Teledyne 2000A-EU - General purpose thermal conductivity analyzer - Manual (Page 13)

1-5
Thermal Conductivity Analyzer Introduction 1
Teledyne Analytical Instruments
• Escape Moves VFD back to the previous screen in a series. If
none remains, returns to the Analyze screen.
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 trace readout from 0-9999 ppm or a continuous
percent readout from 1-100 %. It is accurate across all analysis ranges.
Alphanumeric Interface Screen: The VFD screen is an easy-to-use
interface between operator and analyzer. It displays values, options, and
messages that give the operator immediate feedback.
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 the thermal conductivity sensor or the
front panel electronics, 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 electronics circuit board requires unfasten-
ing rear panel screws and sliding the electronics drawer out of the case.
(See chapter 5.)
CAUTION: The Access door must be closed and latched for
CE mark compliance to be in effect.
1.6 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.
1.7 Rear Panel (Equipment Interface)
All electrical inputs and outputs to the 2000A are made through rear-
panel connectors. The connectors are described briefly here and in detail in
chapter 3, Installation.