GB1067779A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1067779A – Probe transducer
– Google Patents

GB1067779A – Probe transducer
– Google Patents
Probe transducer

Info

Publication number
GB1067779A

GB1067779A
GB31015/64A
GB3101564A
GB1067779A
GB 1067779 A
GB1067779 A
GB 1067779A
GB 31015/64 A
GB31015/64 A
GB 31015/64A
GB 3101564 A
GB3101564 A
GB 3101564A
GB 1067779 A
GB1067779 A
GB 1067779A
Authority
GB
United Kingdom
Prior art keywords
gauges
resistance
type
pair
rod
Prior art date
1963-10-02
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
GB31015/64A
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.)

North American Aviation Corp

Original Assignee
North American Aviation Corp
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.)
1963-10-02
Filing date
1964-08-04
Publication date
1967-05-03

1964-08-04
Application filed by North American Aviation Corp
filed
Critical
North American Aviation Corp

1967-05-03
Publication of GB1067779A
publication
Critical
patent/GB1067779A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

239000000523
sample
Substances

0.000
title
abstract
3

239000004065
semiconductor
Substances

0.000
abstract
2

230000001419
dependent effect
Effects

0.000
abstract
1

239000012530
fluid
Substances

0.000
abstract
1

239000000463
material
Substances

0.000
abstract
1

230000035945
sensitivity
Effects

0.000
abstract
1

Classifications

G—PHYSICS

G01—MEASURING; TESTING

G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid

G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically

G01L23/18—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by resistance strain gauges

G—PHYSICS

G01—MEASURING; TESTING

G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means

G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means

G01L9/0002—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using variations in ohmic resistance

G—PHYSICS

G01—MEASURING; TESTING

G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE

G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning

G01L9/06—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices

G01L9/065—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices with temperature compensating means

Abstract

1,067,779. Measuring pressure electrically. NORTH AMERICAN AVIATION Inc. Aug. 4, 1964 (Oct. 2, 1963], No. 31015/64. Heading G1N. Compressive stress produced in a rod 28, Fig. 1, forming part of a probe 2, by a fluid pressure applied to its end 38 is measured by semi-conductor strain gauges 22 mounted on a portion of the rod having a reduced cross-section, the gauges being arranged in a bridge so as to compensate for temperature dependent errors in the output signals of the gauges. For use in a rocket engine thrust chamber, the probe may be replaceable and be of a material which erodes at the same rate as does the chamber wall to ensure a flush surface at 4, thereby avoiding hot spots, etc. In one embodiment Fig. 3 (not shown) two p-type semi-conductor gauges form one pair of opposite bridge arms, and two n-type form the other pair, the two types giving opposite changes in resistance for a given strain change, and all the gauges having matched thermal resistance coefficients. Further, Fig. 4 (not shown) correction for resistance changes produced by differences in the thermal expansions of the p-type gauges and of the rod is made by having the two p-type gauges in one pair of arms, and two straininsensitive gauges in the other pair. The thermal coefficient of resistance of the insensitive gauges is chosen to produce a resistance change therein which is equal to the difference between the resistance changes produced in the p-type gauges by the said differential expansion and by their own thermal coefficient of resistance. A third embodiment Fig. 5 (not shown) has one p-type gauge in each arm, one pair being mounted parallel to the rod and the other pair being mounted transverse to it, so that the pairs are respectively axially compressed and extended, the gauges all having matched thermal resistive coefficients which therefore cancel, and also having strain-resistance coefficients of the same sign (all being p-type) so that errors due to the above stated difference in thermal expansions also cancel. The bridge supply is a constant current source so that by means of a resistor across it (R sb , Fig. 2, not shown) the sensitivity of the bridge may be adjusted. The transducer assembly may be cooled by ducts 40, 42, etc.

GB31015/64A
1963-10-02
1964-08-04
Probe transducer

Expired

GB1067779A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US313276A

US3298233A
(en)

1963-10-02
1963-10-02
Probe transducer

Publications (1)

Publication Number
Publication Date

GB1067779A
true

GB1067779A
(en)

1967-05-03

Family
ID=23215079
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB31015/64A
Expired

GB1067779A
(en)

1963-10-02
1964-08-04
Probe transducer

Country Status (2)

Country
Link

US
(1)

US3298233A
(en)

GB
(1)

GB1067779A
(en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE2237826A1
(en)

1971-08-01
1973-03-01
Toyoda Machine Works Ltd

LOAD CONVERTER

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2327935A
(en)

1940-02-23
1943-08-24
Jr Edward E Simmons
Explosion pressure gauge

US2472045A
(en)

1945-12-12
1949-05-31
Baldwin Locomotive Works
Fluid pressure measuring device

US2867707A
(en)

1956-02-17
1959-01-06
Revere Corp America
Electric weighing cell

US3149488A
(en)

1962-08-13
1964-09-22
Gulton Ind Inc
Strain gauge measuring apparatus

1963

1963-10-02
US
US313276A
patent/US3298233A/en
not_active
Expired – Lifetime

1964

1964-08-04
GB
GB31015/64A
patent/GB1067779A/en
not_active
Expired

Also Published As

Publication number
Publication date

US3298233A
(en)

1967-01-17

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