Teledyne Analytical Instruments LXT-380, Instructions Manual

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Installation LXT-380 Universal Transmitter
Teledyne Analytical Instruments
12
2.2.1 WIRING, POWER
Field connections, including input power and user wiring is to be
supplied via conduit suitable for the environment classification. Mount
the enclosure and connect with conduit as per the conduit manufacturers
recommendations. Pull wiring thru the conduit and attach to the
terminals listed below. Tighten all joints and seal the conduit as required
to ensure compliance with installation requirements.
Loop Powered (2 wire configuration)
Attach the 24VDC signal cable to terminals #1 and #2 as shown in
Figure 2.2 and on the diagram inside of the LXT-380 cover. Feed the
cable through the gland fitting on the left hand side of the LXT-380.
Tighten the cable gland to provide a good seal to the cable. The
instrument can be powered up at this point with no harm to the analyzer
but it is best to wait until the sensor is installed.
24VDC (4 wire configuration)
Attach the 24VDC power cable to terminals #1 and #2 as shown in
Figure 2.2 and on the diagram inside of the LXT-380 cover. Attach the
4-20 mA1 cable to terminals #3 (out) and #2 (return)single channel unit
and attach the 4-20 mA2 cable to terminals #4 (out) and #2 (return) for a
two channel instrument. Feed the cables through the gland fitting on the
left hand side of the LXT-380. Tighten the cable gland to provide a good
seal to the cable.
The instrument can be powered up at this point with no harm to the
analyzer but it is best to wait until the sensor is installed.
2.2.2 WIRING, BARRIER 9120019
Pass the barrier cable thru the selected ¾” NPT port and tighten to
complete flameproof Ex-d seal. Ensure at least 5 full threads of
engagement. Insert the corresponding wires into the terminal block
locations identified below. For single channel configurations, connect
the White/Green wire to poV RED above the label Sensor #1.
Connect the White/Orange wire to position 1A WHT and connect the
Green wire to the 1B GRN position. Connect the Orange wire to the
RTN BLK position. Connect Green Grounding wire to the chassis