The working principle, process device and test procedure of runner static balancing test method by weighting with three-pivot pressure transducers are introduced in this paper. Based on an actual instance of a V hydraulic turbine runner, the error and sensitivity of the three-pivot pressure transducer static balancing method are analysed. Suggestions about improving the accuracy and the applica...

hoosing a pressure transducer for a precision measurement system (one where the total error budget is less than 1 percent) has traditionally not been a simple matter of going to a catalogue and quickly finding a device to fit the needs of the application. The task of selection was complicated by many factors, among them specifications that were often deceptive, and hidden error sources both in ...

This paper describes a high-temperature pressure-transducer interface for resistive Wheatstone bridges. The long-term drift of the smart sensor, i.e., the (pressure) sensor plus its interface electronics, will be determined by the drift of the sensor element only. A three-signal auto-calibration sequence of the interface electronics keeps the transducer interface virtually free of long-term dri...

A widely-used technique for reciprocating compressnr research is to use miniature pressure transQucers to measure cylinder pressure. A great deal of useful information on cylinder processes can be obtaine·· "!J this manner, providing that the information is accurate. These transducers must often be mounted outside the cylinder, in adapters, due to space constraints and interfering structures (s...

A catheter-tip velocity transducer with two high-fidelity pressure manometers was used to evaluate the left ventricular (LV) hemodynamic effects of intravenous propranolol (10 mg). Nine patients without clinical evidence of heart failure were studied. Pulsatile ascending aortic blood flow velocity and pressure and LV pressure were measured continuously during drug administration. Beat-to-beat c...

experiments were conducted to evaluate the performance of a low heat rejection (lhr) diesel engine. performance parameters and emission levels were determined at various magnitudes of brake mean effective pressure. combustion characteristics of the engine were measured with tdc (top dead centre) encoder, pressure transducer, console and special pressure-crank angle software package at peak load...

Objective: For many years in herbal medicine the antihypertensive and lowering blood lipid properties of Achillea wilhelmsii (A. wilhelmsii) have been suggested. In the present study the impacts of the plant extract on rabbit’s blood pressure and heart rate have been investigated. Materials and Methods: Twelve NWZ rabbits weighed 2-3 kg were randomly divided into two groups of 6 rabbits. The t...

Experiments were conducted to evaluate the performance of a low heat rejection (LHR) diesel engine. Performance parameters and emission levels were determined at various magnitudes of brake mean effective pressure. Combustion characteristics of the engine were measured with TDC (top dead centre) encoder, pressure transducer, console and special pressure-crank angle software package at peak load...