Dynamic characterisation of pressure transducers using shock tube methods

This paper describes the characterisation of the dynamic response of a range of pressure transducer systems. The transducers were subjected to virtually instantaneous pressure step inputs in the National Physical Laboratory’s shock tube facilities. The magnitudes of these pressure steps were derived from ideal gas theory, with prior commissioning tests having been performed to demonstrate the theory’s validity in this application. The results demonstrate a significant variation in response obtained from various combinations of transducer, instrumentation settings, and mounting arrangement.

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Measurement of Strong Shock Pressure

Shock and Vibration ◽

10.1155/1997/684909 ◽

1997 ◽

Vol 4 (5-6) ◽

pp. 403-409

Author(s):

Hajime Takada ◽

Daisuke Fujimaki ◽

Takao Tsuboi

Keyword(s):

Shock Tube ◽

Pressure Transducer ◽

Shock Absorber ◽

Transfer Functions ◽

Strong Shock ◽

Shock Pressure ◽

Pressure Transducers ◽

Pressure Peak

This paper deals with measurement of a strong shock pressure like an imploding detonation of over 1 GPa which cannot be measured directly with currently available commercial pressure transducers. After the transfer functions of three kinds of materials were measured using a shock tube, Teflon was selected as a shock absorber. As an example of pressure beyond the limit of the pressure transducer, we tried to measure pressure at the center of an imploding detonation. From this measurement, we could estimate the pressure peak of about 1.7 GPa.

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Correcting for Response Lag in Unsteady Pressure Measurements in Water

Journal of Fluids Engineering ◽

10.1115/1.2910198 ◽

1993 ◽

Vol 115 (4) ◽

pp. 676-679 ◽

Cited By ~ 3

Author(s):

Rand N. Conger ◽

B. R. Ramaprian

Keyword(s):

Dynamic Response ◽

Pressure Transducer ◽

Water Channel ◽

Inadequate Response ◽

Pressure Measurements ◽

Pressure Transducers ◽

Pitching Airfoil ◽

Unsteady Pressure ◽

Unsteady Pressure Measurements ◽

Type Pressure

There is not much information available on the use of diaphragm-type pressure transducers for the measurement of unsteady pressures in liquids. A procedure for measuring the dynamic response of a pressure transducer in such applications and correcting for its inadequate response is discussed in this report. An example of the successful use of this method to determine unsteady surface pressures on a pitching airfoil in a water channel is presented.

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Towards a shock tube method for the dynamic calibration of pressure sensors

Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rsta.2013.0299 ◽

2014 ◽

Vol 372 (2023) ◽

pp. 20130299 ◽

Cited By ~ 28

Author(s):

Stephen Downes ◽

Andy Knott ◽

Ian Robinson

Keyword(s):

Shock Tube ◽

Low Cost ◽

Pressure Sensors ◽

Pressure Change ◽

Maximum Pressure ◽

Shock Tubes ◽

Pressure Transducers ◽

Pressure Step ◽

Pressure Tubing ◽

Fast Rise

In theory, shock tubes provide a pressure change with a very fast rise time and calculable amplitude. This pressure step could provide the basis for the calibration of pressure transducers used in highly dynamic applications. However, conventional metal shock tubes can be expensive, unwieldy and difficult to modify. We describe the development of a 1.4 MPa (maximum pressure) shock tube made from unplasticized polyvinyl chloride pressure tubing which provides a low-cost, light and easily modifiable basis for establishing a method for determining the dynamic characteristics of pressure sensors.

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Application of shock tube in calibrating dynamic pressure transducers

Journal of Physics Conference Series ◽

10.1088/1742-6596/1064/1/012055 ◽

2018 ◽

Vol 1064 ◽

pp. 012055 ◽

Cited By ~ 1

Author(s):

Laijun Yan ◽

Yong Chen ◽

Lihu Zhang ◽

Xu Zhang ◽

Xianghong Yao ◽

...

Keyword(s):

Shock Tube ◽

Dynamic Pressure ◽

Pressure Transducers

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Does temperature affect the accuracy of vented pressure transducer in fine-scale water level measurement?

Geoscientific Instrumentation Methods and Data Systems ◽

10.5194/gi-4-65-2015 ◽

2015 ◽

Vol 4 (1) ◽

pp. 65-73 ◽

Cited By ~ 7

Author(s):

Z. Liu ◽

C. W. Higgins

Keyword(s):

Water Level ◽

Pressure Transducer ◽

Performance Test ◽

Thermal Fluctuations ◽

Field Conditions ◽

Digital Data ◽

Water Level Fluctuations ◽

Fine Scale ◽

Data Logger ◽

Pressure Transducers

Abstract. Submersible pressure transducers have been utilized for collecting water level data since the early 1960s. Together with a digital data logger, it is a convenient way to record water level fluctuations for long-term monitoring. Despite the wide use of pressure transducers for water level monitoring, little has been reported regarding their accuracy and performance under field conditions. The effects of temperature fluctuations on the output of vented pressure transducers were considered in this study. The pressure transducers were tested under both laboratory and field conditions. The results of this study indicate that temperature fluctuation has a strong effect on the transducer output. Rapid changes in temperature introduce noise and fluctuations in the water level readings under a constant hydraulic head while the absolute temperature is also related to sensor errors. The former is attributed to venting and the latter is attributed to temperature compensation effects in the strain gauges. Individual pressure transducers responded differently to the thermal fluctuations in the same testing environment. In the field of surface hydrology, especially when monitoring fine-scale water level fluctuations, ignoring or failing to compensate for the temperature effect can introduce considerable error into pressure transducer readings. It is recommended that a performance test for the pressure transducer is conducted before field deployment.

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On the Use of Fast-Response Pressure Transducers in a Common-Rail Diesel Injection System

Volume 4: Fatigue and Fracture, Heat Transfer, Internal Combustion Engines, Manufacturing, and Technology and Society ◽

10.1115/esda2006-95479 ◽

2006 ◽

Cited By ~ 2

Author(s):

R. Amirante ◽

L. A. Catalano ◽

A. Dadone ◽

V. Lombardo

Keyword(s):

Pressure Transducer ◽

Single Injection ◽

Electric Circuit ◽

Fast Response ◽

Common Rail ◽

Injection System ◽

Pressure Transducers ◽

Multiple Injections ◽

Diesel Injection ◽

Response Pressure

The aim of this paper is to investigate the use of fast-response pressure transducers for measuring the instantaneous pressure in different sections of a common-rail diesel injection system, both for a single injection and for multiple injections. The influence of the pressure transducer onto the measured pressure is evaluated numerically by comparing the pressure history computed without the pressure transducer and that computed with the presence, and thus with the disturbance, of this sensor. A new electric circuit is proposed in substitution of the standard electronic central unit, which allows to modify the injection parameters and to perform injections on a test rig, as done in the automotive applications. Experimental results are provided both for a single injection and for multiple injections, to demonstrate the capabilities of the proposed test bench for the unijet injectors.

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Dynamics of Closed Circuit Hydraulic Model Loops

Volume 1: Fora, Parts A and B ◽

10.1115/fedsm2002-31003 ◽

2002 ◽

Cited By ~ 1

Author(s):

Bjo̸rnar Svingen ◽

Morten Kjeldsen ◽

Roger E. A. Arndt

Keyword(s):

Theoretical Analysis ◽

Dynamic Response ◽

Theoretical Work ◽

Current Theory ◽

Water Tunnel ◽

Post Processing ◽

Global System ◽

Pressure Transducers ◽

Response Data ◽

Cavitating Hydrofoil

This paper reviews the issue of making unsteady measurements involving cavitating flow in traditional test loops. Measurements of the dynamic response of a water tunnel during testing of a partially cavitating hydrofoil are presented and reviewed in the context of current theory. Data were collected from an array of pressure transducers that were distributed around the tunnel loop. In the post processing of these data, gain and phase response data were calculated. Theoretical analysis consisted of splitting the system into different elements, and included the compressibility of water in the physics used to describe each element. While solving the global system an eigenvalue solution was found, thus no node specific solution is obtained. This work is currently being extended with the aim of obtaining node specific values such that a more direct comparison between the experimental and theoretical work can be made.

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Active Compensation of Lightly Damped Electrohydraulic Cylinder Drives Using Derivative Signals

Proceedings of the Institution of Mechanical Engineers ◽

10.1243/pime_proc_1969_184_011_02 ◽

1969 ◽

Vol 184 (1) ◽

pp. 83-98 ◽

Cited By ~ 8

Author(s):

R. Bell ◽

A. De Pennington

Keyword(s):

Dynamic Response ◽

Pressure Transducer ◽

System Analysis ◽

Active Damping ◽

Active Compensation ◽

Minor Loop ◽

Mechanical Damping ◽

Linearized Model ◽

Load Mass ◽

Friction Bearings

The dynamic response of a cylinder drive is considerably influenced by the mechanical damping at the load. This paper discusses the use of acceleration and pressure transducer signals to introduce active damping into drives where the load mass is supported on anti-friction bearings, i.e. where the inherent mechanical damping is a minimum. The analysis is based on the use of a linearized model. The significance of the model and the system analysis is substantiated by the results of experiments carried out to assess the merits of these forms of minor loop compensation.

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