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Pressure
Published in Martin Novák, Introduction to Sensors for Electrical and Mechanical Engineers, 2020
The deadweight tester is used to calibrate other pressure sensors, for example, deformation types. It is used for high pressures, typically in range 1 to 2000 bar (100 kPa to 200 MPa). The typical error is about 0.015% of measured value. The price is around 8000 euros or more. Examples of deadweight testers are shown in figures 10.4 and 10.5.
Investigation of gas hydrate phase equilibria in bulk and in a large particle size natural quartz sand for methane, carbon dioxide and natural gas
Published in Petroleum Science and Technology, 2023
Lucila Cruz-Castro, Edgar Ramirez-Jaramillo, Apolinar Albiter-Hernández
The isochoric experiments were conducted using a stainless-steel cell apparatus with a volume of 250 cm3 (Vinci Technologies, France). This cell can operate at pressures up to 20.7 MPa and within the temperature range of 263–333 K. Include a magnetic stirring system (speed up to 1000 rpm), a temperature sensor (Pt100) and a digital gauge pressure (GS4200, Keller GmbH). The measurement errors of each sensor is ± 0.1 K and 0.1% in the range 0–20.7 MPa, respectively. The cell temperature is controlled by a thermostatic bath (Huber MPC 219755) with a thermostatic fluid (water and glycol at 15%) and an additional platinum resistance thermometer Pt100 (with a measurement error of 0.1 K), which measures the temperature of the coolant in the bath. All the sensors were calibrated prior to the experiments. The temperature sensors were calibrated with the reference thermometer Digi-Sense 92000-01 and with a Platinum resistance calibrator (Burns Eng. 12005) type reference sensor. The digital gauge pressure was calibrated with the Fluke Calibration P3124 Hydraulic Deadweight Tester. The adequacy of the temperature sensor readings was estimated by measuring the melting point of distilled water at atmospheric pressure. The measured melting point in each cell was 273.15 K. The cooling/heating rate used was of 0.7 K/h (Romero-Martínez et al. 2020).