Partlow MRC 7700, Руководство по установке и эксплуатации

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P
AGE
15
2.6.2 AC POWER WIRING CONNECTIONS
WARNING: Avoid electrical shock. AC power wiring must not be connected at the source distribution
panel until all wiring connections are completed.
FIGURE 2-5
AC Instrument Power Input
Connect the 115 VAC hot and neutral to terminals 1 and 2 respectively of TB1. See Figure 2-4
(page 14) for Terminal Block locations on the instrument. Connect the 230 VAC one leg to
each terminal, be sure to check the position of the Voltage Selector switch provided with 230
VAC instruments. The switch position must match the voltage input to the instrument.
FIGURE 2-6
Thermocouple Inputs
For Relative Humidity calculations both sensor inputs must be the same kind. For best results,
a matched pair of sensors should be used. Use TB4 for the Dry Bulb input, and TB5 for the
Wet Bulb input. Connect the positive leg of the thermocouple to terminal 1, and the negative
to terminal 2. Be sure that the input conditioning jumpers are properly positioned for a
thermocouple input. See Appendix A-1 (page 68).
TB4 and TB5
1
2
3
4
5
-
Grounded or
Ungrounded
Thermocouples
may be used
+
1 2
TB1
Connect the AC
ground at the
green ground screw
on the left side of
the inside of the
case
Line 1
~
Line 2
~