Instrumentation System Assignment Lab Report Example | Topics and Well Written Essays - 1000 words

Instrumentation System Assignment - Lab Report Example The movement is then transduced into an electrical output. Finally, the signal conditioning is needed, depending on sensor and type of application. The Bourdon tubes are example of the major types of sensing elements; they are sealed and deflect in response to any applied pressure. The Pressure gauge is a self-contained indicator used in converting the detected process pressure into proportional mechanical motion of the pointer. The pressure transducer might be a combination of the sensor element of the gauge with mechanical-to-pneumatic with a power supply or mechanical-to-electrical converter. The system might have a signal conditioner for converting the transducer signal into a proportional standardized output. Transducer’s accuracy denotes the degree of conformity or agreement of the measured value in relation to an accepted standard; usually expressed in percentage of the actual or of the full-scale reading of the instrument; for the percentage-full-scale devices, the error increases proportionally as the absolute values of the measurement drop. The repeatability the bourdons transducer refers to the closeness to agreement in a number of consecutive physical measurements of the same given variable. Linearity refers to the measurement of the wellness the transducers output increase linearly with pressure increase. Hysteresis error is a phenomenon characterized by the same pressure process resulting from different output signals dependant on whether the present pressure is approached from higher or lower pressure. Digital pressure instrument contain microprocessors that have improved the built-in diagnostic capabilities; increased their accuracy by the introduction of digital compensation that reduces the sensors’ nonlinearities; and have the capability of communicating digitally with the host device in availing different parameters. The Bourdon tube has elliptical hollow tube, when there is pressure difference between the outside and inside the

Comparitive Studies of Enviormental Policies in China & USA Essay

Comparitive Studies of Enviormental Policies in China & USA - Essay Example These policies have become necessary because of increasing population growth rates in both countries. Presently, the population of the United States is estimated as 311, 591, 917 people whiles that of China is given as 1,344,130,000; the highest in the world (FAO, 1986). Looking at the difference, there is every justification in the fact that China would have a stricter population control policy and that is exactly what the case is. Presently, there are policies such as one-child policy, which has an aim of providing better health care to mothers and the general population by reducing the number of children each woman bears to one. There have also been birth control policies in China. In the United States however, birth control campaigns have been the major policies whiles excluding a restrictive policy like one-child per family. Consequently, China has a firmer population control policy than the United States and the understanding is in the difference in population between the two c ountries. On pollution control, analysts argue that the United States is far advanced and ahead than China. What has perhaps created the difference in significance towards the policy approaches has to do with the ideologies that both countries have in terms of modern development (Asian Development Bank, 2002). it would be observed perhaps that whereas the United States sees herself as a nation who has achieved so much in terms of development and does not have to be very pragmatic towards national development to the detriment of the environment, China sees herself as a new global perspective for development, who must take advantage of all forms of industrialization to complete her development dreams. For this reason, there are more freedoms on the use of pollutants that may eventually result in pollution in China in the name of industrialization than there is in the United States. There could therefore be very tangible policies such as air pollution regulations, US pollution control laws and regulation, and nonpoint source water pollution regulation all in the United States. Just as with pollution, the United States presents its industries and the general public with stricter policies that guide against global warming. It would be noted that some key components of pollution such as air pollution that is related to the emission of harmful carbon chemicals is directly related to global warming (Bockstael et al, 2000). This means that policies in both countries that are used to cater for air pollution could directly be related and liked to the control of global warming (Dyson, Bergkamp and Scanlon, 2004). From this direction, it could clearly be said that the United States with the Environmental Protection Agency fully in force to clamp down on all forms of air pollution and carbon emission also caters for global warming in a much vehement way than it is done in China. A clear justification of this could be seen with the liberty given to Chinese industries to buil d chimneys as precautious measures whereas in the United States it is an enforcement to do so. Both the United States and China are fast growing on the need to preserve the environment through the promotion of the use environmentally friendly energy supply. It would be seen for instance that in the United States, there is presently a policy that is fading the era of use of non-renewable energy such as gas. The use of hydropower is also being minimized as the