Teledyne T400, Руководство пользователя, Страница: 89 / 177

083730400A DCN8130 Teledyne API – Model T400 O
3
Analyzer 87
4 CALIBRATION
This Section is organized into subsections as follows:
SECTION 4.1 Important Precalibration Information: contains important information you
should know before calibrating the instrument.
SECTION 4.2 Calibration Procedures: provides procedures for both calibration and
calibration checks of basic and valve option configurations.
SECTION 4.3 Automatic Zero/Span Cal/Check (Auto Cal): describes the procedure for
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).
SECTION 4.4 Calibration Quality: describes how to evaluate the quality of each
calibration.
4.1 IMPORTANT PRECALIBRATION INFORMATION
Note
A start-up period of 4-5 hours is recommended prior to
calibrating the analyzer.
4.1.1 C
ALIBRATION
R
EQUIREMENTS
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
ERO
A
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
3
measuring devices, zero air should be:
• Devoid of O
3
and Mercury Vapor
• 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.