M.Sc Courses in Measurement Science at Manchester

1986 ◽  
Vol 23 (4) ◽  
pp. 303-309
Author(s):  
H. Rosemary Taylor ◽  
P. A. Payne

Electrical and electronic measuring instruments are used today in all branches of science and engineering. There is a considerable fund of knowledge which is fundamental to all measuring instruments and which will still be valid when today's instruments have been superseded. This one year M.Sc. course aims to teach these fundamentals illustrated by many examples of sensors and instruments used for widely different purposes.

1996 ◽  
Vol 2 (1) ◽  
pp. 3-4
Author(s):  
Stephanie J. Bird ◽  
Ray Spier

2019 ◽  
Vol 111 ◽  
pp. 02007
Author(s):  
Hiroki Takahashi ◽  
Mariya Petrova Bivolarova ◽  
Athanasia Keli ◽  
Jürgen Nickel ◽  
Arsen Krikor Melikov

The accurate data of outdoor CO2 concentration are important for the proper design of ventilation and thus for indoor air quality and energy use in buildings. Typical design practice is to assume outdoor CO2 concentration to be 400 ppm. However, the outdoor CO2 concentration may be different in different areas of cities. This paper presents preliminary results of long-term (one year) outdoor CO2 concentration changes in four districts of Copenhagen (Denmark). The districts included downtown area and suburbs with different surroundings. Four buildings were selected for the measurements, one building in each district. Outdoor CO2 concentration measurements were performed at two levels – ground level and top of the buildings. Special attention was paid to use accurate measuring instruments. The instruments were carefully calibrated before the measurements. The calibration of the instruments was checked periodically. In this paper, preliminary results from summer and autumn measurements are presented. The outdoor CO2 concentration varied over the day and from day to day in the range between 340 and 450 ppm. The CO2 concentration at the ground of the buildings was usually 10 to 40 ppm higher than that at the top level in autumn. At the buildings in the suburbs, during the working hours, the outdoor CO2 concentration measured on the top level close to the intake duct was on average 408 ppm. At the building in the downtown area, that was on average 414 ppm. However, the outdoor CO2 concentration varied depending on the building, level and time. During the working hours, the 75 percentiles of outdoor CO2 concentration varied between 384 ppm and 442 ppm, which indicates that the required ventilation rate could be different over 10% depending on the building location site, measurement height and time. In order to ensure the required indoor limits of CO2 concentration, CO2 measurements must be performed close to the location of the outdoor air intake.


2018 ◽  
Vol 28 (4) ◽  
pp. 76-84
Author(s):  
R. S. Anosov ◽  
D. M. Byvshikh ◽  
S. G. Zelenskaya

The cost of electronic measuring instruments is influenced by their technical characteristics and design factors. Moreover, this influence is often complex non-linear in nature, which greatly complicates the construction of an adequate cost forecast. When justifying the composition of complex measuring systems, the error can be significant and lead to a non- optimal solution. Therefore, improving the quality of forecasts of measuring instruments cost, that are part of the system for testing special-purpose electronic equipment is an urgent task, which is considered in the presented article. When considering the main approaches to forecasting measuring instruments cost, the apparatus of economic and mathematical methods is applied: mathematical statistics, qualitative analysis of the main characteristics and factors determining the measuring instruments cost, comparative analysis of the technical level of radio-electronic equipment samples, and the analog method. As an example, additive and multiplicative models are considered for practical calculations of the cost of high-frequency signal generators and spectrum analyzers as a function of the technical characteristics of these devices. Corrective functions have been identified, the use of which significantly improves the accuracy of forecast, which proves the feasibility of using such functions in forecast models of the measuring equipment cost.


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