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1 Introduction Model 3190
Teledyne Analytical Instruments
• Two concentration alarms with adjustable setpoints.
• Sensor failure alarm.
• RS-232 serial digital port for output of concentration and range
data to a computer, terminal, or other digital device.
• 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 with flush-panel case.
Designed for indoor use. Front panel NEMA-4 rated.
• External Probe can be located six feet or more away, depending
on the existing electromagnetic noise level.
1.3 Front Panel Description
All controls and displays except the power switch are accessible from
the front panel. See Figure 1-1. The front panel has seven pushbutton mem-
brane 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: