Rosemount 755, Instruction Manual

Page: 24 / 94

M
ODEL
755 O
XYGEN
A
NALYZER
2-2
748183-H Rosemount Analytical
November 1997
Note
Refer to Installation Drawing 632349 or 643127 at the rear of this manual for
recommended cable conduit openings.
With reference to Installation Drawing 632349 or 643127, any unused cable
conduit openings must be securely sealed by permanent closures in order to
provide enclosure integrity in compliance with personnel safety and
environmental protection requirements. The plastic closures provided are for
shipping protection only.
Note
For NEMA 3R service, all conduit must be connected through approved fittings.
The analyzer is supplied, as ordered, for operation on 120 VAC or 240 VAC, 50/60 Hz.
Make sure that the power source conforms to the requirements of the individual
instrument, as noted on the name-rating plate.
2.4 ELECTRICAL CONNECTIONS
2.4.1 L
INE
P
OWER
C
ONNECTIONS
Electrical power is supplied to the analyzer via a customer-supplied three-conductor
cable, type SJT, minimum wire size 18 AWG. Route power cable through conduit and
into appropriate opening in the instrument case. Refer to Installation Drawing (632349
or 643127). Connect power leads to HOT, NEUT, and GND terminals on TB1, Figure
2-1. Connect analyzer to power source via an external fuse or breaker, in accordance
with local codes.
Note
Do not draw power for associated equipment from the analyzer power cable.
2.4.2 R
ECORDER
O
UTPUT
S
ELECTION AND
C
ABLE
C
ONNECTIONS
If a recorder, controller, or other output device is used, connect it to the analyzer via a
22 or 24 AWG two-conductor shielded cable. Route the cable through conduit to the
analyzer, and into the case through the appropriate opening shown in Installation
Drawing (632349 or 643127). Connect the shield only at the recorder end.
Note
Route recorder cable through a separate conduit, not with power cable or alarm
output cable.
CAUTION: ENCLOSURE INTEGRITY