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Flame/Discharge Sensor
R244
UVTRON is a sensor sensitive only to UV light with wavelengths of 185 nm to 260 nm.
Featuring high sensitivity and quick response, UVTRON is ideal for detecting flame and electrical discharge.
Specifications
| Item | Description / Value | Unit | ||
|---|---|---|---|---|
| Sensor shape | Head-on type | － | ||
| Window material | UV transmitting glass | － | ||
| Electrode material | Nickel (Ni) | － | ||
| Spectral response range | 185 to 260 | nm | ||
| Characteristics (at 25 ℃) | Discharge starting voltage (DC) | Max. | 440 | V |
| Discharge sustaining voltage (DC) | Typ. | 330 | V | |
| Sensitivity (*1) | Typ. | 480 | min-1 (*8) | |
| Background noise (*2) | Max. | 5 | min-1 (*8) | |
| Expected life (*3) | 25000 | h | ||
| Recommended operating conditions | Input voltage (DC) | 500 ±50 | V | |
| Average discharge current | 0.3 | mA | ||
| Quenching time (*4) | Min. | 3 | ms | |
| Absolute maximum rating | Input voltage (DC) | 575 | V | |
| Average discharge current (*5) | 3 | mA | ||
| Peak current (*6) | 50 | mA | ||
| Operating temperature range | -40 ℃ to +125 ℃ | － | ||
| Applicable standards | Environmental standard (RoHS) | EN 63000 | － | |
| Shock resistance characteristics (*7) | 1000 | m/s2 | ||
| Weight | Approx. 2.7 | g | ||
| Socket (sold separately) | － | － | ||
| Driver circuit (sold separately) | － | － | ||
*1: Value was measured at wavelength 200 nm and intensity of light 10 pW/cm2.
*2: Value was measured at recommended operating conditions under indoor lighting (approx. 500 lx).
*3: Value for sustained electrical discharge at recommended operating conditions.
*4: When building an external CR quenching circuit, set the circuit constants so that the quenching time exceeds this value.
*5: If the sensor is used at this value, it will considerably reduce the life of the sensor. Therefore, use the sensor at the recommended operating conditions.
*6: This is the peak value of pulse current that can instantaneously flow. This is for when the half-value width of the peak value is 10 μs or less.
*7: Value was measured at an action time of 11 ms using the IEC 60068-2-27 shock test method.
*8: min-1 indicates counts/min.
Characteristics
Spectral response characteristics (Typ.)
Range characteristics (Typ.)
View characteristics (Typ.)
Dimensional outline (Unit: mm)
- Confirmation
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