CN101887001B - Method for correcting rotary digital display viscometer - Google Patents
Method for correcting rotary digital display viscometer Download PDFInfo
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- CN101887001B CN101887001B CN2009100513088A CN200910051308A CN101887001B CN 101887001 B CN101887001 B CN 101887001B CN 2009100513088 A CN2009100513088 A CN 2009100513088A CN 200910051308 A CN200910051308 A CN 200910051308A CN 101887001 B CN101887001 B CN 101887001B
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- rotating speed
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Abstract
The invention provides a method for correcting a rotary digital display viscometer. In the method, an external data processor with special data processing software is arranged to correct a balance spring to obtain a correct relation curve slope of the torque and rotation speed of the balance spring. The invention only adopts one standard silicone oil and one rotor and has full automation operation. The corrected device can conveniently and accurately measure the viscosity of a measured liquid when in operation. The measurement precision reaches +/-1% and the rotor and the device can realize unified coordination.
Description
Technical field
The present invention relates to a kind of surveying instrument, relate in particular to a kind of bearing calibration of rotary digital display viscometer.
Background technology
Australia stone DV series digit formula viscosity meter is a kind of rotary surveying instrument.Instrument is by driver element, form with computing machine motherboard, the display unit of little processing and mechanical sensor unit that hairspring is housed.It is immersed in the viscosity that fluid to be measured is determined in the required torque of rotor rotation in the fluid to be measured by mensuration.The rotor of measuring liquid viscosity is to be driven by the hairspring that motor is crossed by fine adjustment.Because liquid viscosity causes the hairspring distortion, the photoelectric sensor in the instrument provides detected hairspring deflection the viscosity number of determined liquid by calculating.Measurement range is not only by rotating speed, geometric configuration and the size of rotor and contain the container size and the shape of carrying fluid to be measured and determined, and the torque value of hairspring under given angle is an a crucial factor to the maximum measurement range of instrument.The moment of torsion of hairspring is big more, and measurement range is just big more.This measuring method can be by following formulate
Wherein
V is a viscosity number, the cP of unit;
Rotor used by same coefficient when S is measurement is by the shape and size decision of each rotor;
The hairspring torque value that Q is obtained when being measurement;
M measures selected rotating speed;
C is the elastic modulus of hairspring;
K is a constant;
E is the systematic error of instrument, and it is determined by the friction force of mismachining tolerance, rigging error and the instrument internal of part.
Because there is linear error in hairspring, there is systematic error in instrument, presents a kind of nonlinear sigmoid curve relation between the rotating speed of instrument and the torque value of hairspring, as shown in Figure 1.
Prior art all adopts and selects several measurement points to proofread and correct in standard silicone oil in its range ability to each rotor of instrument when debugging and correction Australia stone DV series digit formula viscosity meter.The topmost problem of the method is that the measuring accuracy of instrument only can guarantee in the measurement point of selected correction that the error at other some places is just very big.This outer rotor and instrument can only singly be joined one to one, and the effective range of instrument is in gamut 20%-80%.The standard silicone oil of the multiple different viscosities value of this kind correction needs and a large amount of time, artificial.
Summary of the invention
Purpose of the present invention exactly in order to address the above problem, provides a kind of bearing calibration of rotary digital display viscometer.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of bearing calibration of rotary digital display viscometer, rotary digital display viscometer comprise driver element, computing machine motherboard, the display unit of band microprocessor and the mechanical pick-up device that hairspring is housed; Be characterized in, an external data processor is set, comprise the data processing software of a special use in this data processor, described bearing calibration may further comprise the steps:
A, the uneasy rotor of viscosity meter rotate with rotating speed 12RPM in air; Set up the 1# rotor then, in air, rotate, regulate zero-bit and eliminate systematic error with rotating speed 60RPM;
B, being correcting fluid with No. 100 standard silicone oil, serves as to proofread and correct rotor with the 1# rotor, tests under rotating speed 3RPM, 6RPM, 18RPM, 30RPM, 45RPM and 60RPM respectively, obtains corresponding hairspring moment of torsion data and outputs to external data processor;
C, external data processor return viscosity meter through the data after will proofreading and correct behind the correction calculation;
The accurate viscosity number of d, used No. 100 standard silicone oil of input calculates the correct hairspring moment of torsion and the relation curve slope of rotating speed by the microprocessor in the instrument.
The described correction calculation of step c comprises the highs and lows in the relation curve that calculates hairspring moment of torsion and rotating speed and it is proofreaied and correct, and simultaneously the non-linear of hairspring is carried out the whole process compensation with software.
The bearing calibration of rotary digital display viscometer of the present invention is adopted hairspring is proofreaied and correct, to obtain the correct hairspring moment of torsion and the relation curve slope of rotating speed.And only use a kind of standard silicone oil and a kind of rotor, the operation full automation.Instrument after the correction can be measured the viscosity of fluid to be measured easily and accurately when work.Use this method make the measuring accuracy of instrument reach ± 1%, rotor and instrument have been realized under unified central planning.
Description of drawings
Fig. 1 is hairspring torque value (%) and rotor speed (rpm) actual relationship synoptic diagram;
Fig. 2 is the synoptic diagram that concerns that adopts hairspring torque value (%) and rotor speed (rpm) after the bearing calibration linearity correction of the present invention;
Fig. 3 adopts bearing calibration of the present invention to import the synoptic diagram that concerns of hairspring torque value (%) and rotor speed (rpm) behind the accurate viscosity number of used No. 100 standard silicone oil.
Embodiment
The bearing calibration of rotary digital display viscometer of the present invention is, the external data processor of a data processing software that comprises a special use is set and links to each other with the RS232 interface of instrument, proofreaies and correct according to the following steps:
A, the uneasy rotor of viscosity meter rotate with rotating speed 12RPM in air; Set up the 1# rotor then, in air, rotate, regulate zero-bit and eliminate systematic error with rotating speed 60RPM;
B, being correcting fluid with No. 100 standard silicone oil, serves as to proofread and correct rotor with the 1# rotor, tests under rotating speed 3RPM, 6RPM, 18RPM, 30RPM, 45RPM and 60RPM respectively, obtains corresponding hairspring moment of torsion data and outputs to external data processor;
C, external data processor return viscosity meter through the data after will proofreading and correct behind the correction calculation, correction calculation comprises the highs and lows in the relation curve that calculates hairspring moment of torsion and rotating speed and it is proofreaied and correct, and simultaneously the non-linear of hairspring is carried out the whole process compensation with software.The hairspring torque value (%) after the linearity correction and the relation of rotor speed (rpm) are as shown in Figure 2.
The accurate viscosity number of d, used No. 100 standard silicone oil of input calculates the correct hairspring moment of torsion and the relation curve slope of rotating speed by the microprocessor in the instrument.The relation of importing hairspring torque value (%) and rotor speed (rpm) behind the accurate viscosity number of used No. 100 standard silicone oil as shown in Figure 3.
Claims (1)
1. the bearing calibration of a rotary digital display viscometer, rotary digital display viscometer comprise driver element, computing machine motherboard, the display unit of band microprocessor and the mechanical pick-up device that hairspring is housed; It is characterized in that, an external data processor is set, comprise the data processing software of a special use in this data processor, described bearing calibration may further comprise the steps:
A, the uneasy rotor of viscosity meter rotate with rotating speed 12RPM in air; Set up the 1# rotor then, in air, rotate, regulate zero-bit and eliminate systematic error with rotating speed 60RPM;
B, being correcting fluid with No. 100 standard silicone oil, serves as to proofread and correct rotor with the 1# rotor, tests under rotating speed 3RPM, 6RPM, 18RPM, 30RPM, 45RPM and 60RPM respectively, obtains corresponding hairspring moment of torsion data and outputs to external data processor;
C, external data processor return viscosity meter through the data after will proofreading and correct behind the correction calculation;
The accurate viscosity number of d, used No. 100 standard silicone oil of input calculates the correct hairspring moment of torsion and the relation curve slope of rotating speed by the microprocessor in the instrument;
The described correction calculation of step c comprises the highs and lows in the relation curve that calculates hairspring moment of torsion and rotating speed and highs and lows is proofreaied and correct, and simultaneously the non-linear of hairspring is carried out the whole process compensation with software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100513088A CN101887001B (en) | 2009-05-15 | 2009-05-15 | Method for correcting rotary digital display viscometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100513088A CN101887001B (en) | 2009-05-15 | 2009-05-15 | Method for correcting rotary digital display viscometer |
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| Publication Number | Publication Date |
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| CN101887001A CN101887001A (en) | 2010-11-17 |
| CN101887001B true CN101887001B (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100513088A Expired - Fee Related CN101887001B (en) | 2009-05-15 | 2009-05-15 | Method for correcting rotary digital display viscometer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175756A (en) * | 2011-12-22 | 2013-06-26 | 澳思登科学仪器(上海)有限公司 | Driving unit and liquid viscosity measurement instrument |
| CN107515175A (en) * | 2017-09-05 | 2017-12-26 | 湖南师范大学 | Rotary viscometer error compensating method, error-compensating apparatus and rotary viscometer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5509297A (en) * | 1995-02-17 | 1996-04-23 | Tannas Co. | Viscometer calibration |
| CN1036678C (en) * | 1992-05-14 | 1997-12-10 | 华中理工大学 | Computerized online viscosimeter |
| US7594429B2 (en) * | 2005-11-23 | 2009-09-29 | Waters Investments Limited | System and method for improved optical measurements during rheometric measurements |
-
2009
- 2009-05-15 CN CN2009100513088A patent/CN101887001B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036678C (en) * | 1992-05-14 | 1997-12-10 | 华中理工大学 | Computerized online viscosimeter |
| US5509297A (en) * | 1995-02-17 | 1996-04-23 | Tannas Co. | Viscometer calibration |
| US7594429B2 (en) * | 2005-11-23 | 2009-09-29 | Waters Investments Limited | System and method for improved optical measurements during rheometric measurements |
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| CN101887001A (en) | 2010-11-17 |
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