Teledyne 326, 327 and 328 - Oxygen analyzers - Manual (Page 22)

Teledyne Analytical Instruments 3-2
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housing is designed to be wall or bulkhead mounted, allow sufficient room
for conduit installation on the wiring access side of the unit.
3.2 Electrical Connections 3.2 Electrical Connections 3.2 Electrical Connections 3.2 Electrical Connections 3.2 Electrical Connections
Refer to the Interconnection Diagram and Interconnection Schematic
which are included in the Drawings Section at the rear of this manual. For
Instruments with separate Control and Analysis Units, each unit may have
its own Interconnection Drawings.
3.2.1 Power 3.2.1 Power 3.2.1 Power 3.2.1 Power 3.2.1 Power
Standard Analyzer: A source of single phase, 50 or 60 hertz, 110 to
120 volt power, capable of delivering 2 amperes of current continuously, is
required to operate the standard analyzer.
327RAC/RBC and the 328RC:: CENELEC models require a source of
single-phase, 220 volt, 50/60 hz power capable of delivering 100 watts
continuously. The primary power is delivered throughout the analyzer from
a single point of entry in the control unit. The appropriate 1/2" conduit
access port is identified on the control unit outline diagram. Power service
should include an equipment ground wire of the same gauge as the power
wiring.
Special Design Options:: Different requirements may apply to special
orders. Consult the Specific Application Information and Drawings sections
and any Special Addendums in the manual for complete details.
Connections are made to a terminal strip. In the 326RA and 327RA, the
terminal strip is located at the rear of the unit. In the 326RB, 327RB/RBC
and 328RC, the terminal is located behind the front door panel. Consult the
electrical interconnection and wiring diagrams in the drawings section at the
rear of the manual for terminal designations. Observe the Hot, Neutral, and
Ground terminals (H, N and G), and install the incoming wiring accordingly.
Connect an equipment ground wire to the terminal marked G on the draw-
ing.
For the 327 RA/RB/RAC/RBC and 328R/RC, TAI provides a 4-foot
length of cable. If you need a longer cable, use any approved cable that
meets the requirements specified on drawing C-39909. Be sure the cable is
connected with an approved junction box. The H, N and G wires must be
polarized as indicated on the interconnection diagram. If in doubt, check the
wiring against the interconnection diagram. Then, check the wiring with a
voltmeter to be sure that the H and N wires are not transposed at the barrier
strip. (The neutral should read zero voltage when measured to ground.) The