Double Infrared and Ultraviolet Flame Detector

Double Infrared and Ultraviolet Flame Detector 

1.General Description: 
The JTH-CH386Ex explosion-proof point type infrared / ultraviolet flame detector contains 
two infrared wavelength sensors,one ultraviolet sensor and optical filter. The detector has 
the highest sensitivity to the CO2 emission spectrum (4.4 mu m). The infrared sensor 
detects the interference of ambient light and heat radiation.

2.Product function and composition 
It detects the Ultraviolet produced by fire,combines with the flame flicker frequency to process 
multiple signals ,which can maximum restrain the false alarm and the optimal fire detection 
perfermance,improve the sensitivity and response time of the detector.Make it has the 
performance of Antisun interference. 
The flame detector not only has early warning performance for organic compounds and other 
organic materials, but also for inorganic fire. According to customer demand, the detector can be 
set as infrared, ultraviolet and relationship, infrared, ultraviolet or relationship. 
The JTH-CH386Ex explosion-proof point type infrared / UV flame detector can work in harsh 
industrial environments such as high temperature, low temperature, high humidity and vibration. 
With the remote control detection function, the detector can be used to simulate the fire alarm 
function, the alarm reset, the setting of the delay alarm, and the setting of the lock and the 
unlocked mode of the relay output.

3.Technical parameters 
Item Specifications 
Model JTH-CH386Ex 
Standards 
The JTH-CH386Ex explosion-proof point type infrared / 
ultraviolet flame detector has been approved by the CCCF 
certification and national explosion-proof product certification of 
the Chinese fire protection products to meet the requirements of 
the national GB12791-2006, GB15631-2008, GB3836.1-2010 
and GB3836.2-2010 standards. 
Performance 
Characteristics 
The sensitivity can be set on the spot. 
Electromagnetic radiation immunization, sunlight blindness 
2.Product function and composition 
It detects the Ultraviolet produced by fire,combines with the flame flicker frequency to process 
multiple signals ,which can maximum restrain the false alarm and the optimal fire detection 
perfermance,improve the sensitivity and response time of the detector.Make it has the 
performance of Antisun interference. 
The flame detector not only has early warning performance for organic compounds and other 
organic materials, but also for inorganic fire. According to customer demand, the detector can be 
set as infrared, ultraviolet and relationship, infrared, ultraviolet or relationship. 
The JTH-CH386Ex explosion-proof point type infrared / UV flame detector can work in harsh 
industrial environments such as high temperature, low temperature, high humidity and vibration. 
With the remote control detection function, the detector can be used to simulate the fire alarm 
function, the alarm reset, the setting of the delay alarm, and the setting of the lock and the 
unlocked mode of the relay output. 
Shell Material Cast Aluminum 
Weight  1.6Kg 
Size 186mm X 191mm X 96mm 
Explosion Proof 
Protection 
EXd II CT6Gb 
IP65 
Pressure range 86KPa-106KPa 
Operating Voltage DC18~32V polarity 
Current Standby Current:≤15mA Alarm Current: ≤30mA 
Detection Angle ≤120° 
Fire response time ≤5S 
Spectral Response Wavelength IR:3.8µm, 4.48µm, UV:180 ~ 290nm 
Operating Humidity Range10% to 93% Relative Humidity, Non-condensing 
Operating Temperature Range -10- +55°C or -40°C - +70°C 
Detection Sensitivity Grade I 
Thread: G3/4" 
LED Status 
Normal Status: LED blinking in 5 seconds interval 
Alarm Status: LED lit steady 
Output Mode RS485 MODBUS protocol, alarm relay contact output, 4-20mA 
Detection Distance: 45 meters (33cm * 33cm * 5cm The flame of n-heptane ) 
Relay Output 2A/30VDC, 4-20mA (fault: 0-1mA, normal: 4mA + 5%, alarm: 12mA +