CH558006A - Einrichtung zur automatischen ueberpruefung von leitfaehigkeitsgrenzschaltern. - Google Patents
Einrichtung zur automatischen ueberpruefung von leitfaehigkeitsgrenzschaltern.Info
- Publication number
- CH558006A CH558006A CH1606073A CH1606073A CH558006A CH 558006 A CH558006 A CH 558006A CH 1606073 A CH1606073 A CH 1606073A CH 1606073 A CH1606073 A CH 1606073A CH 558006 A CH558006 A CH 558006A
- Authority
- CH
- Switzerland
- Prior art keywords
- limit switches
- automatic check
- conductivity limit
- conductivity
- check
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2259848A DE2259848C3 (de) | 1972-12-07 | 1972-12-07 | Anordnung zur automatischen Überprüfung der Funktionsfähigkeit eines Leitfähigkeitsgrenzwertgebers |
Publications (1)
Publication Number | Publication Date |
---|---|
CH558006A true CH558006A (de) | 1975-01-15 |
Family
ID=5863753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1606073A CH558006A (de) | 1972-12-07 | 1973-11-15 | Einrichtung zur automatischen ueberpruefung von leitfaehigkeitsgrenzschaltern. |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH558006A (de) |
DE (1) | DE2259848C3 (de) |
NL (1) | NL7316353A (de) |
-
1972
- 1972-12-07 DE DE2259848A patent/DE2259848C3/de not_active Expired
-
1973
- 1973-11-15 CH CH1606073A patent/CH558006A/de not_active IP Right Cessation
- 1973-11-29 NL NL7316353A patent/NL7316353A/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE2259848B2 (de) | 1974-09-26 |
NL7316353A (de) | 1974-06-11 |
DE2259848A1 (de) | 1974-07-04 |
DE2259848C3 (de) | 1975-05-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |