ATT2100 TEMPERATURE TRANSMITTER
Operation Manual M2100-REV-G
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4.8.2 Selecting the Wiring Materials
(1) Use over 600V PVC shielded wire or standard lead line of same class or cable. (In order to
ensure proper communication use 24 AWG or lager wire, and do not exceed 1500 meters.)
(2) Use the shielded wire in electrical noise effected area.
(3) At the higher or lower temperature area than ambient temperature it uses the wire or the cable
that is suitable like that temperature.
(4) You have to use suitable wire, cable in environment like oil, solvent, toxic gas or liquid.
(5) Terminal process of lead line must use to not soldered terminal lug. Recommend isolating lead
end terminal using contract tube.
4.8.3 Connections of External Wiring to Transmitter Terminal Box
Wiring method is following this.
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(1) Open the housing cover indicated "FIELD TERMINAL". In explosion environment when circuit is
powered on, don't open the covers.
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(2) Connect the power supply in the terminal indicated "+PWR"(left terminal) and "-" power supply
in the central terminal. Don't connect "+" power supply in "+" terminal of the point indicated
"TEST". It will be damage to test diode used to connecting TEST terminal.
(3) Seal and close the non-using Conduit Connection Part for severe humidity and explosion on the
terminal box of housing.
(4) Transmitter power is supplied to Signal Wiring. So, don't install near to Signal Wiring with Power
Wiring or near to Power Apparatus. In case of ground signal, ground the signal loop's one side
and other side is not grounded. Promote to ground "-" side of power.
(5) For the better adjustment completely turn Screw terminal.
(6) Again close the transmitter cover. Specially in case of using in explosion area, you must to satisfy
requirement about explosion.
[Note]
Don't supply high voltage (AC power) in transmitter leads. It can be caused damages to
transmitter.
(7) You have to connect 250~600 ohm Loop Resistor in Current Loop(between Power Supply and
Transmitter) for HART Communication HART. Following Figure 4-2 is about connection of Current
Loop.
Figure 4-2. Connection of Current loop