GB804541A - Improvements in detectors of oil mists and the like - Google Patents

Improvements in detectors of oil mists and the like

Info

Publication number
GB804541A
GB804541A GB3203754A GB3203754A GB804541A GB 804541 A GB804541 A GB 804541A GB 3203754 A GB3203754 A GB 3203754A GB 3203754 A GB3203754 A GB 3203754A GB 804541 A GB804541 A GB 804541A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
electric
oil
photo
cell
arrangement
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
GB3203754A
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

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47Scattering, i.e. diffuse reflection
    • G01N21/49Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity

Abstract

804,541. Light-sensitive mist detectors. GRAVINER MANUFACTURING CO. Ltd. Oct. 31, 1955 [Nov. 5, 1954], No. 32037/54. Class 40 (3). An arrangement for detecting excessive concentrations of oil mists in engine crank-cases (e.g. due to overheated bearings &c.) comprises a hollow louvred probe 10 adapted to be inserted into the crank-case and inside which is positioned a photo-electric cell 14 secured to and spaced a predetermined distance from (by means of hollow rods 20) a unitary structure including an electric lamp 13 the structure being arranged to be clamped between a flange 11, attached to the probe and secured to the outside of the crankcase, and a housing 12 the hinged portion 12a of which is secured, in the closed position by means of wing nuts 18. To prevent oil mist from entering the lamp housing 12 and the photo-electric cell housing 17 both housings are sealed by means of translucent windows 15 and 17b respectively. In an alternative construction the positions of the photo-electric cell and light source may be interchanged (Fig. 4, not shown) and in each arrangement supply leads to the element which is positioned inside the probe are brought out through one of the hollow rods 20 to a plug 31 to which the supply leads to the lamp are also connected and which connects with an external control and warning circuit arrangement via a plug and socket 31, 32. The latter circuit arrangement (Fig. 3, not shown) includes an indicating meter and a moving-coil relay, connected in series, and operated directly by the signal generated by the photo-electric cell. The meter is calibrated in terms of the obscuration of the photo-electric cell which is produced by the oil mist present in the probe (and therefore in the crank-case) and the relay is connected in a warning and indicating circuit arrangement which gives a visible indication of normal operation, with the concentration of oil mist at a safe level, and both a visible indication and audible warning when the oil mist concentration exceeds a predetermined level.
GB3203754A 1954-11-05 1954-11-05 Improvements in detectors of oil mists and the like Expired GB804541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3203754A GB804541A (en) 1954-11-05 1954-11-05 Improvements in detectors of oil mists and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3203754A GB804541A (en) 1954-11-05 1954-11-05 Improvements in detectors of oil mists and the like

Publications (1)

Publication Number Publication Date
GB804541A true true GB804541A (en) 1958-11-19

Family

ID=10332135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3203754A Expired GB804541A (en) 1954-11-05 1954-11-05 Improvements in detectors of oil mists and the like

Country Status (1)

Country Link
GB (1) GB804541A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6137582A (en) * 1996-09-13 2000-10-24 Electrical Engineering Company Ltd. Device for determining measured values, especially the concentration of an aerosol in a closed space of a working machine
GB2408798A (en) * 2003-12-03 2005-06-08 Horiba Ltd Light-scattering oil mist detecting device with means for preventing oil droplets entering the casing
EP1936358A1 (en) * 2006-12-21 2008-06-25 Horiba, Ltd. Oil mist detector
CN102297023A (en) * 2011-07-14 2011-12-28 北京伟林科信科技有限公司 An open cavity structure splashes preventing intrusion sensor mist

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6137582A (en) * 1996-09-13 2000-10-24 Electrical Engineering Company Ltd. Device for determining measured values, especially the concentration of an aerosol in a closed space of a working machine
GB2408798A (en) * 2003-12-03 2005-06-08 Horiba Ltd Light-scattering oil mist detecting device with means for preventing oil droplets entering the casing
GB2408798B (en) * 2003-12-03 2006-11-01 Horiba Ltd Oil mist detecting device
EP1936358A1 (en) * 2006-12-21 2008-06-25 Horiba, Ltd. Oil mist detector
CN102297023A (en) * 2011-07-14 2011-12-28 北京伟林科信科技有限公司 An open cavity structure splashes preventing intrusion sensor mist

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