Operations; Front Panel; Function Switch; Zero Control - Teledyne 275R Instruction Manual

composition of the sample. Gas compositions for which your analyzer is
intended are hydrogen and carbon dioxide (0-100% H
carbon dioxide (0-100% air in CO
H with 0-10% impurities).
2
each range when a zero gas is introduced into the analyzer. See Appendix:
Specifications Specifications
Specifications Specifications for the recommended zero gas. Specifications
the known concentration of a span gas present in the measuring chamber.
See Appendix: Specifications
ing on the analyzer. The indicator lamp on the front panel shows when the
* * * * *
heater is on, and when it is flashing the cell is up to its operating tempera-
ture.
zero) gas flow through the measuring chamber.

Operations

Operations
Operations Operations Operations
3.1 3.1 3.1

Front Panel

Front Panel Front Panel
3.1 3.1 Front Panel Front Panel

3.1.1 Function Switch

3.1.1 3.1.1 3.1.1 3.1.1 Function Switch Function Switch Function Switch Function Switch
This switch is used to select the gas mixture range to agree with the
3.1.2 3.1.2 3.1.2

3.1.2 Zero Control

3.1.2 Zero Control Zero Control Zero Control Zero Control
The zero control potentiometers are used to adjust the zero reading for

3.1.3 Span Control

3.1.3 3.1.3 3.1.3 3.1.3 Span Control Span Control Span Control Span Control
The span control potentiometers are used to adjust the meter to read
Appendix: Specifications Appendix: Specifications
Appendix: Specifications Appendix: Specifications for the recommended span gas.
3.1.4

3.1.4 Cell Temperature

3.1.4 Cell Temperature Cell Temperature Cell Temperature
3.1.4 3.1.4 Cell Temperature
Generally the cell temperature is stable within 30 minutes of switch-
3.1.5 3.1.5

Flowmeter

Flowmeter
3.1.5 3.1.5 3.1.5 Flowmeter Flowmeter Flowmeter
The flowmeter is used to control and adjust the sample (or span or
TELEDYNE ANALYTICAL INSTRUMENTS
in CO
2
), or purity of hydrogen (e.g. 90-100%
2
Operations 3.0 Operations 3.0 Operations 3.0
Operations 3.0 Operations 3.0
), or air and
2
Appendix: Appendix: Appendix: Appendix:
3.1