GB589276A - Improved apparatus for the counting and measurement of current impulses of short duration - Google Patents

Improved apparatus for the counting and measurement of current impulses of short duration

Info

Publication number
GB589276A
GB589276A GB7154/45A GB715445A GB589276A GB 589276 A GB589276 A GB 589276A GB 7154/45 A GB7154/45 A GB 7154/45A GB 715445 A GB715445 A GB 715445A GB 589276 A GB589276 A GB 589276A
Authority
GB
United Kingdom
Prior art keywords
channel
vessel
plate
diaphragm
plunger
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
GB7154/45A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB589276A publication Critical patent/GB589276A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/02—Input circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/04—Arrangements for displaying electric variables or waveforms for producing permanent records
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/048—Checking overvoltage diverters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Recording Measured Values (AREA)

Abstract

589,276. Thermal ammeters and voltmeters. LANDIS & GYR SOC. ANON. March 21, 1945, No. 7154. Convention date, April 5, 1944. Addition to 566,645. [Class 37] A meter for counting and measuring shortcurrent impulses as described in the parent Specification includes a vessel the interior of which is closed by a flat diaphragm and is connected with the exterior through a channel offering great resistance to the flow of fluid therethrough. A cylindrical vessel 1, Fig. 1, is closed at the bottom by an insulating disc 2 through which pass terminals 3, 4 connected to a heating wire 7. This is stretched on two small insulating frames 8, of which only one is shown. The vessel 1 is provided with a flange 10 to which are attached by screws 13 clamping rings 11, 12 having between them a diaphragm 14 of thin oiled silk. This carries a pressure transmission plate 15 with an upwardly bent outer edge, which is attached to the diaphragm 14 by means of a plate 16 and discs 17, 18. Attached to the plate 16 by screws 19 is a plate 20 carrying a plunger 21. The lower face of the plate 20 is formed with a channel 22 connected with the interior and exterior of the vessel 1 through holes 23, 24. Between the plates 16, 20 is a packing disc 25 of thin oiled cloth. The plunger 21 is carried in a guide 26 which is held in a cover-plate 28. The channel 22 may, as shown in Fig. 2, consist of concentric circles which are interrupted by a sector and are connected by radial channels so as to produce a continuous channel. Alternatively the channel may be spiral or helical. The wire 7 is heated by the impulse to be measured, thereby heating the air inside the vessel 1 and causing it to expand so that the diaphragm 14 moves the plunger 21 upwards. This movement is transmitted to a metering mechanism as described in the parent Specification. Any undesired stressing of the diaphragm due to variations of temperature or pressure of the surrounding air, which take place comparatively slowly, are compensated by the channel 22 which permits a slow equalisation of the internal and external pressure. The channel 22 may alternatively be sitauted in the wall of the vessel 1 or on the lower disc 2.
GB7154/45A 1942-11-07 1945-03-21 Improved apparatus for the counting and measurement of current impulses of short duration Expired GB589276A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH229050T 1942-11-07

Publications (1)

Publication Number Publication Date
GB589276A true GB589276A (en) 1947-06-16

Family

ID=32180081

Family Applications (2)

Application Number Title Priority Date Filing Date
GB17042/43A Expired GB566645A (en) 1942-11-07 1943-10-16 An improved counting device for over voltages
GB7154/45A Expired GB589276A (en) 1942-11-07 1945-03-21 Improved apparatus for the counting and measurement of current impulses of short duration

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB17042/43A Expired GB566645A (en) 1942-11-07 1943-10-16 An improved counting device for over voltages

Country Status (7)

Country Link
US (2) US2405121A (en)
BE (1) BE460789A (en)
CH (2) CH229050A (en)
DE (1) DE861895C (en)
FR (2) FR898240A (en)
GB (2) GB566645A (en)
NL (1) NL62344C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452175A1 (en) * 1979-03-23 1980-10-17 Alsthom Unelec Sa ELECTRICAL AIR CUT-OFF APPARATUS PROVIDED WITH A SHORT-CIRCUIT INDICATOR DEVICE

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528744A (en) * 1944-11-30 1950-11-07 Landis & Gyr Ag Electromagnetic appliance
US2630860A (en) * 1946-08-31 1953-03-10 Affiliated Gas Equipment Inc Burner control means
US2515677A (en) * 1947-05-23 1950-07-18 Rca Corp Direct current limiter and counter circuit
US2557848A (en) * 1948-05-28 1951-06-19 Rca Corp Arc-back counter
US2625822A (en) * 1949-06-15 1953-01-20 Taylor Instr Compagnies Digital indicating arrangement for measuring systems
US2550460A (en) * 1950-04-06 1951-04-24 George M Farly Monitoring circuit
DE863697C (en) * 1951-02-22 1953-01-19 Brown Ag Device for counting returns in mutators
US2888198A (en) * 1954-03-24 1959-05-26 Westinghouse Electric Corp Automatic circuit reclosers
DE1041124B (en) * 1957-02-11 1958-10-16 W Helmut Schmidt Display device for lightning strikes in house lightning protection systems
US3020727A (en) * 1959-11-02 1962-02-13 Dole Valve Co Heat motor for a rotary ice tray
US3248871A (en) * 1960-09-30 1966-05-03 Jr John E Lindberg Method and apparatus for power transmission and actuation
US3538440A (en) * 1968-08-30 1970-11-03 Westinghouse Electric Corp Voltage detector for shielded conductor providing substantially constant output voltage over wide range of input voltage
US3766536A (en) * 1971-12-15 1973-10-16 Gen Motors Corp Catalytic converter monitor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US884047A (en) * 1908-01-13 1908-04-07 John E Shepherd Automatic alarm system.
US1056459A (en) * 1908-01-20 1913-03-18 Automatic Fire Prot Company Automatic fire-protection signal system.
US989347A (en) * 1910-05-02 1911-04-11 Internat Electric Prot Company Electrical thermostat.
US1695534A (en) * 1925-02-27 1928-12-18 William C Carter Pump diaphragm
US1899746A (en) * 1929-04-03 1933-02-28 Westinghouse Electric & Mfg Co Protective system for transformers
US2024060A (en) * 1933-05-23 1935-12-10 Roberto J Peralta Electric current control device
US2021079A (en) * 1934-04-23 1935-11-12 Crosley Radio Corp Restricted flow device
US2227668A (en) * 1938-08-11 1941-01-07 Jules F Bonal Governor
US2271307A (en) * 1938-10-21 1942-01-27 William A Ray Thermal operator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452175A1 (en) * 1979-03-23 1980-10-17 Alsthom Unelec Sa ELECTRICAL AIR CUT-OFF APPARATUS PROVIDED WITH A SHORT-CIRCUIT INDICATOR DEVICE

Also Published As

Publication number Publication date
CH238954A (en) 1945-08-31
FR898240A (en) 1945-04-13
US2405121A (en) 1946-08-06
BE460789A (en) 1945-11-30
GB566645A (en) 1945-01-08
NL62344C (en) 1948-08-06
FR53800E (en) 1946-09-06
DE861895C (en) 1953-01-08
CH229050A (en) 1943-09-30
US2493448A (en) 1950-01-03

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