FR2310972B3 - - Google Patents
Info
- Publication number
- FR2310972B3 FR2310972B3 FR7617518A FR7617518A FR2310972B3 FR 2310972 B3 FR2310972 B3 FR 2310972B3 FR 7617518 A FR7617518 A FR 7617518A FR 7617518 A FR7617518 A FR 7617518A FR 2310972 B3 FR2310972 B3 FR 2310972B3
- Authority
- FR
- France
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/14—Controlling or regulating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752526665 DE2526665A1 (en) | 1975-06-14 | 1975-06-14 | ELECTRIC WATER RESISTANCE SENSOR FOR WATER SOFTENER |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2310972A1 FR2310972A1 (en) | 1976-12-10 |
FR2310972B3 true FR2310972B3 (en) | 1979-03-02 |
Family
ID=5949128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7617518A Granted FR2310972A1 (en) | 1975-06-14 | 1976-06-10 | Water hardness sensor for water softening plant - with tandem pairs of electrodes supplied with high frequency voltage |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE842908A (en) |
DE (1) | DE2526665A1 (en) |
FR (1) | FR2310972A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4847598A (en) * | 1987-11-27 | 1989-07-11 | Aqua-Tronics, Inc. | Water treatment regeneration system incorporating alternating current excitation and paired operational amplifiers with asymmetrical feedback elements |
-
1975
- 1975-06-14 DE DE19752526665 patent/DE2526665A1/en active Pending
-
1976
- 1976-06-10 FR FR7617518A patent/FR2310972A1/en active Granted
- 1976-06-14 BE BE2055117A patent/BE842908A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE842908A (en) | 1976-12-14 |
FR2310972A1 (en) | 1976-12-10 |
DE2526665A1 (en) | 1976-12-16 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |