Liquid Conductivity Sensor Based on AgPd Paste Fabricated on an Al₂O₃ Substrate Using Screen Printing Technique

Abstract:

In this paper, the design and fabrication of a liquid conductivity sensor based on AgPd paste will be described. The device was designed in a four-electrode configuration on a 10 x 25 mm² 96% Al₂O₃ substrate. The distance between the two driving electrodes was 4 mm, whereas the distance between the two measuring electrodes was 2 mm.The device was also integrated with a Ruthenium based temperature sensor printed on the backside of the substrate. Initial characterisation showed that the conductivity sensor has a measured sensitivity and cell constant of 1.67 cm and 0.51 cm^-1, respectively, when a frequency of 1 kHz square wave input was appliedto the driving electrodes. Sensor’s respond variation against temperature was measured around 27.89 μS/°C, corresponding to 2.22 temperature compensation value for salt solution. The results showed a stable response over 5 days measurement cycle, indicating the sensor’s potential for field water quality monitoring application.

• Periodical: Materials Science Forum (Volume 887)
• Pages: 108-115
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.887.108
• Online since: March 2017
• Authors: Goib Wiranto, I Dewa Putu Hermida, Hiskia Hiskia, Beni Rama, Dadi Rusdiana
• Keywords: AgPd, Conductivity Sensor, Screen Printing, Thick Film, Water Quality Monitoring

References

[1] J. K. Buttner, R. W. Soderberg, D. E. Terlizzi, An introduction to water chemistry in freshwater aquaculture, NRAC Fact Sheet No. 170-(1993).

[2] W. –Y. Chung, J. –H. Yoo, Remote water quality monitoring in wide area, Sensor. Act. B., 217 (2015), p.51 – 57.

[3] Total dissolved solids in Drinking-water, Background document for development ofWHO Guidelines for Drinking-water Quality, World Health Organization, Geneva, (2003).

[4] L. Parra, S. Sendra, J. Lloret, I. Bosch, Development of a conductivity sensor for monitoring groundwater resources to optimize water management insmart city environments, Sensors, 15 (2015), p.20990 – 21015.

DOI: 10.3390/s150920990

[5] M. Sophocleous, J. K. Atkinson, A novel thick-film electrical conductivity sensor suitable for liquidand soil conductivity measurements, Sensor. Act. B., 213 (2015), p.417– 422.

DOI: 10.1016/j.snb.2015.02.110

[6] D. L. Corwin, S. M. Lesch, Apparent soil electrical conductivitymeasurements in agriculture, Comp. Elec. in Agri., 46 (2005), p.11–43.

[7] P. M. Ramos, J. M. D. Pereira, H. M. G. Ramos, A. L. Ribeiro, A four terminal water quality monitoringconductivity sensor, IEEE Tran. Instr. Meas., 57, 3 (2008), p.577 – 583.

DOI: 10.1109/tim.2007.911703

[8] G. Liu, C. Ho, N. Slappey, Z. Zhou, S.E. Snelgrove, M. Brown, A. Grabinski, X. Guo,Y. Chen, K. Miller, J. Edwards, T. Kaya, A wearable conductivity sensor for wireless real-time sweatmonitoring, Sensor. Act. B., 227 (2016), p.35 – 42.

DOI: 10.1016/j.snb.2015.12.034

[9] J. K. Atkinson, M. Glanc, M. Prakorbjanya, M. Sophocleous, R. P. Sion, E. Garcia-Breijo, Thick film screen printed environmental and chemical sensor array reference electrodessuitable for subterranean and subaqueous deployments, Microelec. Int., 30, 2 (2013).

DOI: 10.1108/13565361311314485

[10] M. H. Banna, H. Najjaran, R. Sadiq, S. A. Imran,M. J. Rodriguez, M. Hoorfar, Miniaturized water quality monitoring pH and conductivity sensors, Sensor. Act. B., 193 (2014), p.434 –441.

DOI: 10.1016/j.snb.2013.12.002

[11] S. L. Schiefelbein, N. A. Fried, K. G. Rhoads, D. R. Sadoway, A high-accuracy, calibration-free technique for measuring the electrical conductivity of liquids, Rev. Sci. Inst., 69, 9 (1998), p.3308 – 3313.

DOI: 10.1063/1.1149095

[12] S. Zhuiykov, Solid-state sensors monitoring parameters of water quality for the nextgeneration of wireless sensor networks, Sensor. Act. B., 161 (2012), p.1 – 20.

DOI: 10.1016/j.snb.2011.10.078

[13] Y. Lin, Y. Peng, J. Di, Electrochemical detection of Hg(II) ions based on nanoporous goldnanoparticles modified indium tin oxide electrode, Sensor. Act. B., 220 (2015), p.1086–1090.

DOI: 10.1016/j.snb.2015.06.064

[14] T. Li, K. Ding, W. E. Seyfried, Jr., Y. B. Gianchandani, A micromachined chemical sensor for sea floor environments: Initial results, Tech. Dig. Sol. Sta. Sens., Act., Microsys. Works., (2012), p.173 – 176.

DOI: 10.31438/trf.hh2012.46

[15] X. Huang, M. C. Mowlem, R. Pascal, K. Chamberlain, C. Banks, H. Morgan, A miniature high precision conductivity and temperaturesensor system for ocean monitoring, IEEE Sens. J., 11, 12 (2011), p.3246 – 3252.

DOI: 10.1109/jsen.2011.2149516

[16] Conductivity theory and practice, Radiometer Analytical, France (2004).

[17] J. J. Barron, C. Ashton, The effect of temperature on conductivity measurement, http: /www. reagecon. com/pdf/technicalpapers/Effect_of_Temperature_TSP-07_Issue3. pdf, p.1 – 5.