1-2
1 Introduction Model 3300TB
Teledyne Analytical Instruments
• Three analog outputs: two for measurement (0–10 V dc, and
negative ground 4–20 mA dc) and one for range identification
(0-10 V dc).
• Compact and rugged Control Unit, wall mounted NEMA-4 rated
enclosure.
• RS-232 Serial Digital port for output of concentration and data to a
computer terminals, or other digital devices.
• A Sample flow control valve.
1.3 Front Panel DescriptionAll controls except the power switch are accessible from the door and gas
panel. See Figure 1-1. The front panel has seven pushbutton membrane
switches, a digital meter, and an alarm indicator LED for operating the analyzer.
These features are described briefly here and in greater detail in Chapter 4,
Operation.
Figure 1-1: Front Panel
Function Keys: Seven pushbutton membrane switches are used to select
the function performed by the analyzer:
•Set Alarm 1 Set Alarm 1 Hi or Low, and the concentration at
which alarm 1 activates.
•Set Alarm 2 Set the Alarm 2 Hi or Low, and the
concentration to which alarm 2 activates.