The R9454 is the side-on type (UV light enters from the bulb side) having a similar shape to the R2868 UVtron and also offers high sensitivity and a wide field of view (directivity).


Spectral Response (Short) 185 nm
Spectral Response (Long) 260 nm
Electrode Material Ni
Weight 1.5 g
[Maximum Rating] Supply Voltage (DC) 500 V
[Maximum Rating] Average Discharge Current 1 mA
[Maximum Rating] Peak Current 30 mA
[Maximum Rating] Operation Ambient Temperature -40 ℃ to +125 ℃
Discharge Starting Voltage (DC) 360 V
Discharge Sustaining Voltage (DC) 300 V
Sensitivitiy Typ. 4000 min-1
Background Max. 10 min-1
[Recommended Operating Parameters] Supply Voltage (DC) 400 V +/-25 V
[Recommended Operating Parameters] Average Discharge Current 0.3 mA
[Recommended Operating Parameters] Quenching Time Min. 2 ms

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