ECD DO82, Instructional Manual

Page: 23 / 52

HYDRA-DS NO
3
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Warning: RISK OF ELECTRICAL SHOCK
Disconnect Power before opening instrument
WARNING Electrical installation must be in accordance with the
National Electrical Code (ANSI/NFPA-70) Canadian Electrical Code
and/or any other applicable national or local codes.
2.4.3.1 W
IRING
, P
OWER
ECD recommends suing a thermoplastic, outdoor sunlight resistant jacketed cable, we 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.
L
OOP
P
OWERED
(2 wire configuration)
Attach the 24VDC signal cable to terminals #1 and #2 as shown in Figure 2.4.3.1 and on the diagram inside of the T80
cover. Feed the cable through the gland fitting on the right hand side of the T80. 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 2.4.3.2 and on the diagram inside of the T80
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 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.