Development and Experimental Study of an Experimental Setup for an Online Vibrating Tube Liquid Densitometer

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

This manuscript presented a development and experimental study of an experimental setup liquid densitometer. The work has some potential. However, some points listed below need to be improved.

 

Abstract: I suggest add more numerical results to the abstract.

 

Introduction: please clearer the novelty of this work.

 

I suggest describe the meaning of each variable described in equations 1-9.

 

Table 1: how many test were performed to determine the uncertainty presented in Table 1?

 

Please check the tables numeration. There are two tables 1.

 

Please better describe what is Mixture 1 and Mixing solution 2, industrial white oil. Is the liquid viscosity a key factor for some deviations in the obtained results?

 

Table 1 to Table 4: I suggest better comment the variations on the fit error for the liquids evaluated.

Author Response

Dear Mr. Reviewer, Thank you for your responsible review of this paper!

1.I suggest add more numerical results to the abstract.

yes, can be improved.I will confer with my teacher, Dr. Sun, and decide.

2.Introduction: please clearer the novelty of this work.

Yes,in subsequent revisions of the paper, a novelty description of the device will be added to the introduction section.

3.I suggest describe the meaning of each variable described in equations 1-9.

Yes, in the newly revised paper, the parameters of Eqs. 1-9 are described and illustrated

4.Table 1: how many test were performed to determine the uncertainty presented in Table 1?

The device and October 2021 to complete the design and processing, device test run time of more than half a year after the uncertainty of the test evaluation, in June 2022 for the device uncertainty of the formal evaluation, evaluation results for U = 0.08kg/m³, k = 2, and the results of China's metrological science and technology research experts teacher evaluation that the evaluation results are reasonable and reliable, in the subsequent experiments have also proved that In the subsequent experiments also proved that the results are reliable and reasonable.

5.Please check the tables numeration. There are two tables 1.

Sorry for the duplication of table numbers due to the food numbering of the previous tables, but the incorrect numbering of the tables will be corrected in subsequent revisions.

6.Please better describe what is Mixture 1 and Mixing solution 2, industrial white oil. Is the liquid viscosity a key factor for some deviations in the obtained results?

Mixed liquids 1 and 2, respectively, are mixtures of alcohol and aqueous solutions in different proportions. The reason for the different frequencies of the vibrating tubes viscosity is one of the reasons but not the key factor, the difference in density of the different solutions is the key factor in the frequency of vibration.

7.Table 1 to Table 4: I suggest better comment the variations on the fit error for the liquids evaluated

Subsequent revisions to the paper will describe the changes in fitting error

Thank you again for your valuable comments on the paper!

 

 

Reviewer 2 Report

Comments and Suggestions for Authors

This is a very thoroughly conducted study on on-line density measurement using the vibrating tube method. The manuscript is well written and well documented, with a discussion of context and with all necessary references. The setup is described and the conducted tests are clearly presented. Uncertainties are evaluated and discussed. This topic is mainly metrology, which is consistent with the scope of Applied Science. Finally, I could not detect any imperfection in this manuscript and I recommend its acceptation in present form.

Author Response

Dear reviewers,

Thank you for a thorough review of my manuscript!

Reviewer 3 Report

Comments and Suggestions for Authors

Authors are reporting the preliminary characterization of a complete experimental engineered to investigate various parameters such as pressure and temperature impacting the densiometeric measurements. 

The reported work is novel and would find good application both for scientific and industrial applications.  

The work is well organized and the chosen concepts are  clearly represented. The introduction provides sufficient background and includes relevant references. The concept is clearly presented and well explained. Even if the work is complete in its present form, I would recommend publication after a minor revision.

 

I would like to thank all the Authors for their efforts and I kindly ask them to address my comments and suggestions below:

 

1.           The text is clearly written and well presented. The English language and style are fine still an overall spell check would be beneficial.

2.           I would suggest the authors to use their formal e-mail addresses. (Affiliated with their formal institutes).  And also, the e-mail addresses for all authors must be noted.

3.           Numeric values and/or experimental parameters should not be given at the abstract.  I kindly ask the authors to shape the abstract accordingly.     

4.           I would suggest the authors to better summarize the text and results at the conclusion. In the future work plans expressed in the conclusion, it would be beneficial to give more application based perspectives with referenced problems in the scientific community.

5. The significant figures and the error percentages for quantified values given for diverse physical quantities (temp, period, density…vs) do not match in between each other’s. This must be corrected in all of the tables. For instance in table 1. Temp is given with 3 digits 20.001, corresponding to +- 0.0001 error… on the other hand in the figures the errors are given with two digits (0.02). more over all parameters must be adjusted accordingly to the max error percentage since the correlated parameters with different error parameters do not have a physical logic.

 

This was just an example, all parameters and  tables and figures must be re-organized accordingly.

 

6. the benefits of the engineered system, with respect to the other commercially available systems must be better and further explained within the text. More examples of other systems being utilized up to date must be emphasized with references and applications.

 

 

Comments on the Quality of English Language

The English language and style are fine still an overall spell check would be beneficial.

Author Response

Dear Reviewer

Thank you very much for your responsible and comprehensive review!

1.The text is clearly written and well presented. The English language and style are fine still an overall spell check would be beneficial.

Yes, in the next revision of the paper I will fully check the English spelling and try to have no spelling mistakes in the whole text!

 2. I would suggest the authors to use their formal e-mail addresses. (Affiliated with their formal institutes).  And also, the e-mail addresses for all authors must be noted.

I will indicate the email addresses of all the authors, but some of the authors are in the process of applying for their organization's email address, and I will change it as soon as the application is complete.

3.Numeric values and/or experimental parameters should not be given at the abstract.  I kindly ask the authors to shape the abstract accordingly.  

Regarding the revision of the abstract I will complete it as soon as possible, and in the meantime, I will communicate further with my advisor Dr. Sun to finalize the revision of the abstract.

4.I would suggest the authors to better summarize the text and results at the conclusion. In the future work plans expressed in the conclusion, it would be beneficial to give more application based perspectives with referenced problems in the scientific community. 

Yes, I will revise the conclusions of the thesis with the application of the device, seeking to show that the thesis is useful in future applications of the device.

5.The significant figures and the error percentages for quantified values given for diverse physical quantities (temp, period, density…vs) do not match in between each other’s. This must be corrected in all of the tables. For instance in table 1. Temp is given with 3 digits 20.001, corresponding to +- 0.0001 error… on the other hand in the figures the errors are given with two digits (0.02). more over all parameters must be adjusted accordingly to the max error percentage since the correlated parameters with different error parameters do not have a physical logic.

I will adjust the temperature decimal places and error decimal places to maintain consistency, I suggest that the frequency value and density value to maintain more decimal places, so that it is easy to observe the frequency change on the fitting coefficient and the change of the fitted density, because in the previous experiments we found that the frequency value change is greater than 0.02us when the change of the fitting coefficient is an important influence, so I suggest that the density value and frequency value to maintain more decimal places to facilitate the observation of the The above data are all raw data collected by high precision sensors.

I will check the data in all the graphs to ensure the completeness and accuracy.

6.the benefits of the engineered system, with respect to the other commercially available systems must be better and further explained within the text. More examples of other systems being utilized up to date must be emphasized with references and applications.

Through the current review of open literature, the device is China is currently carrying out open experiments for the few experimental devices (two sets), (China Academy of Measurement Sciences a set of Xinjiang Institute of Measurement and Testing a set), the device was built after more than half a year of stability after the completion of the operation of the Chinese Academy of Measurement of Science after the expert review of the device's overall uncertainty of U = 0.08kg / m³, k = 2, has a carry out the requirements of the subsequent experiments. Of course, I will follow up more literature, compared to the differences between the existing devices to carry out more useful experiments, to find more examples of applications.

Thank you once again for reviewing this thesis in a comprehensive and responsible manner, and I wish you all the best in your endeavors！

 

 

 

 

 

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

After corrections the manuscript reads well. I suggest publication in its current form.

Author Response

Dear reviewer
Thank you for your responsible reviewing attitude and for reviewing my manuscript several times!