US20030110855A1 - Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products - Google Patents
Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products Download PDFInfo
- Publication number
- US20030110855A1 US20030110855A1 US10/353,582 US35358203A US2003110855A1 US 20030110855 A1 US20030110855 A1 US 20030110855A1 US 35358203 A US35358203 A US 35358203A US 2003110855 A1 US2003110855 A1 US 2003110855A1
- Authority
- US
- United States
- Prior art keywords
- level
- filling level
- weight
- measuring cylinder
- sensor
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002480 mineral oil Substances 0.000 title claims abstract description 9
- 235000010446 mineral oil Nutrition 0.000 title claims abstract description 9
- 230000004888 barrier function Effects 0.000 claims description 12
- 238000005496 tempering Methods 0.000 claims description 4
- 238000004821 distillation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000000717 retained effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
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
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
-
- 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
- G01F23/20—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 measurement of weight, e.g. to determine the level of stored liquefied gas
Definitions
- the invention concerns a method and a device for determining the filling level and can be applied, in particular, for the ascertainment of the simmering process of mineral oil products.
- a disadvantage with the known solutions is the fact that the applied mechanical system is sophisticated, particularly because of the moving parts in the manufacture and maintenance, and is susceptible to disturbances during operation.
- the invention is based on the task assignment of creating a method and a device which make possible the realization of an inexpensively manufacturable and reliably functioning measuring arrangement without the use of moving parts.
- a significant advantage of the invention lies in the fact that no moving parts are required for determining the filling level. This is realized in such a way that by means of at least two stationary sensors, a first filling level (level 1) and at least a second filling level (level 2) are defined and the number of drops required for reaching level 1 and level 2 is recorded, by way of a further sensor the number of drops dropped in during the simmering process is counted and, by way of calculation, the additional partial volume and the filling level is determined, or by means of the stationary sensors the first filling level (level 1) and at least the second filling level (level 2) are defined and the weight required for reaching level 1 and level 2 is recorded, the additional weight in the simmering process is measured and, again by means of calculation, the additional partial volume and the filling gauge level is determined.
- a device which is inexpensive to manufacture, easy to operate and convenient to maintain is realized in such a way that, for the purpose of level recording in a measuring cylinder in a measuring arrangement a first stationary measuring sensor and at least a second stationary measuring sensor as well as a metering sensor is arranged, where the positions of the measuring sensors represent a defined relation to the filling gauge level in the measuring cylinder and the metering sensor records the number of drops dropped in during the simmering process.
- FIG. 1A measuring arrangement for the recording of the filling level by means of light barriers
- At least two light barriers L 1 , L 2 are arranged which are calibrated once (volume filling level), so that their position represents a fixed and known relation to the respective filling degree of the measuring cylinder 4 . Should liquid level 6 , in each case, between both light barrier positions be ascertained, then this must be done by interpolation with the inclusion of a further reference variable.
- the number of the passing drops 5 is adopted which is ascertained by way of a further light barrier L T .
- the drops 5 are counted and the partial volume at the location x between two calibrated marks L 1 -L 2 is proportionately ascertained.
- sensors acting similar to the light barriers can be applied, such as switches, pressure switches, proximity elements (e.g., with the help of metal floating bodies) or self-heated temperature sensors.
- a scale is placed under the measuring cylinder or weight sensors are suitably arranged.
- a tempering chamber in the form of a block and extensively adapted to the measuring cylinder 4 is arranged.
- the block, and with it the measuring cylinder 4 is directly or indirectly tempered e.g., by way of liquid.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention describes a method and a device for determining the filling level and can be applied, in particular, for the ascertainment of the simmering process of mineral oil products.
The basis of the method is that by means of at least two stationary sensors a first filling level (Level 1) and at least a second filling level (Level 2) are defined and the number of drops required for reaching Level 1 and Level 2 is recorded, by way of a further sensor the number of drops dropped in during the simmering process is counted and, by way of calculation, the partial volume at the location x and the filling level are determined.
The device is characterized, wherein for the purpose of level recording in a measuring cylinder (4) in a measuring arrangement a first stationary sensor (L1) and at least a second stationary sensor (L2) as well as a metering sensor (LT) are arranged, where the positions of the sensors (L1,L2) represent a defined relation to the filling level in the measuring cylinder (4) and the metering sensor (LT) records the number of drops (5) dropped in during the simmering process.
Description
- The invention concerns a method and a device for determining the filling level and can be applied, in particular, for the ascertainment of the simmering process of mineral oil products.
- When determining the simmering process of mineral oil products, a certain sample amount is heated in a distillation flask under pre-specified conditions and condensed again via a cooling tube. The condensed volume is retained in a measuring cylinder and the dependency of the volume increase to the temperature prevailing in the distillation flask in each case is ascertained.
- The presentation of the temperature to the retained liquid volume provides conclusions with regard to the composition and usability of the distilled material and is internationally standardized. In particular, it is used in refineries for the purpose of inspecting fuels.
- This distillation test process was originally performed manually; at the present time, appropriate automatic devices are predominantly used in order to save time. Normally, in such cases, the surface of the liquid to be retained in the measuring cylinder is ascertained in its level by way of a following light barrier, and is thus indicated as a volume. This involves a solution where the light barrier, motor-driven, follows in a controlled manner the continually rising liquid level.
- A disadvantage with the known solutions is the fact that the applied mechanical system is sophisticated, particularly because of the moving parts in the manufacture and maintenance, and is susceptible to disturbances during operation.
- For this reason, the invention is based on the task assignment of creating a method and a device which make possible the realization of an inexpensively manufacturable and reliably functioning measuring arrangement without the use of moving parts.
- This task assignment is solved by the features in the
claims - A significant advantage of the invention lies in the fact that no moving parts are required for determining the filling level. This is realized in such a way that by means of at least two stationary sensors, a first filling level (level 1) and at least a second filling level (level 2) are defined and the number of drops required for reaching
level 1 andlevel 2 is recorded, by way of a further sensor the number of drops dropped in during the simmering process is counted and, by way of calculation, the additional partial volume and the filling level is determined, or by means of the stationary sensors the first filling level (level 1) and at least the second filling level (level 2) are defined and the weight required for reachinglevel 1 andlevel 2 is recorded, the additional weight in the simmering process is measured and, again by means of calculation, the additional partial volume and the filling gauge level is determined. - A device which is inexpensive to manufacture, easy to operate and convenient to maintain is realized in such a way that, for the purpose of level recording in a measuring cylinder in a measuring arrangement a first stationary measuring sensor and at least a second stationary measuring sensor as well as a metering sensor is arranged, where the positions of the measuring sensors represent a defined relation to the filling gauge level in the measuring cylinder and the metering sensor records the number of drops dropped in during the simmering process.
- In like manner it is also possible to record the additional weight instead of drop counting where, for level recording in the measuring cylinder in the measuring arrangement, again a first stationary sensor and at least a second stationary sensor is arranged, and the positions of the sensors represent a defined relation to the filling level in the measuring cylinder and the measuring cylinder is connected with means for recording the weight.
- The features of the invention will be better understood, at least in part, from the following descriptions of most preferred embodiments.
- The illustrations show:
- FIG. 1A measuring arrangement for the recording of the filling level by means of light barriers
- FIG. 2A principle illustration of the measuring arrangement in accordance with the state of the art
- As shown in FIG. 2, for the determination of the simmering process of mineral oil products, a certain sample amount is heated up in a
distillation flask 1 under pre-specified conditions and again condensed by way of a cooling tube 3. The condensed amount is retained in ameasuring cylinder 4 and the dependency of the volume increase to thetemperature 2 prevailing in the distillation flask. - According to the embodiment of the invention as illustrated in FIG. 1, at least two light barriers L1, L2 are arranged which are calibrated once (volume filling level), so that their position represents a fixed and known relation to the respective filling degree of the
measuring cylinder 4. Shouldliquid level 6, in each case, between both light barrier positions be ascertained, then this must be done by interpolation with the inclusion of a further reference variable. - For this purpose, and according to this embodiment of the invention, the number of the
passing drops 5 is adopted which is ascertained by way of a further light barrier LT . For the allocation to the dropped-involume 6, thedrops 5 are counted and the partial volume at the location x between two calibrated marks L1-L2 is proportionately ascertained. -
-
- For the calibrational rough recording of the filling levels, which corresponds to the positions of L1 and L2, sensors acting similar to the light barriers can be applied, such as switches, pressure switches, proximity elements (e.g., with the help of metal floating bodies) or self-heated temperature sensors.
- In a second embodiment variant of the invention, instead of the use of a light barrier LT, a scale is placed under the measuring cylinder or weight sensors are suitably arranged. In this way, the measured masses when passing
weight 1 andweight 2 can be converted onto the corresponding volume in the same manner as in the case of the light barrier embodiment example. Then, this results in the following formula: - If the volume/weight is not constant over the entire amount, therefore more calibration points (L3, L4 . . . ) are envisaged for linearization (Weight3, Weight4).
- As the measuring cylinder according to applicable standards is differently tempered, a fact to be noted when applying light barriers is that the glass surface of the
measuring flask 4 does not go blind as a result of condensate formation and that the tempering of the same takes place as quickly as possible. Normally, this is done in a tempering chamber. - According to a purposeful embodiment form of the invention, a tempering chamber in the form of a block and extensively adapted to the measuring
cylinder 4 is arranged. As a result of the very small air space around the measuring cylinder, condensate formation is avoided and it is possible to change temperatures quickly. The block, and with it the measuringcylinder 4, is directly or indirectly tempered e.g., by way of liquid. - The invention is not restricted to the embodiment variants as described here. Moreover, it is possible to create further forms of realization by means of variation of the process steps and features already mentioned here, without going beyond the framework of the invention itself.
Claims (11)
1. Method for determining the filling level for the ascertainment of the simmering process of mineral oil products,
wherein,
by means of at least two stationary sensors a first filling level (Level 1) and at least a second filling level (Level 2) are defined and the number of drops required for reaching Level 1 and Level 2 is recorded, by way of a further sensor the number of drops dropped in during the simmering process is counted and, by way of calculation, the partial volume at the location x and the filling level is determined.
3. Method for determining the filling level for the ascertainment of the simmering process of mineral oil products,
wherein
by means of at least two stationary sensors a first filling level (Level 1) and at least a second filling level (Level 2) are defined and the weight required for reaching Level 1 and Level 2 is recorded, the additional weight in the simmering process is measured and, by means of calculation, the partial volume at the location x and the filling level is determined.
5. Method according to claim 1 or claim 4 ,
wherein
the filling level determination is effected in a tempered manner.
6. Device for determining the filling level for the ascertainment of the simmering process of mineral oil products,
wherein
for the purpose of level recording in a measuring cylinder (4) in a measuring arrangement a first stationary sensor (L1) and at least a second stationary sensor (L2) as well as a metering sensor (LT) is arranged, where the positions of the sensors (L1,L2) represent a defined relation to the filling level in the measuring cylinder (4) and the metering sensor (LT) records the number of the drops (5) dropped in during the simmering process.
7. Device for determining the filling level for the ascertainment of the simmering process of mineral oil products,
wherein
for level recording in a measuring cylinder (4) in a measuring arrangement a first stationary sensor (L1) and at least a second stationary sensor (L2) is arranged, where the positions of the sensors (L1,L2) represent a defined relation to the filling level in the measuring cylinder (4) and the measuring cylinder (4) is connected with means for recording the weight.
8. Device according to claim 6 or claim 7 ,
wherein
the sensors (L1,L2) are light barriers and/or switches and/or proximity elements.
9. Device according to claim 6 ,
wherein
the metering sensor (LT) is a light barrier.
10. Device according to claim 7 ,
wherein
the means for recording the weight are scales or weight sensors.
11. Device according to claim 7 , or claim 8 ,
wherein
at the measuring cylinder (4) a tempering chamber in the form of a block is arranged which is extensively adapted to the contour of the measuring cylinder (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/353,582 US20030110855A1 (en) | 2000-03-23 | 2003-01-29 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10026394 | 2000-03-23 | ||
DE10026394.1 | 2000-03-23 | ||
US09/815,506 US6571644B2 (en) | 2000-03-23 | 2001-03-23 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
US10/353,582 US20030110855A1 (en) | 2000-03-23 | 2003-01-29 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/815,506 Division US6571644B2 (en) | 2000-03-23 | 2001-03-23 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030110855A1 true US20030110855A1 (en) | 2003-06-19 |
Family
ID=7643840
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/815,506 Expired - Fee Related US6571644B2 (en) | 2000-03-23 | 2001-03-23 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
US10/353,582 Abandoned US20030110855A1 (en) | 2000-03-23 | 2003-01-29 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/815,506 Expired - Fee Related US6571644B2 (en) | 2000-03-23 | 2001-03-23 | Method and device for determining the filling level for the ascertainment of the simmering process of mineral oil products |
Country Status (4)
Country | Link |
---|---|
US (2) | US6571644B2 (en) |
EP (1) | EP1136795B1 (en) |
AT (1) | ATE328267T1 (en) |
DE (1) | DE50109915D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2519289B1 (en) * | 2009-12-30 | 2015-08-19 | Fredrik Svensson | Infusion control device |
US8277118B2 (en) * | 2010-07-16 | 2012-10-02 | Petroleum Analyzer Company, Lp | Drop counter and flow meter for apparatus and method for determining the thermal stability of fluids |
DE102015116392A1 (en) * | 2015-09-28 | 2017-03-30 | Endress+Hauser Conducta Gmbh+Co. Kg | Device for dosing a liquid |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3212318A (en) * | 1962-04-30 | 1965-10-19 | United Aircraft Corp | Calibration device |
US4361032A (en) * | 1979-09-17 | 1982-11-30 | Agfa-Gevaert Aktiengesellschaft | Apparatus for measuring surface tension |
US4487278A (en) * | 1983-08-24 | 1984-12-11 | Trebor Industries, Inc. | Instrument for providing automatic measurement of test weight |
US4680977A (en) * | 1985-03-06 | 1987-07-21 | Ivac Corporation | Optical flow sensor |
US4703314A (en) * | 1986-02-27 | 1987-10-27 | Fisher Scientific Group, Inc. | Empty container detector with drop sensor |
US4936828A (en) * | 1987-06-02 | 1990-06-26 | Kophu Chiang | Liquid drop image sensor |
US5186057A (en) * | 1991-10-21 | 1993-02-16 | Everhart Howard R | Multi-beam liquid-drop size/rate detector apparatus |
US5588963A (en) * | 1991-10-30 | 1996-12-31 | Roelofs; Bernardus J. G. M. | Method for liquid flow measuring and apparatus to practice this method |
US20020139436A1 (en) * | 2000-11-03 | 2002-10-03 | Rosen Robert A. | Liquid filling system with improved fluid displacement, nozzle and container handling, cleaning, and calibration/set-up capabilities |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE568988A (en) * | 1957-05-23 | |||
US3563090A (en) * | 1968-09-18 | 1971-02-16 | Basil V Deltour | Drop monitor |
US3593579A (en) * | 1969-07-16 | 1971-07-20 | Mennen Greatbatch Electronics | Liquid drop sensing and counting system |
US4432761A (en) * | 1981-06-22 | 1984-02-21 | Abbott Laboratories | Volumetric drop detector |
DE3344632A1 (en) * | 1983-12-09 | 1985-06-20 | Siemens AG, 1000 Berlin und 8000 München | DEVICE FOR REGISTERING THE DROPS IN AN INFUSION DEVICE |
DE3702609C1 (en) * | 1987-01-29 | 1988-06-16 | Braun Melsungen Ag | Pressure infusion apparatus |
IT1255495B (en) * | 1992-09-18 | 1995-11-09 | Francesco Bellifemine | DEVICE FOR THE SURVEILLANCE OF A PHLEBOCLYSIS PLANT |
US5938643A (en) * | 1997-07-10 | 1999-08-17 | Unisor Multisystems Ltd | Drop monitoring unit for infusion sets |
-
2001
- 2001-03-23 DE DE50109915T patent/DE50109915D1/en not_active Expired - Lifetime
- 2001-03-23 AT AT01250105T patent/ATE328267T1/en active
- 2001-03-23 EP EP01250105A patent/EP1136795B1/en not_active Expired - Lifetime
- 2001-03-23 US US09/815,506 patent/US6571644B2/en not_active Expired - Fee Related
-
2003
- 2003-01-29 US US10/353,582 patent/US20030110855A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3212318A (en) * | 1962-04-30 | 1965-10-19 | United Aircraft Corp | Calibration device |
US4361032A (en) * | 1979-09-17 | 1982-11-30 | Agfa-Gevaert Aktiengesellschaft | Apparatus for measuring surface tension |
US4487278A (en) * | 1983-08-24 | 1984-12-11 | Trebor Industries, Inc. | Instrument for providing automatic measurement of test weight |
US4680977A (en) * | 1985-03-06 | 1987-07-21 | Ivac Corporation | Optical flow sensor |
US4703314A (en) * | 1986-02-27 | 1987-10-27 | Fisher Scientific Group, Inc. | Empty container detector with drop sensor |
US4936828A (en) * | 1987-06-02 | 1990-06-26 | Kophu Chiang | Liquid drop image sensor |
US5186057A (en) * | 1991-10-21 | 1993-02-16 | Everhart Howard R | Multi-beam liquid-drop size/rate detector apparatus |
US5588963A (en) * | 1991-10-30 | 1996-12-31 | Roelofs; Bernardus J. G. M. | Method for liquid flow measuring and apparatus to practice this method |
US20020139436A1 (en) * | 2000-11-03 | 2002-10-03 | Rosen Robert A. | Liquid filling system with improved fluid displacement, nozzle and container handling, cleaning, and calibration/set-up capabilities |
Also Published As
Publication number | Publication date |
---|---|
ATE328267T1 (en) | 2006-06-15 |
EP1136795A2 (en) | 2001-09-26 |
US6571644B2 (en) | 2003-06-03 |
EP1136795A3 (en) | 2002-06-05 |
US20010025527A1 (en) | 2001-10-04 |
DE50109915D1 (en) | 2006-07-06 |
EP1136795B1 (en) | 2006-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PETROTEST INSTRUMENTS - GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HANDSCHUCK, BERNHARD;REEL/FRAME:013719/0395 Effective date: 20010313 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |