DE202005003264U1 - Melt pressure sensor system for plastics melt processing has separate detachable amplifier with level adjustment potentiometer - Google Patents
Melt pressure sensor system for plastics melt processing has separate detachable amplifier with level adjustment potentiometer Download PDFInfo
- Publication number
- DE202005003264U1 DE202005003264U1 DE200520003264 DE202005003264U DE202005003264U1 DE 202005003264 U1 DE202005003264 U1 DE 202005003264U1 DE 200520003264 DE200520003264 DE 200520003264 DE 202005003264 U DE202005003264 U DE 202005003264U DE 202005003264 U1 DE202005003264 U1 DE 202005003264U1
- Authority
- DE
- Germany
- Prior art keywords
- measuring
- sensor
- amplifier
- pressure sensor
- melt
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76006—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92019—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92361—Extrusion unit
- B29C2948/92409—Die; Nozzle zone
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft ein Messsystem mit einem Sensor zur Aufnahme von Messwerten z.B. in einer Schmelze und Erzeugung eines Messsignals sowie einem an dem Sensor angeschlossenen Messverstärker zur Verstärkung des Messsignals und Erzeugung eines Steuersignals, das einer Prozesssteuerung zugeführt wird.The The invention relates to a measuring system with a sensor for recording of measured values e.g. in a melt and generating a measuring signal as well a measuring amplifier connected to the sensor for amplifying the Measuring signal and generating a control signal, the process control supplied becomes.
In
der Kunststoffverarbeitung, speziell im Extrusionsbereich, sind
Messungen mittels Sensoren, z.B. des Schmelzedrucks mittels eines
Drucksensors in einem Schmelzekanal, zur Steuerung und Regelung
des Verarbeitungsprozesses unerlässlich.
Dazu verwendete Sensoren sind bekannt. Ein bekanntes Messsystem
ist beispielsweise anhand der
Die DMS Brücke liefern ein Ausgangssignal im mV Bereich, das für die weitere Verarbeitung verstärkt und skaliert werden muss.The DMS bridge provide an output signal in the mV range, which is for further processing reinforced and must be scaled.
Hier finden zwei unterschiedliche Systeme Verwendung:Here find two different systems use:
Das
Ausgangssignal des in der Maschine angeordneten Drucksensors
Ein
derartiger Drucksensor
Es
kann aber auch ein Messverstärker
Die
Drucksensoren
Der
Drucksensor
Der Erfindung liegt die Aufgabe zugrunde, ein Messsystem der eingangs genannten Art zu schaffen, dass einerseits eine sichere und störungsfreie Übertragung des Messsignals über lange Leitungslängen gewährleistet und auf der anderen Seite eine kostengünstige Möglichkeit bietet, die hochwertige Messelektronik zu erhalten, wenn der mechanische Teil des Sensors beschädigt ist.Of the Invention is based on the object, a measuring system of the beginning to create the aforementioned type, on the one hand, a safe and trouble-free transmission of the measuring signal over long cable lengths guaranteed and on the other hand offers a cost effective option, the high quality Measuring electronics obtain when the mechanical part of the sensor damaged is.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Messverstärker lösbar am Sensor angeordnet ist. Dadurch wird erreicht, dass im Falle des Austauschs des Sensors der Messverstärker von dem Sensor getrennt werden kann, so dass er weiterhin im System Verwendung findet und nicht mit dem Sensor gemeinsam ersetzt werden muss.The The object is achieved in that the measuring amplifier solvable is arranged on the sensor. This ensures that in the case of Replacing the sensor of the measuring amplifier separated from the sensor can be used so that it continues to be used in the system and not have to be replaced with the sensor together.
Erfindungsgemäß kann der Sensor ein Drucksensor für die Schmelze sein, der in eine Bohrung in der den Schmeizekanal umgebenden Wandung einsetzbar sein kann.According to the invention of Sensor a pressure sensor for be the melt that enters a hole in the melt channel surrounding wall can be used.
Es hat sich als vorteilhaft erwiesen, wenn der Messverstärker mittels einer Steckerverbindung mit dem Sensor verbunden ist, dabei kann der Messverstärker mittels eines Anschlusssteckers direkt elektrisch, und mechanisch die notwendige Verbindungskraft aufbringend, an dem Sensor angeschlossen sein.It has proved to be advantageous if the measuring amplifier is connected by means of a plug connection with the sensor, while the measuring amplifier by means of a connector plug directly elek trically, and mechanically applying the necessary connection force to be connected to the sensor.
In vorteilhafter Weise kann der Messverstärker derart ausgebildet sein, dass er direkt auf einen standardisierten Sensor steckbar ist.In Advantageously, the measuring amplifier can be designed in such a way that it can be plugged directly onto a standardized sensor.
Eine Anpassung an unterschiedliche Bedingungen kann erfolgen, wenn der Messverstärker von außen zugängliche Potentiometer zur Einstellung des Eingangssignalpegels und/oder Messbereichs aufweist.A Adaptation to different conditions can be made when the measuring amplifiers from the outside accessible Potentiometer for adjusting the input signal level and / or Measuring range has.
Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The Invention is described below with reference to an illustrated in the drawing Embodiment explained in more detail.
Es zeigen:It demonstrate:
Die
Mittels
einer Steckverbindung
Durch
die erfindungsgemäße Ausbildung des
steckbar auf einen Standardsensor mit DMS Brücke montierten Messverstärkers
Über zwei von außen zugängliche Potentiometer kann der Verstärker auf den erforderlichen Eingangssignalpegel und Messbereich eingestellt werden. Ausgangsseitig liefert der Verstärker ein dem gemessenem Druck entsprechendes Ausgangssignal.About two from the outside accessible Potentiometer can be the amplifier adjusted to the required input signal level and measuring range become. On the output side, the amplifier supplies the measured pressure corresponding output signal.
Hierdurch sind, bei hoher Störfestigkeit, die Eingangsbereiche aller gängigen Steuerungs- und Prozessleitsysteme abgedeckt.hereby are, with high interference immunity, the entrance areas of all common Control and process control systems covered.
- 11
- Schmelzekanalmelt channel
- 22
- Drucksensorpressure sensor
- 33
- Messmembranmeasuring membrane
- 44
- Kapillarecapillary
- 55
- Membrane mit DMS Brückemembrane with strain gauge bridge
- 66
- Anschlusssteckerconnector
- 77
- MessleitungMeasurement line
- 88th
- Schaltschrank / Anlagensteuerungswitch cabinet / Plant control
- 99
- externer Messverstärkerexternal measuring amplifiers
- 1010
- Steuerungs- oder Prozessleitsystemcontrol or process control system
- 1111
- integrierter Messverstärkerintegrated measuring amplifiers
- 1212
- austauschbarer Messverstärkerreplaceable measuring amplifiers
- 1313
- Steckverbindungconnector
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200520003264 DE202005003264U1 (en) | 2005-02-25 | 2005-02-25 | Melt pressure sensor system for plastics melt processing has separate detachable amplifier with level adjustment potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200520003264 DE202005003264U1 (en) | 2005-02-25 | 2005-02-25 | Melt pressure sensor system for plastics melt processing has separate detachable amplifier with level adjustment potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE202005003264U1 true DE202005003264U1 (en) | 2005-06-23 |
Family
ID=34707049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200520003264 Expired - Lifetime DE202005003264U1 (en) | 2005-02-25 | 2005-02-25 | Melt pressure sensor system for plastics melt processing has separate detachable amplifier with level adjustment potentiometer |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE202005003264U1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7516270U (en) * | 1975-05-22 | 1976-01-22 | Hiss, Eckart, Dr.Rer.Nat., 2300 Kiel | OPTOELECTRONIC COMBINATION PROBE CONSTRUCTED FROM SEVERAL SCREW-ON OR PLUG-IN ASSEMBLIES |
| DE4302885A1 (en) * | 1993-02-02 | 1994-09-08 | Gneuss Kunststofftechnik Gmbh | Pressure pick-up for plastic melts |
| DE19610167C1 (en) * | 1996-03-15 | 1997-02-13 | Elbagu Mes Und Regelungstechni | Measuring device for determining state variables of a liquid medium |
| DE19808878A1 (en) * | 1998-03-03 | 1999-09-16 | Ifm Electronic Gmbh | Temperature measuring device for process metrology |
| DE10113646A1 (en) * | 2001-03-20 | 2002-09-26 | Abb Research Ltd | Remote use fluid testing device has sensors linked to palm computer via modular interface and power supply |
| DE10113676A1 (en) * | 2001-03-21 | 2002-09-26 | Abb Research Ltd | System has plug connectors enabling optional connections between sensor or actuator and configuration/diagnosis/maintenance unit or communications module and between module and unit |
| DE10113628A1 (en) * | 2001-03-20 | 2002-10-17 | Abb Research Ltd | Device for investigating liquids in clarifying plants comprises sensor electrically and mechanically connected via interface module to mobile transmitting equipment |
-
2005
- 2005-02-25 DE DE200520003264 patent/DE202005003264U1/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7516270U (en) * | 1975-05-22 | 1976-01-22 | Hiss, Eckart, Dr.Rer.Nat., 2300 Kiel | OPTOELECTRONIC COMBINATION PROBE CONSTRUCTED FROM SEVERAL SCREW-ON OR PLUG-IN ASSEMBLIES |
| DE4302885A1 (en) * | 1993-02-02 | 1994-09-08 | Gneuss Kunststofftechnik Gmbh | Pressure pick-up for plastic melts |
| DE19610167C1 (en) * | 1996-03-15 | 1997-02-13 | Elbagu Mes Und Regelungstechni | Measuring device for determining state variables of a liquid medium |
| DE19808878A1 (en) * | 1998-03-03 | 1999-09-16 | Ifm Electronic Gmbh | Temperature measuring device for process metrology |
| DE10113646A1 (en) * | 2001-03-20 | 2002-09-26 | Abb Research Ltd | Remote use fluid testing device has sensors linked to palm computer via modular interface and power supply |
| DE10113628A1 (en) * | 2001-03-20 | 2002-10-17 | Abb Research Ltd | Device for investigating liquids in clarifying plants comprises sensor electrically and mechanically connected via interface module to mobile transmitting equipment |
| DE10113676A1 (en) * | 2001-03-21 | 2002-09-26 | Abb Research Ltd | System has plug connectors enabling optional connections between sensor or actuator and configuration/diagnosis/maintenance unit or communications module and between module and unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R163 | Identified publications notified | ||
| R207 | Utility model specification |
Effective date: 20050728 |
|
| R156 | Lapse of ip right after 3 years |
Effective date: 20080902 |