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Unit I GENERAL INFORMATION
DESCRIPTION
The UVC120 Flame Detectors combined with the U1F, U2F or U4F-UV Fire Controller provide
fast, reliable flame detection in a wide variety of applications. The microprocessor based
controllers simultaneously monitor up to four ultraviolet (UV) detectors to provide maximum
operating flexibility at minimum expense. The Automatic Visual Integrity (vi) feature provides a
continuous check of optical surfaces, sensitivity and electronic circuitry of the detector/controller
system. Automatic fault identification monitors system operation and provides a digital display of
system status using a numerical code. Controller response includes actuation of relays for direct
control of field response devices and a full array of faceplate indicators. Other features include
individual channel and area identification, "voting" capability and manual vi testing.
FEATURES
< Non-Intrusive testing activated by magnets
< Instantaneous response to ultraviolet radiation
< Automatic and manual Visual Integrity (vi) testing
< Adjustable sensitivity and time delay
< All automatic test functions performed with the system on line
< Automatic fault identification
< Individual channel identification with voting options
< Latching Area LEDs identify the area responding to fire
< Microprocessor-based controller is easily field-programmable.
< Two digital displays, one bar graph display and high intensity LEDs indicate
system status information
< Relay outputs are field adjustable as latching or non-latching
< Alarm relays are programmable for normally energized or de-energized operation
< Individual detector output (count rate) can be visually monitored on the digital
display
< Two 4-20mA current outputs (U2F and U4F). One 4-20mA output on U1F
< Conduit seals recommended to prevent moisture damage but not required
CONTROLLER SPECIFICATIONS
< Operating Voltage:
24 Volts DC nominal. 18 to 32Vdc.
< Power Consumption (controller only):
2.4 watts nominal, 4.4 watts maximum.
100 mA nominal, 180 mA maximum at 24 Volts DC.
Maximum startup current is 1.5 Amperes for 10 milliseconds. Power supplies
with fold back current limiting are not recommended.
< Maximum Ripple:
Ripple should not exceed 5 Volts peak-to-peak. The sum of DC plus ripple must
be $18 Vdc and #32 Vdc
< Temperature Range:
Operating: -40ºC to +85ºC (-40ºF to +185ºF)
Storage: -55ºC to +150ºC (-65ºF to +302ºF)