why gray colour is choosing to all instrument panel.why not choosing other colour?
The color Gray is used because it is a neutral color.
One consideration in the selection of color is heat dissipation.
IEEE published a paper by Ralph H. Lee at E. I. Du Pont (1975), The Effect of Color on Temperature of Electrical Enclosures Subject to Solar Radiation by Effect of Enclosure Color and Finish, which is summarized by the extract:
"Electrical enclosures have historically been painted with dark colors ostensibly to enhance the radiation of internally generated heat.
Outdoors, these dark colors are great absorbers of solar radiation, from which the enclosure incurs an appreciable temperature rise. The lighter colors absorb less solar radiation, incurring smaller solar temperature rise. However, it is demonstrated that these lighter colors radiate the lower temperatures of the equipment as well as the darker colors.
Hence, equipment painted with the lighter colors will operate at a lower temperature and be subject to less severe derating from the effects of solar radiation."
Many vendors offer custom painted enclosures.
Carl Ellis
Measure First
Is This Answer Correct ? | 4 Yes | 1 No |
I am working in a process industry, in that there are several sections devided in the SCADA screens and individual sections may START independently. But sometimes i am facing problem i.e, if section 2 Stopped by the operator immediately Section 1 or Section 3 or Section 4 is getting stopped can you expain the reason behind this?
Pls can anybody tell me how much memory plc's has?in byte or in Kb
What are the type of bonnets in the control valves?
what is reset windup in integral control?
can u please tell me the different types of valve uses and wt purposes it is used ~!(controlling the flow other than that which valve should be used in what place)
Dead weight tester & comparator for calibration , which is more accurate , what is the application.
1 Answers Bapco Bahrain Petroleum Company,
what is beta ratio?
what is type of protocol used in instrument field to marshalling cabinet cabel. what is the differenance between bus cabel and instrument cabel?
IF PLC POWER FAILURE THEN WHAT HAPPEN?
How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.
What is three element in drum level?
why we use 4-20 mA for calibration of the instruments.why we cant use 0-20 mA?