The 600-IFD-140 is a Flame lonisation Monitor and Control Relay which operates in the rectification mode. An isolated current limited 230V 50Hz a. c. supply is appllied between the flame rod and the burner or pilot pipe (ground connected). In the absence of flame the resistance between the rod and the ground has a high value, therefore no current flows. In the presence of a flame, the area of ionised gas around the rod presents a lower impedence allowing a small current to flow. This current will have a d.c. content which is related to the ratio of rod to ground area. The 600-IFD-140J monitors this small current, displays its d.c. value on a 10 segments bar graph and operates a relay when the current excees 2µA (Flame Present Relay). Both relays have volt free change over contacts that are available for the User. - housing EEx - d IIC or back panel installation

DESCRIPTION	Flame Control Relay, Plug-in Type
OPERATING MODE	Flame Ionisation & Rectification
SUPPLY REQUIREMENTS	115 or 220/240V 50/60 Hz 10 VA +10% -15%
VOLTAGE SELECTOR SWITCH	Included in the printed circuit
INPUT	From any flame rod
EXCITATION VOLTAGE	230V a.c. isolated and current limited
DISPLAY	10 segment LED bar graph scaled 0-5µA Flame is on when four segment of the bar graph are lit
POWER ON SIGNAL	First bar graph led is lit, when power is on
MAX DISTANCE OPERATE	MORE THAN 450 meters from pilot to IFD
FLAME PRESENT CONTACT	One SPDT GOLD contacts (DPDT on request)
CONTACT RATING	1A at 28 V d.c. 0.5A at 120V a.c. resistive load
FLAME FAILURE RESPONSE TIME	Less than 1 second
MAIN DIMENSIONS	164 x 170 x 175
DEGREE OF PROTECTION	IP 65
AMBIENT TEMPERATURE	-20 ƒC minimum +70 ƒC maximum
MODEL	600IFD
ESECUTION	Explosion proof housing EEx d IIC T5 IP65 CENELEC -- INERIS 03ATEX0174X