[Code of Federal Regulations]

[Title 40, Volume 31]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR1065.248]



[Page 707]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 1065_ENGINE-TESTING PROCEDURES--Table of Contents

 

                    Subpart C_Measurement Instruments

 

Sec.  1065.248  Gas divider.



    (a) Application. You may use a gas divider to blend calibration 

gases.

    (b) Component requirements. Use a gas divider that blends gases to 

the specifications of Sec.  1065.750 and to the flow-weighted 

concentrations expected during testing. You may use critical-flow gas 

dividers, capillary-tube gas dividers, or thermal-mass-meter gas 

dividers. Note that your overall gas-divider system must meet the 

linearity verification in Sec.  1065.307.



                   CO and CO2 Measurements