Teledyne 316RA / RB / RAD / RBD - Oxygen analyzers - Manual (Page 11)

TELEDYNE ANALYTICAL INSTRUMENTS
7
Trace Oxygen Analyzer Model 316RA/RB/RAD/RBD
A source of single phase, 115 VAC, 50 or 60 Hz is needed to operate
the Series 316 analyzer (100/220 VAC optional). Polarize the power
connections as shown on the Interconnection Diagram (HOT to the “H”
terminal; NEUTRAL to the “N” terminal).
An equipment ground wire of the same gauge as the power service
(nominally 16-gauge) connects to the terminal identified “G.” This connec-
tion must be made to give the electronic circuit a proper earth ground
reference, and also provides short circuit protection for operating person-
nel.
Output Signal Connection
The magnitude of the output signal can be preset by TAI from 0-1
mVDC (full scale) to 0-1 VDC (full scale) at the time of purchase. Unless
otherwise specified, the output is 0-1 VDC. The output signal, regardless
of magnitude, is suitable for driving external devices that have an input
impedance of 10,000 ohms or more.
NOTE: For interconnection purposes, use a 2-conductor shielded cable,
particularly for those instruments whose output signal magnitude is
in the lower millivolt range. Polarize the signal connections as
shown on the Interconnection Diagram, and connect the shield at
the analyzer only.
Alarm Relay Connection (Optional)
The Series 316 may contain one or two fully adjustable alarm con-
tacts. The alarm relays are Form “C” (normally closed-common-normally
open) DPDT contacts rated at 3 amperes resistive. The alarm relays are
factory set to energize either above or below the set point; a single set point
instrument energizes below the set point, and a double set point instrument
energizes when the oxygen level reads above set point #1 and below set
point #2. Power connections are on the terminal strip.