HUT50969A - Device for controlling ventillation of a mine - Google Patents
Device for controlling ventillation of a mineInfo
- Publication number
- HUT50969A HUT50969A HU881969A HU196988A HUT50969A HU T50969 A HUT50969 A HU T50969A HU 881969 A HU881969 A HU 881969A HU 196988 A HU196988 A HU 196988A HU T50969 A HUT50969 A HU T50969A
- Authority
- HU
- Hungary
- Prior art keywords
- ventillation
- mine
- controlling
- controlling ventillation
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
- G01F1/325—Means for detecting quantities used as proxy variables for swirl
- G01F1/3282—Means for detecting quantities used as proxy variables for swirl for detecting variations in infrasonic, sonic or ultrasonic waves, due to modulation by passing through the swirling fluid
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU881969A HU202646B (en) | 1988-04-18 | 1988-04-18 | Device for checking ventillation of a mine |
EP89890108A EP0339016A1 (de) | 1988-04-18 | 1989-04-14 | Durchflussmessgerät |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU881969A HU202646B (en) | 1988-04-18 | 1988-04-18 | Device for checking ventillation of a mine |
Publications (2)
Publication Number | Publication Date |
---|---|
HUT50969A true HUT50969A (en) | 1990-03-28 |
HU202646B HU202646B (en) | 1991-03-28 |
Family
ID=10957079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HU881969A HU202646B (en) | 1988-04-18 | 1988-04-18 | Device for checking ventillation of a mine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0339016A1 (hu) |
HU (1) | HU202646B (hu) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2933016B2 (ja) * | 1996-04-02 | 1999-08-09 | 横河電機株式会社 | 渦流量計 |
ATE377745T1 (de) * | 1996-06-12 | 2007-11-15 | Racine Federated | Ultraschalldurchflussmesser mit entferntliegender signalverarbeitung |
US5728947A (en) * | 1996-06-12 | 1998-03-17 | Asahi/America, Inc. | Ultrasonic vortex flowmeter having clamp-on housing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142725A (en) * | 1983-06-21 | 1985-01-23 | United Gas Industries Ltd | Fluid flow meter |
GB8403145D0 (en) * | 1984-02-07 | 1984-03-14 | Bestobell Meterflow Ltd | Monitoring fluid flow |
DE3601407A1 (de) * | 1986-01-18 | 1987-07-23 | Bopp & Reuther Gmbh | Durchflussmesser |
US4815324A (en) * | 1986-04-24 | 1989-03-28 | Mitsubishi Denki Kabushiki Kaisha | Intake air meter for an internal combustion engine |
-
1988
- 1988-04-18 HU HU881969A patent/HU202646B/hu not_active IP Right Cessation
-
1989
- 1989-04-14 EP EP89890108A patent/EP0339016A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
HU202646B (en) | 1991-03-28 |
EP0339016A1 (de) | 1989-10-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HMM4 | Cancellation of final prot. due to non-payment of fee |