Fireye 4-290-1 Tube 320734-701 perform a continuity test between

perform a continuity test between the two terminals

It is commonly used in Carrier-made units including 38EC

including commercial refrigeration and large tonnage air conditioning units

The internal transformer is highly robust and intended for standard 45-65 Hz industrial and commercial power monitoring applications

Fireye 4-290-1 Tube 320734-701 perform a continuity test betweenThe Fireye 4 290 1 replacement UV tube is a critical component for maintaining reliable flame supervision in industrial burner systems. Designed for use with Fireye UV1A, UV2, and UV8A flame scanners, this ultraviolet sensing tube detects the UV radiation emitted by fossil fuel flames while ignoring infrared signals from hot refractory. As a non self checking UV sensor, it is engineered for intermittent operation where the burner cycles at least once