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 substancesInfo
- 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
Links
- 210000001124 body fluid Anatomy 0.000 title claims description 4
- 239000010839 body fluid Substances 0.000 title claims description 4
- 239000007788 liquid Substances 0.000 title claims description 3
- 239000007787 solid Substances 0.000 title claims description 3
- 239000000126 substance Substances 0.000 title claims description 3
- 238000005259 measurement Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims 1
- 230000036555 skin type Effects 0.000 description 2
- 208000008960 Diabetic foot Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 1
- 210000003756 cervix mucus Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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)
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)
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 |
-
1992
- 1992-05-13 DE DE9206428U patent/DE9206428U1/en not_active Expired - Lifetime
Cited By (1)
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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