公开(公告)号：CA3005371A1

公开(公告)日：2019-02-18

申请号：CA3005371

申请日：2017-08-18

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI

IPC: G01N13/00

Abstract: According to an example aspect of the present invention, there is provided analyzing fault gas concentrations in a liquid. Concentration of at least one dissolved fault gas in the liquid is measured at least at two temperatures. Disturbing gas contribution is determined in at least one temperature on the basis of the fault gas concentration measurements. Fault gas concentrations are analyzed by compensating fault gas concentrations on the basis of the determined disturbing gas contribution.

公开(公告)号：FI20105980A0

公开(公告)日：2010-09-23

申请号：FI20105980

申请日：2010-09-23

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI ,  PAKARINEN JANI

IPC: H01F20100101 ,  G01R20100101

Abstract: The invention relates to an electromagnet and a method manufacturing the same. The electromagnet includes a frame having a volume within, and a conductive wiring wound around the frame. In accordance with the invention the magnet includes at least two circular grooves having two walls parallel to the each other and perpendicular to the longitudinal axis of the frame, at least two wire stacks each including at least one substack, wherein the wire has a cross section, at least one of the walls separating the two circular grooves, and jump wiring interconnecting the stacks so that contributions from jump wires of the adjacent stacks to total axial directional current are cancelled in average by the current of the return current wire, such that their contribution to the resulting magnetic field at the sample volume is minimized.

公开(公告)号：FI20105916A0

公开(公告)日：2010-08-31

申请号：FI20105916

申请日：2010-08-31

Applicant: VAISALA OYJ

Inventor： VIITANEN VELI-PEKKA ,  VIRTANEN SAMI

Abstract: The invention relates to a NMR method for determining moisture content of a sample, in which method a sample is subjected to a magnetic DC-field, the sample under magnetic DC-field is subjected to a sequence of excitation pulses in RF-frequency with pulse interval for exciting hydrogen nuclei, and NMR signal of the excited hydrogen nuclei is measured. In accordance with the invention spin-lattice relaxation time is estimated for the sample, and pulse interval is adjusted longer than the estimated spin-lattice relaxation time.

公开(公告)号：FI127084B

公开(公告)日：2017-11-15

申请号：FI20145729

申请日：2014-08-18

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI ,  VIITANEN VELI-PEKKA

IPC: G01N1/22 ,  B01D19/00 ,  G01N33/28

公开(公告)号：FI20105917A0

公开(公告)日：2010-08-31

申请号：FI20105917

申请日：2010-08-31

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI ,  VIITANEN VELI-PEKKA

Abstract: A Nuclear Magnetic Resonance (NMR) apparatus and method for measuring the water content of samples has a device to produce a main magnetic field; a sample receiving space within a main magnetic field; a device to excite a measurable RF magnetization to a sample placed into the sample receiving space at an operating frequency defined by the main magnetic field; a device to measure the RF signal produced by the excited sample; and a device to determine the water content in the sample based on the RF signal. The sample receiving space is capable of accommodating a sample having a volume of at least 0.5 dm3, and the device to produce a main magnetic field has a resistive electromagnet which is adapted to produce a main magnetic field corresponding to an operating frequency of 400-2000 kHz.

公开(公告)号：CA2955112C

公开(公告)日：2022-07-19

申请号：CA2955112

申请日：2015-08-11

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI ,  VIITANEN VELI-PEKKA

IPC: G01N1/28 ,  B01D19/00 ,  G01N33/28

Abstract: The present invention concerns asystem (1) for extracting gas or gas mixtures from a liquid for performing dissolved gas or gas mixture analysis, the system (1) comprising a container (2) for storing a liquid and/or a gas or gas mixture, a liquid pump (3) which is connected to the container (2), a means for feeding the system (1) with a liquid and emptying the system (1) of the liquid, a gas analyzer which is connected to the container (2), and a piping (14) which is connected to the container (2), and wherein the piping (14), the liquid pump (3) and the container (2) are configured to circulate the liquid. The invention also concerns a method for extracting gas or gas mixtures from a liquid for performing dissolved gas or gas mixture analysis.

公开(公告)号：FI128224B

公开(公告)日：2020-01-15

申请号：FI20105917

申请日：2010-08-31

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI ,  VIITANEN VELI-PEKKA

IPC: G01R33/381 ,  G01N24/08 ,  G01R33/24 ,  G01R33/28 ,  G01R33/44

Abstract: Keksintö koskee ydinmagneettiresonanssaittestoa ja menetelnää näytteiden vesipitosuuden mttaamiseksL Laitteisto käsittää väflneet päämagneettikentän aikaansaamiseksi; päämagneettikentän sisäflä o’evan näytteen vastaanottotUan; väineet mitattavissa oevan RRmagnetoinnin virittämiseksi mainittuun näytteen vastaanottotHaan asetettuun näytteeseen päämagneettikentän määr[tt&emäHä toimintataajuudefla; väHneet virittyneen näytteen tuottaman RFsignaan mittaamseksi, ja vä’ineet näytteen suhteeHisen vespitoisuuden määrittämseksi RFsignaaHn perusteefla. Keksnnön mukaan näytteen vastaanottotilaan mahtuu näyte, jonka tUavuus on vähintään 0,5 dm3, ja väHneet päämagneettikentän aikaansaamiseksi käsittävät resistiivisen sähkömagneetin, joka on sovtettu aikaansaamaan päärnagneettikenttä, joka vastaa 400—20O0 kHz:n tomntataajuutta. Keksintö mahdoWstaa kustannustehokkaampien ja kevyempien ydinmagneettresonanssUaftteistojen rakentamisen kosteuden mittaamiseksL

公开(公告)号：CA3005371C

公开(公告)日：2021-06-15

申请号：CA3005371

申请日：2017-08-18

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI

IPC: G01N13/00

Abstract: According to an example aspect of the present invention, there is provided analyzing fault gas concentrations in a liquid. Concentration of at least one dissolved fault gas in the liquid is measured at least at two temperatures. Disturbing gas contribution is determined in at least one temperature on the basis of the fault gas concentration measurements. Fault gas concentrations are analyzed by compensating fault gas concentrations on the basis of the determined disturbing gas contribution.

公开(公告)号：CA2955112A1

公开(公告)日：2016-02-25

申请号：CA2955112

申请日：2015-08-11

Applicant: VAISALA OYJ

Inventor： VIRTANEN SAMI ,  VIITANEN VELI-PEKKA

IPC: G01N1/28 ,  B01D19/00 ,  G01N33/28

Abstract: The present invention concerns asystem (1) for extracting gas or gas mixtures from a liquid for performing dissolved gas or gas mixture analysis, the system (1) comprising a container (2) for storing a liquid and/or a gas or gas mixture, a liquid pump (3) which is connected to the container (2), a means for feeding the system (1) with a liquid and emptying the system (1) of the liquid, a gas analyzer which is connected to the container (2), and a piping (14) which is connected to the container (2), and wherein the piping (14), the liquid pump (3) and the container (2) are configured to circulate the liquid. The invention also concerns a method for extracting gas or gas mixtures from a liquid for performing dissolved gas or gas mixture analysis.