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Trace Nitrogen in Argon Analyzer
Standby Button:
The Standby turns off the display and outputs, but circuitry is still
operating.
CAUTION:
THE POWER CABLE MUST BE UNPLUGGED TO
FULLY DISCONNECT POWER FROM THE
INSTRUMENT. WHEN CHASSIS IS EXPOSED OR
WHEN ACCESS DOOR IS OPEN AND POWER
CABLE IS CONNECTED, USE EXTRA CARE TO
AVOID CONTACT WITH LIVE ELECTRICAL CIRCUITS
.
Access Door:
For access to internal components of the analyzer, the front panel swings
open when the latch in the upper right corner of the panel is pressed all
the way in with a narrow gauge tool. Accessing the main circuit board
requires unfastening rear panel screws and sliding the unit out of the
case.
1.5 Rear Panel
The rear panel, shown in Figure 1-2, contains the gas and electrical
connectors for external inlets and outlets. Some of those depicted are
optional and may not appear on your instrument. The connectors are
described briefly here and in detail in Chapter 3 Installation.
Power Connection
Digital I/O
Teledyne Analytical Instruments
Introduction
Universal AC power source.
Analog Outputs:
0–1 VDC nitrogen concentration
plus 0-1 VDC range ID, and
isolated 4–20 mA DC nitrogen
concentration plus 4-20 mA DC
range ID.
Alarm Signals:
2 concentration alarms and 1
system alarm.
Remote Span/Zero
Digital inputs allow external
control of analyzer calibration.
5
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