Teledyne 3000TA-XL-EU Operating Instructions Manual page 20

Introduction
Data Entry Keys: Six touch-sensitive membrane switches are used to
input data to the instrument via the alphanumeric VFD display:

Left & Right Arrows Select between functions currently
displayed on the VFD screen.

Up & Down Arrows Increment or decrement values of
functions currently displayed.

Enter Advances VFD display to the next screen in a series
or returns to the Analyze screen if none remain.

Escape Backs VFD display to the previous screen in a series
or returns to the Analyze screen if none remain.
Digital Meter Display: The meter display is a Light Emitting Diode
(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.
Needle Valve: Needle valve used to adjust flow of gas sample.
Flowmeter: Monitors the flow of gas past the sensor. Readout is 0.2 to
2.4 standard liters per minute (SLPM) of nitrogen.
Standby Button: The Standby button
outputs, but circuitry is still operating.
CAUTION: THE POWER CABLE MUST BE UNPLUGGED TO
FULLY DISCONNECT POWER FROM THE
INSTRUMENT. WHEN THE CHASSIS IS EXPOSED
OR WHEN THE ACCESS DOOR IS OPEN WHILE THE
POWER CABLE IS CONNECTED, USE EXTRA CARE
TO AVOID CONTACT WITH LIVE ELECTRICAL
CIRCUITS.
Access Door: For access to the Micro-Fuel Cell, 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
circuit board
Teledyne Analytical Instruments
3000TA-XL-EU
turns off the display and
4