Flame Sensors For Gas Burners - UV1 UV2 UV3
? Nominal life time: 10.000 hours
? Maximum distance from UV source: 1 m
? UV1-3 sensor temperature range: -20 ~ +50 °C
? V2 sensor temperature range: -20 ~ +60 °C
- Model Number: UV1 UV2 UV3
- Data Sheet:
- Quantity:
- - +
Product Specification
Phototubes type UV1 UV2 UV3
Flame Sensors For Gas Burners
UV1 UV2 UV3 Flame Sensors INTRODUCTION
Flame detection in burners occurs by means of sensors detecting the presence of flame through an electric signal which can be used by ignition and control devices.
UV phototubes exploit the ultra-violet radiation emitted by the light generated by the flame; they are especially suitable for applications in which very dissimilar fuels (e.g. liquid and gaseous fuels) are used.
UV1 UV2 UV3 Flame Sensors FEATURES
These sensors are used for flame detection in gas and mixed fuel (gas and oil) burners. UV phototubes consist of a glass bulb filled with gas, containing two electrodes suitably shaped. When supplying both electrodes with AC voltage , the electrons emitted by the negative biased electrode, and captured by the positive biased one, start an ionization process leading to the generation of an electric discharge and hence to the production of electric current.
UV1, UV2 and UV3 are the available phototube models; their features and dimensions are described hereunder.
PHOTOTUBE TYPE UV1
Phototubes type UV1 are available with two different sensitivity:
- Standard sensitivity
- /H : high sensitivity
The standard cable length is 655 mm, but versions with longer cables are available.
PHOTOTUBE TYPE UV2
Phototubes type UV2 are smaller than type UV1 (the length and the diameter of the housing are smaller).
The standard cable length is 655 mm, but versions with longer cables are available.
PHOTOTUBE TYPE UV3
The length and the superficial treatment of the housing and the side windows are the differences between models UV3 and UV1. The superficial treatment of the housing consists
of a chromium plating.
The UV3 phototube has no cable, which is supplied as an accessory (see fig. 1).
Phototubes type UV3 are available with two different sensitivity:
- Standard sensitivity
- /H : high sensitivity
UV1 UV2 UV3 Flame Sensors TECHNICAL DATA
Nominal life time
10.000 hours (*)
Maximum distance from UV source
1 m
UV1-3 sensor temperature range
-20 ~ +50 °C (*)
UV2 sensor temperature range
-20 ~ +60 °C
(*) The UV1 and UV3 phototubes can operate also at a temperature higher than + 50°C, but in this case th e sensor life time will be shorter than the 10.000 hour nominal life
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