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2.4.4.1 WIRING, POWER
ECD recommends using a thermoplastic, outdoor sunlight resistant jacketed cable, wet location rated and ½” flexible
conduit. The power should be hard wired with a switch or breaker to disconnect the analyzer from the main power
supply. Install the switch or breaker near the analyzer and label it as the Power Switch for the analyzer.
110/220 VAC (4 wire configuration):
Attach power cable as shown in Figure 2.4.4.1. Feed the cable through the gland fitting on the left hand side of the
LQ800. 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.
2.4.4.2 WIRING, SENSOR
Attach the sensor wires as described on Figure 2.4.4.1. Feed the sensor cable through the gland fitting on the left hand
side of the LQ800. Starting with Sensor 1 is located on the far bottom right side of the circuit board and will go in
numerical succession with sensor 8 on the far bottom left. The green terminal strip connectors are detachable from the
circuit boards. Remove the connector by pulling straight back from the circuit board.
2.4.4.3 WIRING, 4-20 MA OUTPUTS
110/220 VAC powered instruments:
The analog Output is shown in Figure 2.4.4.2. It is located above the Sensor connections on the circuit board. The analog
output are labeled as Ao1 to Ao8. Ao standing for analog out, Ao1 will be located on the right side of the circuit board
and will go in numerical succession with sensor 8 on the left side.
2.4.4.4 WIRING CONTACT RELAY OUTPUTS
The standard configuration has 8 SPST 230V 6A relays that can be wired either normally open (NO) or normally closed
(NC). Diagram of the relays can be shown in Figure 2.4.4.3.
2.4.4.5 WIRING, ANALOG INPUT
The analog Input is shown in Figure 2.4.4.2. It is located above the analog output connections on the circuit board. The
analog inputs are labeled as Ai1 to Ai8. Ai standing for analog out, Ai1 will be located on the right side of the circuit
board and will go in numerical succession with Ai8 on the left side.
2.4.4.6 WIRING, DIGITAL INPUT
The Digital Input is shown in Figure 2.4.4.2. It is located above the analog output connections on the circuit board. The
analog outputs are labeled as Ao1 to Ao8. Ao standing or analog out, Ao1 will be located on the right side of the circuit
board and will go in numerical succession with sensor 8 on the left side.
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