FLAME SENSOR UVTRON ® UVTRON is an ultraviolet ON / OFF sensor tube that uses the photoelectric effect of metal and gas multiplication effect of electric current by means of discharge. It has a very narrow range of sensitivity from 185 nm to 300 nm and is completely insensitive to visible light. Because it used the discharge phenomenon, its sensitive is high and an adequate output voltage is obtained, making it possible to design a high-sensitivity, quick response ultraviolet detection with simple circuitry. The UVTRON reliably detects faint ultraviolet emissions from flames, making it ideal for applications such as fire alarms, arson surveillance, and burner combustion monitor devices. The UVTRON can also detect discharges such as corona discharges from high-voltage power transmission lines. FEATURES ●Capability of Detecting Very Weak Ultraviolet Rays (from 1 pW) ●Solar Blind Characteristics (Not Sensitive to Visible and Infrared Light) ●High Speed Response (A Few Milliseconds) ●Low Current Operation ●Compact and Lightweight APPLICATIONS ●Combustion Monitoring Apparatus for Gas and Oil Burner ●Fire Alarm Apparatus ●Arson Watch Monitors ●Photoelectronic Counter ●Detection of Ultraviolet Ray Leakage ●Detection of Discharge Phenomenon Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2010 Hamamatsu Photonics K.K. FLAME SENSOR UVTRON ® Parameter Dimensional Outline R244 R259 R1753-01 R2868 R9454 R9533 R1868 R259-01 Unit 1 1 2 3 4 5 6 1 — W Mo — 4 3 g Electrode Material Ni Weight 3 3 Spectral Response / Symbol (Fig. 1) Maximum Rating Supply Voltage (DC) 4 1.5 1.5 2.5 185 to 280 / B 185 to 300 / C 185 to 260 / A 575 420 420 400 500 400 nm 425 (300 G) 420 V Average Discharge Current A 3 1 10 5 mA Peak Current B 50 30 200 100 mA Operation Ambient Temperature -20 / +125 °C -20 / +125 -20 / +60 Characteristics (at 25 °C) Discharge Starting Voltage (DC) Max. 440 260 260 280 360 280 240 (170 G) Discharge Sustaining Voltage (DC) Typ. 330 220 185 240 300 230 170 200 V Sensitivity C Typ. 480 600 10000 5000 4000 10000 1500 200 min-1 Background D Max. 5 V min-1 10 Average Life E h 10000 Recommended Operating Parameters 500 ± 50 Supply Voltage (DC) 325 ± 25 325 ± 25 Average Discharge Current Quenching Time F 260 400 ± 25 350 ± 25 325 ± 25 V 2 0.5 mA 0.3 3 1 2 2 2 1 2 1 ms — — E678-9C — — E678-8F E678-9C — — Min. Suitable Socket (Sold Separately) (Fig. 3) 325 ± 25 310 ± 30 (220 ± 20 G) 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 be handled if its full width at half maximum is less than 10 µs. iP 10 µs t C These are representative values for a wavelength of 200 nm and a light input of 10 pW/cm2. Think of these values as relative sensitivity values. In actual use, the sensitivity will vary with the wavelength of the ultraviolet radiation and the drive circuitry employed. D Measured under room illuminations (approximately 500 lux) and recommended operating conditions. Note that these values will increase somewhat in outdoor uses due to the effect of sunlight. E This is the service life under the recommend operating conditions. Since high ambient temperatures will reduce the service life, when using the tube in a high-temperature application, such as a burner monitor, consider using air-cooling. The UVtron is covered by a warranty for a period of one year after delivery. F When configuring the tube with an external quenching circuit, use circuit constants so that the quenching time becomes longer than these values listed. When using a pulse driven circuit using CR, if the applied voltage is in the recommended range, the quenching time tq can be calculated with the following formula. (Refer to the diagram of the recommended operating circuit.) tq 0.5 × C1 · R1 G The RMS voltage when pulsating current is supplied. Figure 1: Spectral Response RELATIVE SENSITIVITY (%) 100 TPT B0035EB 10 C 1 A B 0.1 160 180 200 220 240 260 280 WAVELENGTH (nm) 300 320 Figure 2: Dimensional Outline (Unit: mm) 1R244, R259, R259-01 2R1753-01 3R2868 CATHODE 15 MAX. ANODE TOP VIEW A – A' 20.2 MAX. 11.5±1.0 11±1 A 20±2 ANODE 32 MIN. 23 ± 1 4 PIN BASE JEDEC No. E9-37 ANODE 3 72° ANODE 12 MAX. ANODE 6 (MESH) CATHODE CATHODE CATHODE 5 × 12 4±1 8 ± 1 HARD PIN 1 A' UV GLASS BULB ANODE 44 MAX. FLEXIBLE LEAD: 0.5 CATHODE 18 MAX. 7 MAX. 38 MIN. 6 MAX. 32 MAX. 26±2 34±2 9.0 ± 0.5 1 LEAD: 0.65 ± 0.05 8 CATHODE LEAD 8±1 CATHODE TPT A0038EA ANODE LEAD SIDE VIEW TPT A0039EA 4R9454 TPT A0023EB 5R9533 6R1868 13.5 ± 1.0 CATHODE ANODE CATHODE TOP VIEW A – A' ANODE 20.2 MAX. TOP VIEW 9.0 ± 0.5 45 . 14 MAX. 8- 0.70 ± 0.05 15±2 HARD PIN 1 4 PIN BASE JEDEC No. E9-37 12 MAX. 4.15 MAX. ANODE MARK (RED) SIDE VIEW ANODE 4±1 8 ± 1 4 ANODE LEAD CATHODE LEAD TPT A0036EC 6 2 7 1 8 CATHODE BOTTOM VIEW ANODE 11.9 CATHODE 8 ANODE TPT A0035EB TPT A0040EB Figure 4: Recommended Driver Circuits E678-8F 10 MΩ + 35 28.6 10 1 CATHODE ANODE Figure 3: Suitable Sockets (Unit: mm) Sold Separately E678-9C 6 72 ° 3 CATHODE 8±1 SIDE VIEW ANODE 3 5 14-25.71° CATHODE P.C.D. 7.9 ± 0.1 LEAD: 0.65 ± 0.05 M 32 MAX. 7 MAX. 32 MIN. CATHODE 5 × 10 24 ± 1 44 MAX. 20 MAX. 10 ± 2 A' UV GLASS BULB ANODE 6.4 ± 1.0 A ANODE 20 ± 2 15 CATHODE ° AX 4.7 kΩ* ANODE 24 23.6 18 SUPPLY VOLTAGE 2- 3.2 CATHODE 220 pF 500 V PULSE OUTPUT 2- 2.2 i 10 kΩ 1000 pF 2.8 2.0 13 3.4 17.4 10 – TACCA0283EA 11 TACCA0289EA * This 4.7 kΩ resistor must be connected within 2.5 cm from the tip of the UVTRON anode lead. TPT C0016EA FLAME SENSOR UVTRON ® ■PRECAUTIONS FOR USING THE UVTRON ●UVTRON light emission When the UVTRON discharges, it emits ultraviolet radiation. If a number of UVTRON are used in close proximity, they must be arranged so that they will not interfere with each other optically. ●Humidity Humidity around the leads for the UVTRON generates leak current, dropping the anode voltage, and stopping the tube from operating. In particular, if dirt, dust etc. get on the leads, that makes it easier for humidity to be absorbed, so keep the area around the leads clean. ●Dirt on the window Since the UVTRON operates at high voltage, static electricity causes dust to build up on the surface of the glass bulb. This invites lowering of the ultraviolet transmissivity and sensitivity of the UVTRON, so periodic maintenance, such as wiping off with gauze dipped in alcohol, is necessary. ●Soldering For mounting the UVTRON on a printed circuit board, solder it quickly (350 °C for less than 5 seconds). If the leads are heated excessively, the glass can crack or the characteristics of the UVTRON deteriorate. After soldering, wipe away the solder flux with alcohol or a similar agent. If the leads are left dirty, current leak due to humidity will lower the voltage applied to the UVTRON socket available from HAMAMATSU. ●Vibration and shock UVTRONs have passed vibration and shock tests in compliance with IEC 60068-2-6 (sinusoidal vibration test - R9454, R9533: 3.0 mm peak to peak, 200 m/s2, 10 Hz to 2000 Hz; other types: 1.5 mm peak to peak, 100 m/s2, 10 Hz to 500 Hz) and IEC 60068-2-27 (shock test - R9454, R9533: 10000 m/s2, 1 ms; other types: 1000 m/s2, 11 ms). However Cif subjected to strong mechanical shocks such as drop impacts, the glass envelope may crack or internal electrodes may deform resulting in poor electrical characteristics. So use extreme caution when handling the UVTRON. If the leads are machined or cut with a wire cutter, the internal electrodes may be subjected to vibrations or shocks greater than the above tests, resulting in poor electrical characteristics as in the case where they are subjected to drop impacts. ●Polarity Connect the UVTRON with correct polarity. Reverse polarity connection will cause malfunction or breakdown. ■WARRANTY The UVTRON is covered by a warranty for a period of one year after delivery. The warranty is limited to replacement of any defective tube due to defects traceable to the manufacturer. RELATED PRODUCTS UVTRON® DRIVING CIRCUIT C10423, C10807 (Sold Separately) The C10423, C10807 are compact drive circuits. Since the high-voltage power supply and signal processing circuit are mounted on the same printed circuit board, the C10423 operates as a flame sensor by just supplying a DC voltage (12 V to 24 V) and connecting an UVTRON®. Please use C10423 with R9454, C10807 with R9533. Please note that the R9533 lead pins cannot be soldered directly to the C10807. A dedicated socket (E678-8F) must be used to make the connection. For more details, refer to the driving circuit catalog. ▲ C10807 WEB SITE www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Electron Tube Division 314-5, Shimokanzo, Iwata City, Shizuoka Pref., 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205 U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: [email protected] Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: [email protected] France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: [email protected] United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: [email protected] North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: [email protected] Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: [email protected] TPT 1021E04 JUN. 2010 IP