Low-Cost Sensor for Continuous Measurement of Brix in Liquids

This paper presents a Brix sensor based on the differential pressure measurement principle. Two piezoresistive silicon pressure sensors were applied to measure the specific gravity of the liquid, which was used to calculate the Brix level. The pressure sensors were mounted inside custom-built water-...

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Main Authors: Swapna A. Jaywant, Harshpreet Singh, Khalid Mahmood Arif
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/23/9169
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author Swapna A. Jaywant
Harshpreet Singh
Khalid Mahmood Arif
author_facet Swapna A. Jaywant
Harshpreet Singh
Khalid Mahmood Arif
author_sort Swapna A. Jaywant
collection DOAJ
description This paper presents a Brix sensor based on the differential pressure measurement principle. Two piezoresistive silicon pressure sensors were applied to measure the specific gravity of the liquid, which was used to calculate the Brix level. The pressure sensors were mounted inside custom-built water-tight housings connected together by fixed length metallic tubes containing the power and signal cables. Two designs of the sensor were prepared; one for the basic laboratory testing and validation of the proposed system and the other for a fermentation experiment. For lab tests, a sugar solution with different Brix levels was used and readings from the proposed sensor were compared with a commercially available hydrometer called Tilt. During the fermentation experiments, fermentation was carried out in a 1000 L tank over 7 days and data was recorded and analysed. In the lab experiments, a good linear relationship between the sugar content and the corresponding Brix levels was observed. In the fermentation experiment, the sensor performed as expected but some problems such as residue build up were encountered. Overall, the proposed sensing solution carries a great potential for continuous monitoring of the Brix level in liquids. Due to the usage of low-cost pressure sensors and the interface electronics, the cost of the system is considered suitable for large scale deployment at wineries or juice processing industries.
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spelling doaj.art-8a8d230231734fa5bb34fb6c466820532023-11-24T12:09:37ZengMDPI AGSensors1424-82202022-11-012223916910.3390/s22239169Low-Cost Sensor for Continuous Measurement of Brix in LiquidsSwapna A. Jaywant0Harshpreet Singh1Khalid Mahmood Arif2Department of Mechanical and Electrical Engineering, SF&AT, Massey University, Auckland 0632, New ZealandNew Zealand Product Accelerator, The University of Auckland, Auckland 1010, New ZealandDepartment of Mechanical and Electrical Engineering, SF&AT, Massey University, Auckland 0632, New ZealandThis paper presents a Brix sensor based on the differential pressure measurement principle. Two piezoresistive silicon pressure sensors were applied to measure the specific gravity of the liquid, which was used to calculate the Brix level. The pressure sensors were mounted inside custom-built water-tight housings connected together by fixed length metallic tubes containing the power and signal cables. Two designs of the sensor were prepared; one for the basic laboratory testing and validation of the proposed system and the other for a fermentation experiment. For lab tests, a sugar solution with different Brix levels was used and readings from the proposed sensor were compared with a commercially available hydrometer called Tilt. During the fermentation experiments, fermentation was carried out in a 1000 L tank over 7 days and data was recorded and analysed. In the lab experiments, a good linear relationship between the sugar content and the corresponding Brix levels was observed. In the fermentation experiment, the sensor performed as expected but some problems such as residue build up were encountered. Overall, the proposed sensing solution carries a great potential for continuous monitoring of the Brix level in liquids. Due to the usage of low-cost pressure sensors and the interface electronics, the cost of the system is considered suitable for large scale deployment at wineries or juice processing industries.https://www.mdpi.com/1424-8220/22/23/9169Brix sensorpressure sensorhydrometerdifferential pressurespecific gravitywine fermentation
spellingShingle Swapna A. Jaywant
Harshpreet Singh
Khalid Mahmood Arif
Low-Cost Sensor for Continuous Measurement of Brix in Liquids
Sensors
Brix sensor
pressure sensor
hydrometer
differential pressure
specific gravity
wine fermentation
title Low-Cost Sensor for Continuous Measurement of Brix in Liquids
title_full Low-Cost Sensor for Continuous Measurement of Brix in Liquids
title_fullStr Low-Cost Sensor for Continuous Measurement of Brix in Liquids
title_full_unstemmed Low-Cost Sensor for Continuous Measurement of Brix in Liquids
title_short Low-Cost Sensor for Continuous Measurement of Brix in Liquids
title_sort low cost sensor for continuous measurement of brix in liquids
topic Brix sensor
pressure sensor
hydrometer
differential pressure
specific gravity
wine fermentation
url https://www.mdpi.com/1424-8220/22/23/9169
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AT khalidmahmoodarif lowcostsensorforcontinuousmeasurementofbrixinliquids