Warm hydrostatic piezoelectric constant tester (dₕ tester) is used to measure the piezoelectric constant dₕ of under different hydrostatic pressures and temperatures. In addition, by connecting an external impedance analyzer, it can also test the changing trends of constants such as the dielectric properties of piezoelectric samples with the variation of hydrostatic pressure and temperature.
| Models | Hydrostatic pressure range | Temperature range | Dimensions of high pressure tank | Pressure holding timing duration | Charge test range | Time constant of charge amplifier | Manuals |
| DHT 1000 | 5~100MPa (Customizable) | Room temperature~200ºC (Customizable) | 100mm(Diameter)*150mm(Height) (Customizable) | >1h | 100~5×106pC | >1000 seconds |
1. S. S. Sun, Y. Q. Chen, S.S Li, R. Y. Jia, A. L. Xiao, L. G. Tang, W. Y. Luo, Two-sample characterization of elastic and piezoelectric constants of piezoelectric materials via combination of ultrasonic pulse-echo,electric resonance,and hydrostatic piezoelectric constant measurements, Ceramics International, 51(30):62836-62843, 2025.
2. P.Hana, L.Burianova, S.Panos1,The dynamic method of determination of the piezoelectric hydrostatic coefficients, Sensors and Actuators A, 110: 318–322, 2004.
3. J. J. Gao, Z. Xu*, F. Li, C. H. Zhang, Y. Liu, G.M. Liu, and H. L. He, The hydrostatic piezoelectricity of Relaxor-PbTiO3 ferroelectric ceramics and crystals, Journal of Advanced Dielectrics, 2(3): 1250018, 2012.