Calibration; Important Precalibration Information; Calibration Requirements; Zero Air - Teledyne T400 User Manual

4

CALIBRATION

This Section is organized into subsections as follows:
SECTION 4.1 Important Precalibration Information: contains important information you
SECTION 4.2 Calibration Procedures: provides procedures for both calibration and
SECTION 4.3 Automatic Zero/Span Cal/Check (Auto Cal): describes the procedure for
SECTION 4.4
4.1

IMPORTANT PRECALIBRATION INFORMATION

Note
4.1.1 C
ALIBRATION
Calibration equipment and supplies include, but are not limited to, the following:
Zero-air source
•
• Span gas source
• Gas lines - All Gas lines should be PTFE (Teflon) or FEP
Optionally, a recording device such as a strip-chart recorder and/or data logger. (For
•
electronic documentation, the internal data acquisition system DAS can be used by
configuring the Datalogger throught the Setup>Data Logging menu, Section 2.5.1).
Traceability Standards
•
4.1.2 Z A
ERO IR
Zero air or zero calibration gas is defined as a gas that is similar in chemical composition
to the measured medium but without the gas to be measured by the analyzer.
For O measuring devices, zero air should be:
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Devoid of O
•
• Have a dew point of -20°C
Devices that condition ambient air by drying and removing any pollutants, such as the
Teledyne API' Model 701 Zero Air Module, are ideal for producing Zero Air.
083730400A DCN8130
should know before calibrating the instrument.
calibration checks of basic and valve option configurations.
using the AutoCal feature to check calibration or to calibrate the
instrument. (The AutoCal feature requires that either the zero/span valve
option or the internal span gas generator option be installed and operating).
Calibration Quality: describes how to evaluate the quality of each
calibration.
A start-up period of 4-5 hours is recommended prior to
calibrating the analyzer.
R
EQUIREMENTS
and Mercury Vapor
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Teledyne API – Model T400 O Analyzer
3
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