Teledyne 3010TB - Split architecture trace oxygen analyzer - Manual (Page 77)

Oxygen Analyzer Part II: Analysis Unit
Part II: 4-1 Teledyne Analytical Instruments
Operation
4.1 Introduction
All operation (except observing the flowmeter), including testing, and
configuring the analyzer to your process/application, is performed from the
Control Unit and is described in Part I, Chapter 4 Operation, of this manual.
To take advantage of the automatic calibration feature, the proper
calibration gases must be connected to Zero and Span ports, and held within
the proper pressure range, as described in chapter 3 Installation. Calibration
gas considerations are reviewed in section 4.3.
Testing consists mostly of running the built-in Self Test, and checking
the status of the Micro-Fuel Cell sensor.
4.2 Flowmeter
Although all operation is controlled from the Control Unit, at times
during operation or setup it is necessary to observe the flowmeter, which is
located on the Analysis Unit. The flowmeter monitors the flow of gas past
the Micro-Fuel Cell sensor. The scale on the flowmeter is graduated from 0.2
to 2.4 standard liters per minute (SLPM). Flow readings between 0.1 and 2.4
SLPM are acceptable.
4.3 Calibration Gases
The calibration procedures are described in Part I: Control Units section
4.4, The Zero and Span Functions.
The analyzer is calibrated using zero and span gases. Any suitable
oxygen-free gas can be used for zero gas as long as it is known to be oxygen
free and does not react adversely with the sample system.
Although the instrument can be spanned using air, a span gas with a
known oxygen concentration in the range of 70–90% of full scale of the