GB1374717A - Method and apparatus for determing moisture content of tobacco - Google Patents

Method and apparatus for determing moisture content of tobacco

Info

Publication number
GB1374717A
GB1374717A GB5446372A GB5446372A GB1374717A GB 1374717 A GB1374717 A GB 1374717A GB 5446372 A GB5446372 A GB 5446372A GB 5446372 A GB5446372 A GB 5446372A GB 1374717 A GB1374717 A GB 1374717A
Authority
GB
United Kingdom
Prior art keywords
tobacco
hogshead
gantry
moisture content
feeding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5446372A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liggett Group LLC
Original Assignee
Liggett and Myers Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liggett and Myers Inc filed Critical Liggett and Myers Inc
Publication of GB1374717A publication Critical patent/GB1374717A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1374717 Electro-physical measurementmoisture LIGGET & MYERS Inc 24 Nov 1972 [3 Dec 1971] 54463/72 Heading G1N The moisture content of tobacco is measured by inserting a pair of electrodes and measuring the current in phase with the applied voltage. As shown Fig. 1 the electrodes comprise stainless steel spikes 20 about a foot long, mounted on a gantry 14 with pneumatic actuators 18 whereby they can be forced through the walls of a hogshead into the tobacco. Photo-electric detectors 13 at the base of the gantry indicate when a hogshead is properly positioned. As shown in Fig. 2 the probes 20 are energized from an oscillator 50 through one of a range of series resistors Rs. The resulting I.R. drop is applied to a phase-sensitive detector 70 feeding a logarithmic converter 80 with an indicating meter 90. A more detailed circuit diagram is given in Fig. 3 (not shown) using a square wave oscillator (55) feeding an amplifier (A 1 ) with a feedback network (60) to generate sine waves. No advantage is suggested for this arrangement.
GB5446372A 1971-12-03 1972-11-24 Method and apparatus for determing moisture content of tobacco Expired GB1374717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20457771A 1971-12-03 1971-12-03

Publications (1)

Publication Number Publication Date
GB1374717A true GB1374717A (en) 1974-11-20

Family

ID=22758500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5446372A Expired GB1374717A (en) 1971-12-03 1972-11-24 Method and apparatus for determing moisture content of tobacco

Country Status (11)

Country Link
US (1) US3766471A (en)
JP (1) JPS4876594A (en)
AR (1) AR199888A1 (en)
BE (1) BE792234A (en)
BR (1) BR7208343D0 (en)
CA (1) CA984462A (en)
CH (1) CH549963A (en)
DE (1) DE2258961C3 (en)
FR (1) FR2164244A5 (en)
GB (1) GB1374717A (en)
NL (1) NL7216448A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002199A1 (en) * 1979-04-10 1980-10-16 D Steele Improvements relating to moisture meters of a type especially suitable for estimating the moisture content of organic materials

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909709A (en) * 1974-04-04 1975-09-30 Leroy J Maxon Conductivity measuring apparatus
CH572210A5 (en) * 1974-05-22 1976-01-30 Zellweger Uster Ag
JPS5540391U (en) * 1978-09-09 1980-03-15
US4259633A (en) * 1978-07-25 1981-03-31 Armstrong Cork Company Method and apparatus for measuring the moisture content of wood
US4358731A (en) * 1980-05-23 1982-11-09 Philip Morris Incorporated Apparatus and method for moisture measurement
US4692685A (en) * 1984-03-14 1987-09-08 Blaze Kevin L Electrical measuring apparatus, and methods for determining the condition or identity of biological material
NL8900930A (en) * 1989-04-13 1990-11-01 Rockwool Grodan Bv METHOD AND APPARATUS FOR MEASURING THE HUMIDITY OF AN ARTIFICIAL SUBSTRATE
US5212453A (en) * 1990-08-03 1993-05-18 Imko Micromodultechnik Gmbh Pulse echo method and apparatus for measuring the moisture content of materials
DE4334649C2 (en) * 1993-04-29 1995-02-23 Imko Intelligente Micromodule Probe for material moisture sensor
DE4424833C2 (en) * 1994-07-14 1998-12-17 Mannesmann Vdo Ag Circuit arrangement for measuring the resistance of a moisture sensor
DE19519823A1 (en) * 1995-05-31 1996-12-05 Bayer Ag Polyfunctional azo reactive dyes
US6107809A (en) * 1995-07-18 2000-08-22 Malcam Ltd. Device and method for determining the moisture content of tobacco
CA2288646A1 (en) * 1996-05-07 1997-11-13 Knox Security Engineering Corporation Moisture detecting devices such as for diapers and diapers having such devices
US6114863A (en) * 1998-04-29 2000-09-05 General Electric Company Method for determining the presence of water in materials
US6963205B2 (en) * 2002-08-21 2005-11-08 Lundstrom John W Electrically measuring soil dry density
CA2638553C (en) * 2008-08-07 2017-04-25 Sipco Pty Ltd. An apparatus and method for identifying and marking bales of bulk material such as fodder bales that have particular characteristics
DE102010038890A1 (en) * 2010-08-04 2012-02-09 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance for drying items of laundry and method for determining a measured quantity correlated with a degree of drying of the items of laundry
US10107709B2 (en) * 2014-11-05 2018-10-23 Sears Brands, L.L.C. Water sensors with multi-value outputs and associated systems and methods

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661734A (en) * 1945-09-06 1953-12-08 Hartford Nat Bank & Trust Co Arrangement for recording variations in the electrical resistance of the human body
US3071967A (en) * 1958-04-11 1963-01-08 Corning Glass Works Electrical measuring and control apparatus and a glass press embodying the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002199A1 (en) * 1979-04-10 1980-10-16 D Steele Improvements relating to moisture meters of a type especially suitable for estimating the moisture content of organic materials

Also Published As

Publication number Publication date
US3766471A (en) 1973-10-16
DE2258961B2 (en) 1974-11-28
DE2258961A1 (en) 1973-06-20
BR7208343D0 (en) 1973-09-13
DE2258961C3 (en) 1975-07-17
NL7216448A (en) 1973-06-05
BE792234A (en) 1973-03-30
CH549963A (en) 1974-06-14
FR2164244A5 (en) 1973-07-27
AR199888A1 (en) 1974-10-08
CA984462A (en) 1976-02-24
JPS4876594A (en) 1973-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees