GB825451A - Improvements in detectors of oil mists and other light obscuring fluids - Google Patents

Improvements in detectors of oil mists and other light obscuring fluids

Info

Publication number
GB825451A
GB825451A GB3624255A GB3624255A GB825451A GB 825451 A GB825451 A GB 825451A GB 3624255 A GB3624255 A GB 3624255A GB 3624255 A GB3624255 A GB 3624255A GB 825451 A GB825451 A GB 825451A
Authority
GB
United Kingdom
Prior art keywords
contact
mist
cell
photo
light
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
GB3624255A
Inventor
Anders Mathisen
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.)
Graviner Manufacturing Co Ltd
Original Assignee
Graviner Manufacturing Co Ltd
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 Graviner Manufacturing Co Ltd filed Critical Graviner Manufacturing Co Ltd
Priority to GB3624255A priority Critical patent/GB825451A/en
Priority to DEG21116A priority patent/DE1078788B/en
Publication of GB825451A publication Critical patent/GB825451A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

825,451. Photo-electric detection of oil mists. GRAVINER MANUFACTURING CO. Ltd. Dec. 14, 1956 [Dec. 17, 1955], No. 36242/55. Class 40 (3). Gas from a diesel engine crankcase is drawn by fan through a detector chamber where the presence of lubricating oil mist varies the light falling on a selenium barrier cell, the detector being capable of isolation from the space to be monitored to allow mist-free gas to be drawn through the detector to check its operation. In the circuit in Fig. 4 power is supplied at plug PL1 to feed the lamp L3 which illuminates the photo-electric cell 12 and the lamp L4 which illuminates a comparison cell 23. The outputs of these cells are fed in opposition to the moving coil relay MC/1 and the microammeter MC2. Sensitivity is adjusted by resistor R2, while resistor R3 zeroes the meter. When mist passes between the light L3 and photo-cell 12 an indication of the current change will be given at MC2. At a predetermined level the current through relay MC/1 will close contact MC1 and energize relay B/3 causing contact B1 to change and light the red warning lamp L2. An audible alarm is sounded by closure of contact B2. The fan is cut off by opening of contact B3. Rectifier RECT1 prevents arcing at contact MC1. To reset, the switch PB1 is pressed to bring " kick-off" coil KO into circuit to open contacts MC1. After isolation, mist-free gas is passed through the chamber to test its operation by means of either a manually operated spring valve (Fig. 2, not shown) or a suction pipe. Applications to the detection of vapour mists in air conditioning, refrigerating and gas cooling systems are referred to.
GB3624255A 1955-12-17 1955-12-17 Improvements in detectors of oil mists and other light obscuring fluids Expired GB825451A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3624255A GB825451A (en) 1955-12-17 1955-12-17 Improvements in detectors of oil mists and other light obscuring fluids
DEG21116A DE1078788B (en) 1955-12-17 1956-12-15 Photoelectric display device for oil fog u. Like. In gases with a two-way valve in the gas supply line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3624255A GB825451A (en) 1955-12-17 1955-12-17 Improvements in detectors of oil mists and other light obscuring fluids

Publications (1)

Publication Number Publication Date
GB825451A true GB825451A (en) 1959-12-16

Family

ID=10386293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3624255A Expired GB825451A (en) 1955-12-17 1955-12-17 Improvements in detectors of oil mists and other light obscuring fluids

Country Status (2)

Country Link
DE (1) DE1078788B (en)
GB (1) GB825451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044268B3 (en) * 2009-10-16 2010-12-02 Christ, Herbert, Dipl.-Ing. System for detection of an oil mist, at potential hot spots, has an optical sensor at the inflow channel into a double membrane suction pump using a permanent magnet and coil for membrane vibration
CN109696445A (en) * 2019-01-28 2019-04-30 河北康正药业有限公司 Plaster detection device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020128686A1 (en) 2020-10-30 2022-05-05 Heinzmann Gmbh & Co. Kg Oil mist detector and method for checking the functionality of an oil mist detector
DE102020128688B4 (en) 2020-10-30 2023-01-26 Heinzmann Gmbh & Co. Kg Oil mist detector with gas pumping device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE661589C (en) * 1930-11-19 1938-06-22 Siemens & Halske Akt Ges Smoke densitometer
US2119326A (en) * 1933-09-06 1938-05-31 Kidde & Co Walter Detection of suspended matter in fluids
DE679547C (en) * 1934-05-10 1939-08-08 Siemens & Halske Akt Ges Device for monitoring gases for their solid constituent content, in particular smoke development from combustion processes
DE679454C (en) * 1937-04-13 1939-08-05 Siemens & Halske Akt Ges Method for determining smoke levels in boiler combustion systems
US2654082A (en) * 1949-09-08 1953-09-29 C O Two Fire Equipment Co Smoke detector
US2660052A (en) * 1950-05-18 1953-11-24 Specialties Dev Corp Apparatus for detecting suspended matter in fluids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044268B3 (en) * 2009-10-16 2010-12-02 Christ, Herbert, Dipl.-Ing. System for detection of an oil mist, at potential hot spots, has an optical sensor at the inflow channel into a double membrane suction pump using a permanent magnet and coil for membrane vibration
CN109696445A (en) * 2019-01-28 2019-04-30 河北康正药业有限公司 Plaster detection device
CN109696445B (en) * 2019-01-28 2024-02-13 河北康正药业有限公司 Plaster detection device

Also Published As

Publication number Publication date
DE1078788B (en) 1960-03-31

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