GB1287539A - Improvements in monitoring apparatus - Google Patents

Improvements in monitoring apparatus

Info

Publication number
GB1287539A
GB1287539A GB21274/71A GB2127471A GB1287539A GB 1287539 A GB1287539 A GB 1287539A GB 21274/71 A GB21274/71 A GB 21274/71A GB 2127471 A GB2127471 A GB 2127471A GB 1287539 A GB1287539 A GB 1287539A
Authority
GB
United Kingdom
Prior art keywords
dust
receiver
diaphragms
source
fuel
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
GB21274/71A
Inventor
Alfred Stonner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1287539A publication Critical patent/GB1287539A/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
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/12—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a flowing fluid or a flowing granular solid

Abstract

1287539 Automatic concentration control A STONNER 19 April 1971 [28 Jan 1970] 21274/71 Heading G3R [Also in Division G1] In an apparatus for continuously monitoring the fuel-dust content in a gas stream using a receiver 11 to receive radiation which has passed through the stream from a radioactive source 10, two diaphragms 6 and 7 are provided to protect the source and receiver from fuel-dust in the duct 1 and compressed gas nozzles 8, 9 are arranged in the pipes 4a, 5a to prevent fuel-dust precipitation between the diaphragms. The output from the receiver 11, e.g. on ionisation chamber may either give a measure of coal dust concentration or may after comparison with a desired value, be fed to a regulating circuit in which the quantity of coal-dust or air is adjusted to compensate for deviations from the desired value. If either diaphragm should rupture an alarm signal is given by fail-safe devices 12/13, 18/19, each comprising a light source 12 and photodiode or photo-transistor 13, which monitor the dust level beyond the diaphragms. In addition, a relay-operated shutter (17) is inserted to protect the source 10 and/or receiver 71. Alternatively ultrasonic fail-safe devices may be employed.
GB21274/71A 1970-01-28 1971-04-19 Improvements in monitoring apparatus Expired GB1287539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702003597 DE2003597A1 (en) 1970-01-28 1970-01-28 Device for measuring the density of dust in a gas flow

Publications (1)

Publication Number Publication Date
GB1287539A true GB1287539A (en) 1972-08-31

Family

ID=5760621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21274/71A Expired GB1287539A (en) 1970-01-28 1971-04-19 Improvements in monitoring apparatus

Country Status (3)

Country Link
US (1) US3771472A (en)
DE (1) DE2003597A1 (en)
GB (1) GB1287539A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5828458A (en) * 1995-01-26 1998-10-27 Nartron Corporation Turbidity sensor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1468966A (en) * 1923-09-25 Terson
US2912943A (en) * 1954-12-29 1959-11-17 Vastine Engineering Co Inc Machine for handling gas-borne particulate material
US3291981A (en) * 1963-06-26 1966-12-13 Arthur J Stock Calibrating means for radioactive test apparatus which tests fluent material moving through a conduit
US3353021A (en) * 1964-09-29 1967-11-14 Robert F Stewart Apparatus and process for continuous measurement of moisture in moving coal by neutron thermalization
US3412699A (en) * 1966-03-22 1968-11-26 Babcock & Wilcox Co Fuel feeding apparatus

Also Published As

Publication number Publication date
DE2003597A1 (en) 1971-08-19
US3771472A (en) 1973-11-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee