GB1178818A - Automatic Flash Point Measuring Apparatus - Google Patents

Automatic Flash Point Measuring Apparatus

Info

Publication number
GB1178818A
GB1178818A GB28178/68A GB2817868A GB1178818A GB 1178818 A GB1178818 A GB 1178818A GB 28178/68 A GB28178/68 A GB 28178/68A GB 2817868 A GB2817868 A GB 2817868A GB 1178818 A GB1178818 A GB 1178818A
Authority
GB
United Kingdom
Prior art keywords
liquid
flash point
thermocouple
heating chamber
chamber
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
GB28178/68A
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.)
Precision Scientific Co
Original Assignee
Precision Scientific Co
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 Precision Scientific Co filed Critical Precision Scientific Co
Publication of GB1178818A publication Critical patent/GB1178818A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00Investigating or analyzing materials by the use of thermal means
    • G01N25/50Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
    • G01N25/52Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining flash-point of liquids

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)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

1,178,818. Measuring flash point. PRECISION SCIENTIFIC CO. June 13, 1968 [June 14, 1967], No.28178/68. Headings G1D and G1N. In the automatic determination of the flash point of a liquid in which the liquid is continuously supplied to a heating chamber 14, Fig.1, where it is heated at a controlled rate so as to produce a vapour which rises into a flash chamber 17 together with air from an inlet 20, and in which the airvapour mixture is ignited at the flash point by a spark periodically produced between electrodes 24, 25', detection by a thermocouple TCV of the sudden increase in temperature consequent upon ignition causes the liquid to be diverted by a solenoid-operated valve 12 from the heating chamber 14 into the air inlet 20. This arrangement causes rapid cooling of the flash chamber 17 before the next test cycle commences. The heater 15 of the heating chamber is supplied with a constantly increasing voltage from a motor driven variable transformer (35, Fig.4, not shown), and the liquid passes through the chamber between an inlet 10 and an outlet 23. The temperature of the liquid is detected by a thermocouple TCL and indicated on a recorder 26. When the flash point is reached, the output pulse from thermocouple TCV is supplied to a magnetic amplifier (33) and causes de-energization of the heater. At the same time a reverse D.C. voltage from a converter (43) is applied to the recorder to cause an abrupt drop in the recorded trace, the peak temperature recording being the flash point of the liquid. Other operations consequent on the output pulse from thermocouple TCV are the rotation of valve 12 to divert the liquid from the heating chamber, the disconnection of the electrodes from the pulse generator and reduction of the heater voltage by reversal of the motordriven variable transformer. To prevent an excessive temperature rise in the heating chamber driving a test, a thermocouple TS2 is connected to a shut down circuit.
GB28178/68A 1967-06-14 1968-06-13 Automatic Flash Point Measuring Apparatus Expired GB1178818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64592267A 1967-06-14 1967-06-14

Publications (1)

Publication Number Publication Date
GB1178818A true GB1178818A (en) 1970-01-21

Family

ID=24591001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28178/68A Expired GB1178818A (en) 1967-06-14 1968-06-13 Automatic Flash Point Measuring Apparatus

Country Status (3)

Country Link
US (1) US3521480A (en)
GB (1) GB1178818A (en)
NL (1) NL6807960A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834737A1 (en) * 1996-10-03 1998-04-08 Elf Antar France Apparatus for determining the flash point of a product
WO2012017009A1 (en) * 2010-08-06 2012-02-09 Roland Aschauer Temperature control element for heating and rapidly cooling measurement samples
CN107643313A (en) * 2017-08-17 2018-01-30 浙江海洋大学 It is a kind of can METHOD FOR CONTINUOUS DETERMINATION dropping point tester of lubricating grease
US20220236204A1 (en) * 2019-06-05 2022-07-28 Anton Paar Provetec Gmbh Temperature-control device and method for a flash-point determination test and/or fire-point determination test

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3698236A (en) * 1971-01-29 1972-10-17 Gen Motors Corp Fluid vaporization tester with hot air purge and method
US3913600A (en) * 1974-09-03 1975-10-21 Halliburton Co Method and apparatus for monitoring and controlling the composition of flammable gas mixtures
US4306451A (en) * 1980-04-24 1981-12-22 Honeywell Inc. Gas analyzer
US6715338B1 (en) * 1998-08-28 2004-04-06 Taiwan Semiconductor Manufacturing Co., Ltd Apparatus and method for detecting flammable gas in a gas mixture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634360A (en) * 1950-09-21 1953-04-07 Standard Oil Co Analytical apparatus for determination of sulfur
US2746285A (en) * 1951-03-09 1956-05-22 Standard Oil Co Flash point measurement apparatus
US2939312A (en) * 1956-11-27 1960-06-07 Standard Oil Co Continuous flash point monitor
US3011337A (en) * 1958-08-18 1961-12-05 Socony Mobil Oil Co Inc Apparatus for determining the flash point of petroleum products
US3060299A (en) * 1960-11-25 1962-10-23 Exxon Research Engineering Co Automatic temperature control system
US3368388A (en) * 1965-03-22 1968-02-13 Prec Scient Company Automatic flash point testing device
US3402595A (en) * 1966-05-02 1968-09-24 Standard Oil Co Flash testing apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0834737A1 (en) * 1996-10-03 1998-04-08 Elf Antar France Apparatus for determining the flash point of a product
FR2754348A1 (en) * 1996-10-03 1998-04-10 Elf Antar France APPARATUS FOR DETERMINING THE FLASH POINT OF A PRODUCT
WO2012017009A1 (en) * 2010-08-06 2012-02-09 Roland Aschauer Temperature control element for heating and rapidly cooling measurement samples
CN107643313A (en) * 2017-08-17 2018-01-30 浙江海洋大学 It is a kind of can METHOD FOR CONTINUOUS DETERMINATION dropping point tester of lubricating grease
CN107643313B (en) * 2017-08-17 2020-06-16 浙江海洋大学 Lubricating grease dropping point tester capable of continuously testing
US20220236204A1 (en) * 2019-06-05 2022-07-28 Anton Paar Provetec Gmbh Temperature-control device and method for a flash-point determination test and/or fire-point determination test

Also Published As

Publication number Publication date
NL6807960A (en) 1968-12-16
US3521480A (en) 1970-07-21

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