Teledyne 7320 - NDIR analyzer - Manual (Page 13)

1-5
Infrared Gas Analyzer Introduction 1
Teledyne Analytical Instruments
1.6.2 ESCAPE/ENTER Switch
Data Entry: The ESCAPE/ENTER switch is used to input data, from
the alphanumeric VFD screen into the instrument:
• Escape Moves VFD display back to the previous screen in a
series. If none remains, returns to the Analyze screen.
With subfunction selected, moves VFD back through
items on screen, to first item, then moves VFD to
previous display.
• Enter With a Subfunction Selected: Moves VFD on to the
next screen in a series. If none remains, returns to the
Analyze screen.
With a Value Selected: Enters the value into the
analyzer as data. Advances VFD to next operation.
(See Chapter 4 for details.)
1.7 Recognizing Difference Between LCD &
VFD
LCD has GREEN background with BLACK characters. VFD has
DARK background with GREEN characters. In the case of VFD - NO
CONTRAST ADJUSTMENT IS NEEDED.
1.8 Equipment Interface
The electrical connection are described briefly here and in detail in
chapter 3, Installation.
Electrical Connections: The electrical connections on the electrical
connector panel are described briefly here, and in more detail in chapter 3
Installation.
• Power Connection 115 or 230 V dc, 50 or 60 Hz.
• Analog Outputs 0-1 V dc concentration plus 0-1 V dc
range ID. Additional, isolated 4-20 mA
dc plus 4-20 mA dc range ID available.
• Alarm Connections 2 concentration alarms and 1 system
alarm.
• RS-232 Port Serial digital concentration signal output
and control input.