Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 69)

Thermal Conductivity Analyzer Maintenance 5
5-3 Teledyne Analytical Instruments
5.4 Major Internal Components
The Cell Compartment and Front Panel PCBs are accessed by un-
latching and swinging open the front panel, as described earlier. The
balance of the PCBs are accessed by removing the rear panel retaining
screws and sliding out the entire subassembly. See Figure 5-3, below. The
major electronic components locations are shown in Figure 5-4 (with Cell
Compartment removed for clarity).
WARNING: SEE WARNINGS ON THE TITLE PAGE OF THIS
MANUAL.
The 2020 contains the following major components:
• Analysis Section
Cell Compartment
Cell Block
• Power Supply
• Preamp and Motherboard with Microcontroller
• Display Board and Displays
5 digit LED meter
2 line, 20 character, alphanumeric, VFD display
• Rear Panel Board.
5.5 Voltage Selections
There is a switch on the interface board, inside the instrument, that
selects the working voltage between 230/115 VAC.
Voltage Selector Switch
Make sure the switch is in the proper position before
powering the instrument.
230V
115V