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EPA Protocol Calibration Model 100E Instruction Manual
150 045150102 Rev XB1
Zero and span data are to be used to:
• Provide data to allow analyzer adjustment for zero and span drift;
• Provide a decision point on when to calibrate the analyzer;
• Provide a decision point on invalidation of monitoring data.
Items 1 and 2 are described in detail in Subsection 9.1.3 of Section 2.0.9 (Q.A.
Handbook). Item 3 is described in Subsection 9.1.4 of the same section.
Refer to the Troubleshooting Chapter 11 of this manual if the instrument is not within the
allowed variations.
8.3.1.
Zero/Span Check Procedures
The Zero and Span calibration can be checked a variety of different ways. They include:
• Manual Zero/Span Check - Zero and Span can be checked from the front panel
keyboard. The procedure is in Section 7.3 and 7-6 of this manual.
• Automatic Zero/Span Checks - After the appropriate setup, Z/S checks can be
performed automatically every night. See Section 7.8 of this manual for setup and
operation procedures.
• Zero/Span checks via remote contact closure = Zero/Span checks can be initiated
via remote contact closures on the rear panel. See Section 7.7.1 of this manual.
• Zero/Span via RS-232 port - Z/S checks can be controlled via the RS-232 port. See
Section6.11 and Appendix A-6 of this manual for more details.
8.4. Precisions Calibration Procedures and Checks
Calibration must be performed with a calibrator that meets all conditions specified in
Subsection 2.9.2 (Q.A. Handbook). The user should be sure that all flow meters are
calibrated under the conditions of use against a reliable standard. All volumetric flow rates
should be corrected to 25
o
C (77
o
F) and 760mm (29.92in) Hg. Make sure the calibration
system can supply the range of the concentration at a sufficient flow over the whole range
of concentration that will be encountered during calibration.
All operational adjustments to the M100E should be completed prior to the calibration. The
following software features must be set into the desired state before calibration.
• Single range selection. See Section 6.5.2 of this manual. If the instrument will be
used more than one range, it should be calibrated separately on each applicable
range.
• Automatic temperature/pressure compensation. See Section 6.6.
• Alternate units, make sure ppb units are selected for EPA monitoring. See Section
6.5.6.