Hamamatsu UVTRON How To Use Manual Download Page 1 | Manualshive

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TECHNICAL INFORMATION

How to Use UVTRON

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Summary of Contents for UVTRON

Page 1: ...TECHNICAL INFORMATION How to Use UVTRON...

Page 2: ...ensity of a gas burner flame city gas tungsten lamp and the sunlight on the earth s surface along with UVTRON spectral response characteristics As this figure shows the UVTRON has no sensitivity in th...

Page 3: ...Meanwhile the positive ions are accelerated towards the cathode and the resulting collisions with the cathode generate a great number of secondary electrons As this cycle is repeated a large current...

Page 4: ...R and C2 Point e The charge on C1 is exhausted the anode voltage falls below the discharge sustaining voltage Vs and the discharge stops The anode voltage does not recover until the next charge Durin...

Page 5: ...next point that must be considered is the background BG The BG is caused by sporadic discharges that occur due to radiation such as cosmic rays and static electricity even if no ultraviolet light ent...

Page 6: ...is generated to the output circuit and the counter is reset Point d At the output circuit the output pulses from the counter are lengthened to the necessary time interval T2 and are output 1 Figure 8...

Page 7: ...igure 8 Operation Time Chart for Signal Processing Circuit SUPPLY VOLTAGE AND SENSITIVITY Figure 9 shows a typical relation between the supply voltage and the UVTRON sensitivity The UVTRON is more sen...

Page 8: ...nterfere with each other optically 2 Humidity Humidity around the UVTRON leads may cause leak current dropping the anode voltage and stopping the UVTRON from operating In particular if dirt or dust ge...

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