In this paper, efforts have been made to develop a Wireless Sensor Network based system to monitor physical parameters of a moving object or geographically distributed sensor array. Using this system one can monitor the parameters of the moving object to ensure its optimal movement. Such objects include automobiles, aircraft etc, while the parameters may be acceleration, rate of change of g (acceleration due to gravity), or inclination. Whenever any of these parameters crosses the set limits, the system will give suitable indications. The sensors to monitor these parameters would be part of the wirelessly connected nodes on-board the moving object. These nodes (termed End Device) will remain connected to a central master unit (termed Access Point) and will in turn be connected to a PC where all the sensor data will be collected, processed and displayed through the GUI of the PC.

The development of a system for determining step response of total vacuum gauges is described as well as results for some typical vacuum gauges. The system is mainly suitable for steps from atmospheric pressure down to around 50 Pa. Step response times reached with the system are (with reasonable sizes of DUT internal volumes) about 20 ms.

Metrological characteristics of 1 GPa controlled clearance piston gauge (CCPG) were investigated using a finite element method (FEM). These are a piston/cylinder distortion coefficient in free deformation mode, distortion coefficient of jacket pressure and stall pressure in controlled clearance mode. The effective area of CCPG was constant according to different applied pressure when relative jacket pressure of 17.3 % was applied. Comparison experiments with KRISS 500 MPa standards were carried out to verify the FEM results.

This paper describes how to implement a high dynamic pressure instrument using a step pressure generator and standardization based on a medium density equation. The step dynamic pressure without any big vibration due to an impulse caused by a trigger mechanism is generated upto 800 MPa. A basic design concept to eliminate the unnecessary vibration is proposed. In addition, density equations according to pressure are used to establish the high dynamic pressure standard. On the other hand, the effectiveness of conventional sebacate(di-2-ethylhexyl sebacate) oil density equations could be verified by the instrument.

Pressure gauges including strain-gauge transducers and Manganin gauges are calibrated and characterized in the pressure range up to 1 GPa. For the calibration and characterization, the pressure generating system using a pressure balance and a precise pressure multiplier has been developed as a pressure standard. In this paper, the pressure generating system, the method for calibrating the pressure gauges by using the system and the results obtained are presented. The temperature coefficients of Manganin gauges are also evaluated in the pressure range.