, the UL Listed
Spacing Requirements and the rules and regulations set
forth by the local authorities having jurisdiction. The contractor
shall furnish and install, where indicated on the
plans, Fixed Temp / Rate of Rise Automatic heat sensors.
 
OPERATION
The ATJ-EA incorporates a highly linear thermistor circuit.
The specially designed cover protects the thermistor
while allowing maximum air flow. The thermistor circuit
produces a voltage proportional to the temperature; this
information is transmitted to the control panel as a digital
value. When the ambient temperature exceeds a preprogrammed
threshold (fixed temp or rate of rise), the
sensor transmits an interrupt to the control panel
indicating a fire alarm. The fire alarm control panel can
adjust the sensor's fixed temperature threshold for
different installation requirements.
Up to 127 devices may be installed on each SLC loop.
The sensor address may be set by a hand-held
programming unit. The sensor mounts to an electronicsfree
base and incorporates a locking mechanism for
security. The base provides mounting slots, terminals
for field wiring and a third terminal for a remote indicator/
LED. The sensor has dual LEDs for easy viewing of the
sensor status.