UV Intensity Monitor measures the actual UV intensity inside of the reactor chamber. The monitor detects the 254nm wavelength of UV and is displayed via a high quality meter mounted in the main control panel as well as having the ability to be remotely transmitted via a 4-20 ma signal. The meter is marked for UNSAFE OPERATION, SERVICE AND NORMAL OPERATION as is indicated below. In addition to the visual display a low UV intensity alarm is incorporated to give both a visual and audible signal to the operator.