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UV1A Series Scanner

The UV1A series scanner is an ultraviolet miniature non-self-checking scanner suitable for fuel gases and no. 2 oil. Non-replaceable tube.

The UV tube is made of quartz and is filled with a gas that ionizes when struck by UV radiation from the flame. In the absence of UV radiation, the gas acts as an insulator between two electrodes which are mounted inside the tube. These electrodes are energized continuously by a high voltage. During combustion, UV radiation ionizes the gas, causing current pulses to flow between the electrodes. These current pulses result in a flame signal which is transmitted to the amplifier in the control, where it is processed to energize or hold in the flame relay.

Operating Voltage:              (S1-S2): 560 VAC @120V (230V) 50/60 Hz applied

Operating Temperature Limits: Maximum: 200° F (94° C) Minimum: -40° F (-40° C)

Humidity :             85% RH maximum non-condensing 

UV1A3 : *              1/2" NPT, 36" (915mm) shielded leads

UV1A6 :*               1/2" NPT, 72" (1830mm) shielded leads

UV8A   :                 1/2" NPT, 72" (1830mm) unshielded leads,

UV1A-1-CEX :        1 NPT, 1 /2" NPT conduit cable entry

UV2      : *              3/8" NPT, 36" (915mm) shielded leads

UV2A6  : *              3/8" NPT, 72" (1830mm) shielded leads

45UV2-1020          1" NPT mount 60 Hz, 72" (1830mm) unshielded leads - OBSOLETE

45UV3-1050          3/4" Sleeve/setscrew mount, 72" (1830mm) unshielded leads

UV90-3                  36" (915mm) shielded leads

UV90-6                  72" (1830mm) shielded leads

UV90-9                  108 " (3660mm) shielded leads

For scanner dimensions refer to Figures 2 and 4.

Consult factory for custom lead lengths.

* Comply with NEMA 4X 

ACCESSORIES:

PART NUMBER                         DESCRIPTION

60-302                                 1/2" Swivel Union

35-69                                   Heat Insulator 1/2" NPT threads each end, (male x female).

60-1257                                1/2" NPT Union with quartz window

60-1290                                1 /2" NPT Union with quartz lens to increase sensitivity

4-314-1                                  Replacement UV tube for 45UV3