Maths Halstensen

Faculty of Technology, Natural Sciences and Maritime Sciences
Department of Electrical engineering, Information Technology and Cybernetics
Campus Porsgrunn (B-249)
Process Analytical Technology PAT - CO2 capture - Multivariate data analysis - Multivariate regression modelling - chemometrics - Acoustic chemometrics - Process monitoring - Multivariate Image analysis - Raman Spectroscopy - NIR spectroscopy


- Teaching BSc, MSc and PhD level courses

- Research

- PhD student supervision

- ACRG Laboratory


Ph.D.  NTNU Norway, 2002  "Acoustic Chemometrics - Experimental multivariate sensor technology and development of system prototypes for industrial multi-phase characterisation: selected forays"

M.Sc. Process automation, Telemark University College, 1997

B.Sc. Industrial Electronics, Gjøvik University College, 1995


1.        Ingrid B. Haugland, Ole Kjos, Arne Røyset, Per Erik Vullum, Thor Aarhaug, Maths Halstensen ”Alumina Scale Composition and Growth Rate in Distribution Pipes”, book: Light Metals 2019, DOI: 10.1007/978-3-030-05864-7_86, January 2019

2.        Wathsala Jinadasa, K. Amila Chandra, Maths Halstensen “System Development for On-line Monitoring using Raman Spectroscopy for CO 2 Absorption by MEA”, Conference: Exergy Analysis for Combined Heat and Power (CHP) Plants, DOI: 10.3384/ecp18153328, November 2018.

3.        Wathsala Jinadasa, Klaus-J. Jens, Maths Halstensen, “Process Analytical Technology for CO2 Capture”, Book chapter in: “Carbon Dioxide Chemistry, Capture and Oil Recovery”, Publisher: IntechEditor: Iyad Karamé, Janah Shaya & Hassan SrourISBN: ISBN: 978-1-78923-575-3 Print ISBN: 978-1-78923-574-6, Aug. 2018

4.        Ingrid B. Haugland, Jana Chladek, Maths Halstensen, “A feasibility study of real-time monitoring techniques for scale deposition thickness in pneumatic conveying pipelines”, Particulate Science And Technology, Pages 481-488 | Published online: 16 Jan 2018

5.        Ingrid Bokn Haugland & Maths Halstensen, “A Technique for Obtaining Reference Measurements to Calibrate Deposition Models for Pipelines”, Chem. Eng. Technol., 41, No. 8, 1538–1543, 2018

6.        Wathsala Jinadasa, Klaus-J. Jens, Lars Erik Øi, Maths Halstensen, ‘Raman Spectroscopy as an Online Monitoring Tool for CO2 Capture Process: Demonstration Using a Laboratory Rig’, Article in Energy Procedia 114:1179-1194 · July 2017

DOI: 10.1016/j.egypro.2017.03.1282 · License: CC BY-NC-ND 4.0

7.        Maths Halstensen, Henrik Jilvero, Wathsala Jinadasa, Klaus-J. Jens, ‘Equilibrium Measurements of the NH 3 -CO 2 -H 2 O System: Speciation Based on Raman Spectroscopy and Multivariate Modeling’, Hindawi Journal of Chemistry, Volume 2017, Article ID 7590506, 13 pages

8.        Wathsala Jinadasa, Klaus-J. Jens, Carlos Pffeifer, Sara Ronasi, Carlos Barreto Solar, Maths Halstensen, ‘Principal Component Analysis Applied to CO 2 Absorption by Propylene Oxide and Amines’, Conference: 2016 9th EUROSIM Congress on Modelling and Simulation, At Oulu, Finland

DOI: 10.1109/EUROSIM.2016.134

9.        Henrik Jilvero, Klaus-J. Jens, Fredrik Normann, Klas Andersson, Maths Halstensen, Dag A. Eimer, Filip Johnsson, ‘Equilibrium measurements of the NH3–CO2–H2O system – measurement and evaluation of vapor–liquid equilibrium data at low temperatures’, Article in Fluid Phase Equilibria 385:237-247 · January 2015

DOI: 10.1016/j.fluid.2014.11.006

10.     Perera W, Halstensen M, Skeie NO, ‘

Prediction of Space Heating Energy Consumption in Cabins Based on Multivariate Regression Modelling’, International Journal of Modeling and Optimization 5(6):385-392 · January 2015

DOI: 10.7763/IJMO.2015.V5.493


11.     Halstensen M, Amundsen L, Arvoh BK. “3-way PLS regression and dual energy gamma densitometry for prediction of total volume fractions and enhanced flow regime identification in multiphase flow” Volume 40, Pages 133–141, 2014

12.     Jilvero H, Jens KJ, Normann F, Andersson K , Halstensen M, Eimer D, Johnsson F. Equilibrium Measurements of the NH3-CO2-H2O System Measurement and Evaluation of Vapor-liquid Equilibrium Data at Low Temperatures. Fluid Phase Equilibria, Volume 385, Pages 237-247, 2015

13.     Halstensen M, Felicia Nkem Ihunegbo, Chandana Ratnayake, Karl Sveinsvold. Online acoustic chemometric monitoring of fish feed pellet velocity in a pneumatic conveying system. Powder Technology, Volume 263, Pages 104–111, 2014

14.     Felicia Nkem Ihunegbo, Claas Wagner, Kim H. Esbensen, Maths Halstensen. Acoustic Chemometric At-Line Characterization for Monitoring Particle Size Fractions in Pneumatically Conveyed Biomass. Particulate science and technology,  Volume: 32   Issue: 1   Pages: 70-79, 2014

15.     Arvoh BK, Skeie N-O, Halstensen M. Estimation of liquid and interface levels in an oil/water/gas separator based on pressure measurements and regression modelling. Sep Purif Technol, Volume 107, Pages 204–210, 2013

16.     Arachchige, U. S.P.R., Nair, J. U., Mohsin, M., Halstensen, M., Melaaen, M. C., “Multivariate Data Analysis for Parameters Effect on Re-boiler duty-Post Combustion Chemical Absorption Process”  European Journal of Scientific Research, 95, No 2, p. 289-302, 2013

17.     Arachchige, U. S.P.R., Aryal N., Ghimire, P., Halstensen, M., Melaaen, M. C., “Multivariate Data Analysis for Parameters Effect on CO2 Removal Efficiency” Energy Procedia, Volume 37, Pages 2011–2020, 2013

18.     Felicia Nkem Ihunegbo, Maths Halstensen, Chandana Ratnayake. Acoustic chemometrics for on-line monitoring and end-point determination of fluidised bed drying. Powder Technology Volume 247, 69–75, 2013

19.     Claas Wagner, Felicia Nkem Ihunegbo, Maths Halstensen, Kim H. Esbensen. Acoustic chemometrics for material composition quantification in pneumatic conveying - The critical role of representative reference sampling. Powder Technology, Volume 237, Pages 506–513, 2013

20.     Halstensen M, Arvoh BK, Amundsen L, Hoffmann R. Online estimation of wax deposition thickness in single-phase sub-sea pipelines based on acoustic chemometrics: A feasibility study. FUEL, volume 105, p.718-727, 2013

21.     Michael Madsen, Felicia N. Ihunegbo, Jens Bo Holm-Nielsen, Maths Halstensen, Kim H. Esbensen. “Online near infrared monitoring of ammonium and dry matter in bioslurry for robust biogas production: a full-scale feasibility study” J. Near Infrared Spectrosc. 20, 635–645, 2012

22.     Arvoh B.K, Asdhal S, Rabe K, Halstensen M. Online estimation of reject gas flow rates in compact flotation units for produced water treatment: A feasibility study. Chemometr Intell Lab Syst, 114:87-98, 2012

23.     Felicia Nkem, Ihunegbo, Michael Madsen, Kim H. Esbensen, Jens Bo Holm-Nielsen, Maths Halstensen. Acoustic chemometric prediction of total solids in bioslurry: A full-scale feasibility study for on-line biogas process monitoring. Chemom. Intell. Lab. Syst. Volume 110, 135–143, 2012

24.     Arvoh BK, Asdhal S, Rabe K, Ergon R, Halstensen M. Online estimation of reject gas and liquid flow rates in compact flotation units for produced water treatment. Flow Meas Instrum, 24:63-70, 2012

25.     Arvoh BK, Hoffmann R, Valle A, Halstensen M. Estimation of volume fractions and flow regime identification in inclined pipes based on gamma measurements and multivariate calibration. J Chemometr 26:425-434, 2012

26.     Arvoh BK, Hoffmann R, Halstensen M. Estimation of volume fractions and flow regime identification in multiphase flow based on gamma measurement and multivariate calibration. Flow Meas Instrum, 23:56 -65, 2012

27.     Ergon R, M Halstensen and KH Esbensen. Model choice and squared prediction errors in PLS regression, Journal of Chemometrics, Vol. 25/6, 301-312, 2011

28.     Skeie, N. O., Halstensen, M., ‘Level estimation in oil/water separators based on multiple pressure sensors and multivariate calibration’ Journal of Chemometrics, Volume 24, Issue 7-8, p. 387-398, 2010

29.     Halstensen, M., Esbensen, K. H., ’Acoustic chemometric monitoring of chemical production processes’, Process Analytical Technology, 2nd Edition, Chapter 9, Wiley, 2010.  ISBN: 9780470722077

30.     B. Lie, D. Di Ruscio, R. Ergon, B. Glemmestad, M. Halstensen, F. Haugen, S. Mylvaganam, N.-O. Skeie, D. Winkler, ’Modeling, Identification and Control at Telemark University College’, Modelling Identification & Control, Vol. 30, No. 3, pp. 133-147, 2009

31.     Cecilia Arakaki, Chandana Ratnayake, Maths Halstensen “Online prediction of mass flow rate of solids in dilute phase pneumatic conveying systems using multivariate calibration “ Powder Technology, Volume: 195   Issue: 2   Pages: 113-118, 2009

32.     Halstensen M., Arakaki C., Ratnayake C., Datta B. K., ”Online prediction of mass flow rate of solids in dense phase pneumatic conveying systems using multiple pressure transmitters and multivariate calibration” Powder technology   Volume: 189   Issue: 3   Pages: 416-421, 2009

33.     Sergei V. Kucheryavski, Knut Kvaal, Maths Halstensen, Peter Paasch Mortensen, Casper K. Dahl, Pentti Minkkinen & Kim H. Esbensen, “Optimal Corrections for Digitalization and Quantification Effects in Angle Measure Technique (AMT) Texture Analysis” J. of chemometrics, Volume 22, Issue 11-12,  p. 722-737, 2008

34.     Knut Kvaal, Maths Halstensen, Andreas S. Flø, Sergei V. Kucheryavski, Peter Paasch Mortensen, Casper K. Dahl, Pentti Minkkinen & Kim Esbensen“eAMTexplorer: a software package for texture and signal characterization using Angle Measure Technique” J. of chemometrics,  Volume 22, Issue 11-12,  p. 717-721, 2008

35.     Halstensen M, Haug F. Highly interactive study skills course – Unstuck, 12th Annual SIGCSE Conference on Innovation and Technology in Computer Science Education proceedings, ITiCSE 2007, Dundee, Scotland, UK, June 25-27, 2007

36.     Halstensen, M., de Bakker, P.,Esbensen, K. H.,”Acoustic chemometric monitoring of an industrial granulation production process – a PAT feasibility study” Chemometrics and Intelligent Laboratory Systems 84, pages:88-97, 2006


37.     Halstensen, M., Esbensen, K., 'Acoustic chemometric monitoring of fluidized bed granualation', Powder handling & processing vol. 17 - no 4. July/August 2005

38.     Kupyna A, Rukke EO, Bryhn A, Halstensen M, Isaksson T. ‘Acoustic chemometrics for determination of skim milk in water – preliminary results’ 3rd Winter school on chemometrics WSC3 proceedings, Pushkinskie Gory, Russia, 2004

39.     Mylvaganam S, Datta U, Halstensen M, Mathiesen V. Multi sensor suite comprising active and passive ultrasonic transducers for monitoring solids flow and silo integrity. IEEE Symposium on Utrasonics, Volume 1,  689-692, 2003

40.     Halstensen, M., "Acoustic chemometric monitoring of fluidized bed granulation" Postec newsletter #21 2002/2003

41.     Ose, S., Halstensen, M., 'The use of acoustic chemometrics in powder techhnology' CHoPS-04 proceedings, Budapest, 2003

42.     Halstensen, M., 'Acoustic chemometrics - Experimental multivariate sensor technology and development of system prototypes for industrial multi-phase characterisation: selected forays'. PhD thesis, Telemark University College, January 14th 2002.

43.     Ergon, R., Halstensen, M., ' Dynamic system multivariate calibration based on multirate sampling data', Modelling Identification and control vol.22 No. 2, p.73-88, 2001

44.     Esbensen KH, Waskaas M, Matveyev IH, Wolden KE,  Lode JG, Lied TT, Halstensen M. ’ Feasibility of EMF-induced pipewall friction reduction by PLS2 intercalibration of acoustic chemometrics and reference laser velocimetry’ J.Chemometrics vol. 15, P. 241-263, 2001

45.     Ergon, R., Halstensen, M., ‘Dynamic system multivariate calibration with low-sampling-rate y data’ Journal of chemometrics, vol.14 P. 617-628, 2000

46.     Halstensen M., Esbensen K.H., ‘New developments in acoustic chemometric prediction of particle size distribution – the problem is the solution’. J. Chemometrics 14, 463-481, 2000

47.     Halstensen, M., ‘Acoustic chemometric prediction of particle size distribution’ POSTEC Newsletter 18 – 1999, P. 29-30

48.     Halstensen, M., Silva, S., Berdal, A., Hope, B., Esbensen K. H. ’ Acoustic chemometric prediction of particle size distribution’ Reliable flow of particulate solids III : proceedings from International Symposium Reliable Flow of Particulate Solids III REPOWFLO III, 11-13 August 1999

49.     Mylvaganam, S., Roth, H., Lindner, G., Halstensen, M., Engan, H.E., Esbensen, K, ‘Recent advances in gas sensing and gas density measurements using piez oelectric sensors’, 22nd Scandinavian Symposium on Physical Acoustics, 31 January- 3 February 1999

50.     Mylvaganam, S., Halstensen, M., Engan, H.E., Esbensen, K, ‘Gas density metering in ultrasonic gas flowmeters using impedance measurements and chemometrics’, IEEE Ultrasonics Symposium Proceedings, P. 435 - 439, ISSN 1051-0117, 1999

51.     Halstensen, M., de Silva, S., Esbensen, K.,’ Chemometrics in In-Line Monitoring of Processes’, Reliable flow of particulate solids III : proceedings, ISBN 82-7206.187-2, 1999

52.     Mylvaganam, S., Halstensen, M., Esbensen, K, ‘Gas density metering in ultrasonic gas flowmeters using impedance measurements and chemometrics’, IEEE transactions on ultrasonics, ferroelectrics, and frequency control, ISSN 0885-3010, 1999

53.     Esbensen K.H., Hope B, Lied T.T., Halstensen M, Gravermoen T, Sundberg K. ‘Acoustic chemometrics for fluid flow quantifications - II: A small constriction will go a long way’.  J. Chemometrics 13, 27:209-236, 1999

54.     Halstensen M., de Silva S.R., Esbensen, K.H. ‘Acoustic monitoring of pneumatic transport lines - from noise to information’. KONA Powder and particle #16, 8:170-178, 1998

55.     Esbensen KH, Halstensen M, Lied, TT, Saudland A, Svalestuen J, de Silva S, Hope, B. Acoustic chemometrics – from noise to information. Chemom. Intell. Lab. Syst. Volume: 44, Issue: 1-2, Pages: 61-76, 1998