FR2372421A1 - Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water - Google Patents

Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water

Info

Publication number
FR2372421A1
FR2372421A1 FR7636059A FR7636059A FR2372421A1 FR 2372421 A1 FR2372421 A1 FR 2372421A1 FR 7636059 A FR7636059 A FR 7636059A FR 7636059 A FR7636059 A FR 7636059A FR 2372421 A1 FR2372421 A1 FR 2372421A1
Authority
FR
France
Prior art keywords
emitter
receiver
ring
waste water
clean water
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.)
Granted
Application number
FR7636059A
Other languages
French (fr)
Other versions
FR2372421B3 (en
Inventor
Giovanni Vecchio
Jean-Paul Maloron
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.)
OMNIUM ASSAINISSEMENT
Original Assignee
OMNIUM ASSAINISSEMENT
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 OMNIUM ASSAINISSEMENT filed Critical OMNIUM ASSAINISSEMENT
Priority to FR7636059A priority Critical patent/FR2372421A1/en
Priority to ES464233A priority patent/ES464233A1/en
Priority to IT83524/77A priority patent/IT1097723B/en
Priority to ZA00777007A priority patent/ZA777007B/en
Priority to BE2056469A priority patent/BE861239A/en
Priority to CH1457177A priority patent/CH618009A5/en
Publication of FR2372421A1 publication Critical patent/FR2372421A1/en
Application granted granted Critical
Publication of FR2372421B3 publication Critical patent/FR2372421B3/fr
Granted legal-status Critical Current

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
    • G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The detector head is immersed by suspending it from a service tube which extends clear of the tank. The head is in the form of a ring on a horizontal axis and with an open centre through which liq. can pass. The annular body of the ring houses diametrically opposed emitter and receiver for luminous waves outside the visible spectrum, partic. infra-red waves and esp. those of wavelength between 0.90 and 15 microns. Clean water is continually flushed across the effective faces of the emitter and receiver. The ring is pref. made of a synthesic plastic and passages are formed in the ring body for connection to the emitter and receiver from the service tube, as well as clean water passages to carry water from the service tube. Used for monitoring the sludge level in a waste water sedimentation tank, partic. a secondary sedimentation tank, where the sludge is of low density. Waste water treatment is regulated w.r.t. to sludge level. Algae and vegetable growth is destroyed, by infra-red radiation, so the probe does not become fouled up.
FR7636059A 1976-11-30 1976-11-30 Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water Granted FR2372421A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7636059A FR2372421A1 (en) 1976-11-30 1976-11-30 Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water
ES464233A ES464233A1 (en) 1976-11-30 1977-11-17 Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water
IT83524/77A IT1097723B (en) 1976-11-30 1977-11-22 MUD WATER INTERFACE LEVEL DETECTOR IN RESIDUAL WATER TREATMENT
ZA00777007A ZA777007B (en) 1976-11-30 1977-11-24 Detection device of the water-sludge interface level in the treatment of waste waters
BE2056469A BE861239A (en) 1976-11-30 1977-11-28 WATER-MUD INTERFACE LEVEL DETECTOR IN RESIDUAL WATER TREATMENT
CH1457177A CH618009A5 (en) 1976-11-30 1977-11-29 Probe for detecting the level of the water/sludge interface in the treatment of liquid effluent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7636059A FR2372421A1 (en) 1976-11-30 1976-11-30 Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water

Publications (2)

Publication Number Publication Date
FR2372421A1 true FR2372421A1 (en) 1978-06-23
FR2372421B3 FR2372421B3 (en) 1980-10-17

Family

ID=9180472

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7636059A Granted FR2372421A1 (en) 1976-11-30 1976-11-30 Infrared detector for sludge level in waste water settling tank - has emitter and receiver constantly flushed with clean water

Country Status (6)

Country Link
BE (1) BE861239A (en)
CH (1) CH618009A5 (en)
ES (1) ES464233A1 (en)
FR (1) FR2372421A1 (en)
IT (1) IT1097723B (en)
ZA (1) ZA777007B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110697A1 (en) * 2012-01-25 2013-08-01 Bayer Intellectual Property Gmbh Reflection probe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110697A1 (en) * 2012-01-25 2013-08-01 Bayer Intellectual Property Gmbh Reflection probe
JP2015505057A (en) * 2012-01-25 2015-02-16 バイエル・インテレクチュアル・プロパティ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＢａｙｅｒ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ ＧｍｂＨ Reflective probe
US9285312B2 (en) 2012-01-25 2016-03-15 Bayer Ag Reflection probe

Also Published As

Publication number Publication date
FR2372421B3 (en) 1980-10-17
IT1097723B (en) 1985-08-31
ES464233A1 (en) 1978-07-16
BE861239A (en) 1978-03-16
ZA777007B (en) 1978-09-27
CH618009A5 (en) 1980-06-30

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