Dr. Howard Castrup has a B.S. degree in Engineering, a PhD in Solid State Electronics and has been developing advanced measurement science techniques and methods for over forty years. He is one of the founders of uncertainty growth modeling and the originator of statistical measurement process control (SMPC). He is a major contributor to NASA Reference Publication 1342; the principal author of the NCSLI Recommended Practice on Calibration Intervals (RP-1); and has published numerous papers and articles on uncertainty analysis, measurement decision risk analysis, statistical process control, and calibration interval analysis. Dr. Castrup is a member of IEEE, ASQ, Sigma Pi Sigma, AIP, AAPT, and is the chairman of the NCSLI Metrology Practices Committee.  Click Here for a list of professional accomplishments.

Ms. Suzanne Castrup has B.S. and M.S. degrees in Mechanical Engineering and has over thirty years of hands-on experience in calibration and testing, both in the research and production environments. She has tested and evaluated numerous instruments and systems for measuring temperature, pressure, flow rate, mass and heat transfer rate in the petroleum industry and has considerable expertise interpreting and evaluating performance specifications for a wide variety of sensors, transducers and signal conditioners.  Ms. Castrup is a member of ASME, ISA and SPE and is currently the chair of the NCSLI  Uncertainty Analysis (RP-12) and Measurement Equipment Specifications (RP-5) committees.  She has also served as chair of the NCSLI Petroleum Industry Metrology Committee (1990 through 1991).   She has published numerous technical papers and holds several U.S. Patents relating to petroleum measurements and thermal recovery processes.  Click Here for a list of professional accomplishments.