DISCHARGE / FLAME SENSOR ® UVTRON

What is the UVTRON®? The UVTRON is an ultraviolet ON/OFF sensor that uses the photoelectric effect of metal and gas multiplication effect. As the UVTRON detects the light (ultraviolet radiation) in a flame, it provides outstanding high sensitivity and high-speed response compared to other methods such as smoke detection and heat detection. High sensitivity The UVTRON responds to faint ultraviolet emissions from flames, so it can accurately detect even small ignitions. Its high sensitivity allows reliable operation even in wide open space such as gymnasiums and other large composite facilities....

Flame detection Combustion monitoring Used in a location without flames. Flames are detected immediately when an ignition occurs. Constantly monitors flames and detects abnormality such as flames going out. Discharge detection Mainly used near electrical contacts. In the event of a discharge, it is immediately detected. Forest fire detection Fire detection in transportation vehicles and aircrafts Discharge detection of transmission steel towers UVTRON ●Transformer plant ●Power distribution panel Discharge detection of transformer plant and Power distribution panel Hydrogen flame detection EX:...

Specifications Parameter Dimensional outline Electrode material Spectral response range Maximum ratings Supply voltage (DC) Average discharge current Peak current Operation ambient temperature Discharge starting voltage (DC) Max. Discharge sustaining voltage (DC) Typ. Recommended operating parameters Average discharge current Quenching time Suitable socket (Sold separately) A Even at these current values, the electrodes are not consumed immediately, but the service life is noticeably reduced. Use the tube within the recommended current values. B This is the maximum momentary current that can...

Dimensional outline (Unit: mm) / Angular sensitivity 2R9454 ANODE LEAD ANODE LEAD CATHODE LEAD CATHODE LEAD ANODE LEAD CATHODE LEAD LEAD: 0.65 ± 0.05 ANODE LEAD CATHODE LEAD ANODE CATHODE ANODE CATHODE ANODE CATHODE ANODE CATHODE ANODE LEAD ANODE LEAD ANODE LEAD CATHODE LEAD CATHODE LEAD CATHODE LEAD ANODE LEAD ANODE LEAD CATHODE LEAD CATHODE LEAD

Driver circuits Recommended circuit This circuit is suitable for creating a high voltage DC power supply by converting low DC voltage of dry cells or the like with a DC-DC converter (oscillating voltage booster circuit) and can be operated reliably with minute current. As the voltage supplied to the UVTRON is DC, there is no dead time. As such, it can be applied to fire detection circuit with high-speed response. SUPPLY VOLTAGE – * To reduce the effect of lead wire’s stray capacitance, connect the 4.7 kΩ resistor within 2.5 cm of the tip of the UVTRON anode lead. TPT C0016EA Related products...

Related products Suitable sockets (Unit: mm) E678-9C Checker lamp for UVTRON UV source L9657-03 Spectral distribution This is a lamp for checking the UVTRON operation. It has an appropriate spectrum for checking the UVTRON operation and can be incorporated with the UVTRON. Checking the UVTRON operation increases the reliability of security equipment. Data below 200 nm is for reference. Parameter Description / Value Spectral distribution 185 to 400 Window material UV glass Weight Approx. 1 Supply voltage (DC) 600 Peak current 1 Maximum 200 ratings Operating temperature range -40 / +125 Storage...

Precautions ■PRECAUTIONS ●About background When a voltage is applied to the UVTRON, discharge may occasionally occur in the UVTRON even with no incidence of ultraviolet radiation. This phenomena is called background. Major causes of background are as follows: 1Radiations such as cosmic rays Discharge may take place due to gas ionization inside the UVTRON which is caused by incident radiations such as alpha-rays, beta-rays, and gamma rays. 2Static electricity If objects charged with static electricity are moved close to the UVTRON or touch it, the gas inside the UVTRON may become ionized by the...