RayTek FA Thermometer User Manual


 
Installation
20 MarathonSeriesFA/FR
Figure15:ElectronicsHousingWiring
Incorrectwiringcandamagethesensorandvoidthewarranty!Beforeapplyingpower,
makesureallconnectionsarecorrectandsecure!
Thefollowingfigureillustrateshowtoremovetheterminalblock.
Figure16:RemovingtheTerminalBlock
Theelectronicsboxhastwocompressionfittingstoprovidewatersealingforthefiberopticscableand
theelectronicscable.Thecompressionfittingmustbetightenedwithawrencharoundthecablesto
achievewatersealing.Toachievesealingforthefiberopticscable,
handtightenthecompression
fittingaroundthecable,andthenuseawrenchtotightenanother11/2to2turns.Ifthecableistoo
thinthenitmaybenecessarytoaddabushingorheatshrinkmaterialtoincreasethecablediameterin
ordertoensuresealing.Hand
tightenthecompressionfittingaroundthecable,andthenuseawrench
totightenanotherto2turns.
4- wire cable 12-wire cable
Cable compression
fitting or conduit adapter
Cable compression
fitting or conduit adapter
+mA (green)
-mA (brown)
NO/NC (blue)
COM (orange)
TRIG (yellow)
SHIELD (bare)
+mA (green)
-mA (white)
+24V (red)
GND (black)
TxA (purple)
TxB (grey)
RxA (black)
RxB (white)
+24V (red)
GND (black)
twisted cable pairs
Attention: Do not confuse twisted
pair black wire with single black
power wire