FOR A LIST OF RELEVANT PATENTS
AND TRADEMARKS PLEASE SEE
CHENTRONICS.COM/LEGAL-NOTICES
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CONDITIONALLY LOANED AND IS TO BE RETURNED UPON
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NOT TO REPRODUCE NOR COPY IT IN WHOLE OR IN PART NOR
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CHENTRONICS. FOR MORE INFORMATION PLEASE CONTACT
CHENTRONICS AT +1.607.334.5531.
TOLERANCE NOTES
FABRICATED TOLERANCES
≥ 2 ft (610 mm) ± 0.250 in (6.4 mm)
< 2ft (610 mm) ± 0.125 in (3.2 mm)
MACHINED TOLERANCES
± 0.050 DECIMAL DIM (1 PLACE)
± 0.010 DECIMAL DIM (2 PLACES)
± 0.005 DECIMAL DIM (3 PLACES)
4.4 Technical Specifications
4.4.1 Definitions
FLICKER – Flicker refers to the modulation of flame intensity due micro-explosions of the fuel.
FDORT – Flame Detector ON Response Time – the period of time from flame intensity rising above the
user adjustable threshold to flame relay contacts closed.
FDRT – Flame Detector Response Time –the period of time between the loss of a sensed flame and the
signal indicating the absence of flame.
MFFRT – Marginal Flame Fail Response Time – period of time from flame intensity falling below the user
adjustable threshold to the flame relay contacts open.
EASI - Electronically Assisted Sight Indicator – refers to the red LED (Light Emitting Diode) located on the
back of the Non-hazardous Area Models, that flashes to indicate flame intensity. When no flame is present
the LED blinks approximately 1 time per second. When a flame is present the LED’s blink rate increases
proportional to the flame intensity. At optimal sighting and scanner gain, the LED blinks at approximately
30 times per second. If the LED is on solid or off the scanner is faulted and should not be used.
GAIN – When a signal is amplified, GAIN is the ratio of the amplified signal relative to the original.
DISCRIMINATION – is the ability to distinguish between multiple flames. An example of good
discrimination is when the MB scanner is able to recognize a pilot flame with other burner’s main fuel
flame in the background. The status of the main (background) flame does not affect the ability to detect
the pilot flame (ON or OFF).
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