Displays; Recognizing Difference Between Lcd & Vfd; Electrical Connector Panel - Teledyne 3020T Operating Instructions Manual

Trace Oxygen Analyzer

1.5.3 Displays

Digital Meter Display: The meter display is a LED device that
produces large, bright, 7-segment numbers that are legible in any lighting. It
produces a continuous readout from 0-10,000 ppm and then switches to a
continuous percent readout from 1-25%. It is accurate across all analysis
ranges without the discontinuity inherent in analog range switching.
Alphanumeric Interface Screen: The VFD screen is an easy-to-use
interface from operator to analyzer. It displays values, options, and messages
that give the operator immediate feedback.
Flowmeter: Monitors the flow of gas past the sensor. Readout is 0.2 to
2.4 standard liters per minute (SLPM).
1.6
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.
1.7

1.7.1 Electrical Connector Panel

The electrical connector panel, shown in Figure 1-2, contains the
electrical connections for external inlets and outlets. The connectors are
described briefly here and in detail in the Installation chapter of this manual.
CAUTION: The power cable must be disconnected to fully
Access: To access the electrical connector panel, or the sensor block,
the control panel doubles as a door that can be unbolted and swung open.
Electrical Connections: The electrical connections on the electrical
connector panel are described briefly here, and in more detail in chapter 3
Installation.
•
•
Recognizing Difference Between LCD &
Equipment Interface
remove power from the instrument.
Power Connection
Analog Outputs
Teledyne Analytical Instruments
115 or 230 V dc, 50 or 60 Hz.
0-1 V dc concentration plus 0-1 V dc
range ID, and isolated 4-20 mA dc plus
4-20 mA dc range ID.
Introduction 1
1-5