Invention Grant
US08823377B2 Method and apparatus for varying adaptively pulse interval in NMR-based water content measurement
有权
在基于NMR的水含量测量中改变自适应脉冲间隔的方法和装置
- Patent Title: Method and apparatus for varying adaptively pulse interval in NMR-based water content measurement
- Patent Title (中): 在基于NMR的水含量测量中改变自适应脉冲间隔的方法和装置
-
Application No.: US13818823Application Date: 2011-08-30
-
Publication No.: US08823377B2Publication Date: 2014-09-02
- Inventor: Veli-Pekka Viitanen , Sami Virtanen
- Applicant: Veli-Pekka Viitanen , Sami Virtanen
- Applicant Address: FI Vantaa
- Assignee: Metso Automation Oy
- Current Assignee: Metso Automation Oy
- Current Assignee Address: FI Vantaa
- Agency: Oliff PLC
- Priority: FI20105916 20100831
- International Application: PCT/FI2011/050754 WO 20110830
- International Announcement: WO2012/028786 WO 20120308
- Main IPC: G01V3/00
- IPC: G01V3/00 ; G01R33/383 ; G01N24/08 ; G01R33/44
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.
Public/Granted literature
- US20130147482A1 METHOD AND APPARATUS FOR VARYING ADAPTIVELY PULSE INTERVAL IN NMR-BASED WATER CONTENT MEASUREMENT Public/Granted day:2013-06-13
Information query
