DE9206428U1 - Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances - Google Patents

Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances

Info

Publication number
DE9206428U1
DE9206428U1 DE9206428U DE9206428U DE9206428U1 DE 9206428 U1 DE9206428 U1 DE 9206428U1 DE 9206428 U DE9206428 U DE 9206428U DE 9206428 U DE9206428 U DE 9206428U DE 9206428 U1 DE9206428 U1 DE 9206428U1
Authority
DE
Germany
Prior art keywords
resistance
electrical resistance
instrument
interfaces
gel
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 - Lifetime
Application number
DE9206428U
Other languages
German (de)
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.)
Thissen Rudolf Drmed 5143 Wassenberg De
Original Assignee
Thissen Rudolf Drmed 5143 Wassenberg De
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 Thissen Rudolf Drmed 5143 Wassenberg De filed Critical Thissen Rudolf Drmed 5143 Wassenberg De
Priority to DE9206428U priority Critical patent/DE9206428U1/en
Publication of DE9206428U1 publication Critical patent/DE9206428U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/22—Measuring resistance of fluids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Description

BeschreibungDescription

Titel :Title:

Instrument zur Bestimmung des elektrischen Widerstands von Oberflächen, Grenzflächen, Körperflüssigkeiten und flüssigen, gelartigen sowie festen Stoffen.Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances.

Stand der Technik :State of the art :

Zur Messung des elektrischen Widerstands sind Ohmmeter verschiedenster Bauart und Technologie bekannt.Ohmmeters of various designs and technologies are known for measuring electrical resistance.

Kritik am Stand der Technik !Konventionelle Digitalinstrumente zur Widerstandsmessung besitzen einen Meßbereich von maximal 30 MOhm,Criticism of the state of the art! Conventional digital instruments for resistance measurement have a maximum measuring range of 30 MOhm,

Problem :Issue:

Zur Ermittlung des elektrischen Widerstands von Medien mit sehr hohem spezifischen Widerstand ( z.B. Hautwiderstand ) reicht ein Meßbereich von 30 MOhm oft nicht aus.To determine the electrical resistance of media with very high specific resistance (e.g. skin resistance), a measuring range of 30 MOhm is often not sufficient.

Problemlösung Das hier vorgestellte Instrument enthält einen integrierten Shunt - Widerstand RProblem solution The instrument presented here contains an integrated shunt resistor R

( hier R = 20 MOhm ) in Parallelschaltung(here R = 20 MOhm) in parallel connection

zum variablen Meßwiderstand R .to the variable measuring resistor R .

Die Anordnung gestattet somit die indirekte Messung von ohmschen Widerständen R bis 4oo MOhm, wie dies z.B. bei Diabetikern zur Bestimmung des Hautwiderstands am Fuß not wendig ist.The arrangement thus allows the indirect measurement of ohmic resistances R up to 4oo MOhm, as is necessary, for example, for diabetics to determine the skin resistance on the foot.

Erreichte Vorteile Die Neuerung gestattet die Messung großer ohmscher Widerstände ( hier bis R = 400M0hm ).Achieved advantages The innovation allows the measurement of large ohmic resistances (here up to R = 400M0hm).

Der Zusammenhang der auf dem LC - Display dargestellten Zahlenwerte und den MeßwiderständenThe relationship between the numerical values shown on the LC display and the measuring resistances

R ist dabei nicht linear.
&khgr;R is not linear.
&khgr;

Die nachfolgende Formel zeigt die Relation zwischen angezeigtem Gesamtwiderstand R und dem Meßwiderstand R .The following formula shows the relationship between the displayed total resistance R and the measuring resistance R .

R - R
&khgr; —R - R
&khgr;—

R - g R - g

R-R
s gRR
sg

Damit ist das Instrument u.a. zur Widerstandsmessung in folgenden Fällen geeignet :This makes the instrument suitable for measuring resistance in the following cases:

- in der Medizin:- in the medicine:

Bestimmung des elektrischen Hautwiderstandes zur Überprüfung der Schweißsekretion ( Diabetischer Fuß ) .Determination of electrical skin resistance to check sweat secretion (diabetic foot).

Bestimmung des elektrischen Widerstandes von Körperfliissigkeiten ( Speichel, Urin.Blut, Liquor cerebrospinalis, Cervix - und Vaginal sekret, Sperma ) zur Diagnostik bestimmter Krankheiten, Reaktionslagen, Biorhythmen und Funkt ionszuständen.Determination of the electrical resistance of body fluids (saliva, urine, blood, cerebrospinal fluid, cervical and vaginal secretions, sperm) for the diagnosis of certain diseases, reaction states, biorhythms and functional states.

Bestimmung des elektrischen Hautwiderstandes zur Feststellung des Hauttyps ( trocken / normal/ feucht ) als Entscheidungsgrundlage für eine externe Salbenbehandlung,Determination of the electrical skin resistance to determine the skin type (dry/normal/moist) as a basis for decision for external ointment treatment,

- in der Kosmetik :- in cosmetics:

Hauttyp - Diagnostik ( trocken / normal / feucht ),Skin type - diagnostics (dry / normal / moist),

r...im Bauwesen :r...in construction:

Bestimmung der Feuchtigkeit eines Baukörpers per Messung des elektrischen Widerstandes desselben ( z.B. Feuchtigkeit des Mauerwerks infolge Bodennä'sse, Schlagregen oder defekte Wasserrohre ).Determination of the moisture content of a building by measuring its electrical resistance (e.g. moisture in the masonry due to wet ground, driving rain or defective water pipes).

Claims (1)

SchuC&zgr;anspTücheProtective cloths Oberbegriff : Instrument zur Bestimmung des elektrischenGeneric term: Instrument for determining the electrical Widerstandes von Oberflächen, Grenzflächen, Kb'rperflüssigkeiten und flüssigen, gelartigen sowie festen Stoffen.Resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances. Kennzeichnender Teil : dadurch gekennzeichnet,Characteristic part: characterized by daß ein elektronischer Widerstandsmeßkreis mit LC - Display Verwendung findet, an dessen Meßeingang ein Shunt - Widerstand R ( hier = 20M0hm ) geräteintern permanent parallelgeschaltet ist, wodurch eine indi rekte Messung des elektrischen Widerstandes R bis zu Werten von R = 400M0hm ermög-that an electronic resistance measuring circuit with LC display is used, to whose measuring input a shunt resistor R (here = 20M0hm) is permanently connected in parallel inside the device, which enables an indirect measurement of the electrical resistance R up to values of R = 400M0hm. X XXX licht wird, wie dies z.B. bei Diabetikern zur Bestimmung des Hautwiderstandes am Fuß erforderlich ist.light, as is necessary, for example, for diabetics to determine the skin resistance on the foot. Der Zusammenhang zwischen angezeigtem Zahlenwert und dem Meßwiderstand R kann über eine The relationship between the displayed numerical value and the measuring resistance R can be determined via a Grafik oder eine Wertetabelle hergestellt werden.A graph or a table of values can be created.
DE9206428U 1992-05-13 1992-05-13 Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances Expired - Lifetime DE9206428U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9206428U DE9206428U1 (en) 1992-05-13 1992-05-13 Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9206428U DE9206428U1 (en) 1992-05-13 1992-05-13 Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances

Publications (1)

Publication Number Publication Date
DE9206428U1 true DE9206428U1 (en) 1992-09-24

Family

ID=6879432

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9206428U Expired - Lifetime DE9206428U1 (en) 1992-05-13 1992-05-13 Instrument for determining the electrical resistance of surfaces, interfaces, body fluids and liquid, gel-like and solid substances

Country Status (1)

Country Link
DE (1) DE9206428U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018130309A1 (en) 2017-01-16 2018-07-19 Neubourg Skin Care Gmbh & Co. Kg Device for the diagnosis of a diabetic foot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018130309A1 (en) 2017-01-16 2018-07-19 Neubourg Skin Care Gmbh & Co. Kg Device for the diagnosis of a diabetic foot

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