FOR CO/CO2/O2/NOX applications which of the following
manufature is best? and what is the basic principle of gas
analysers?
ABB/YOKOGAWA/EMERSON/SIEMENS/TELEDYNE/THERMOFISHER
Answers were Sorted based on User's Feedback
Answer / farooq
well i have experience for working on horiba and siemens
analyzers and i found siemens analyzer is better and
infrared light absorpion principle is being used
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / mpf
Unfortunatly that is bound more to the investor than to the
quality of the named...
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So I'm a first year apprentice and I'm having a tough time with knowing the difference between AI, AO, DI, DO. I'm having a hard time understanding what devices are which and why. Can someone explain this to me?
What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?
0 Answers Process Control Technologies,
T.x range -0.1 to 0.2 milibar,so how much mili ampear at 0.1 milibar?
can we use a control valve without positioner
how to change measuring units from mmwc to cubm/h in rosemount air flow transmitter with hart communicator fluke 744
What is Erosion in a control valve?
Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer
1. What means HART communicator / where it is used / how to use it? 2. Types of Thermocouples and its temperature ranges / output of thermocouple? 3. Types of RTDs and its temperature ranges / output of RTD? 4. Idea about Temperature Transmitters? 5. Difference between Analog and Digital signals? 6. Difference between “2 wire” and “4 wire” system / instruments? 7. Difference between “Potential” and “Potential free” contact? 8. Types of flow meters / transmitters? 9. Types of level transmitters? 10. Difference between “Power/Control” cable and “Instrument” cable? 11. What means “shield” and “screen” in cables / how it is useful? 12. Draw a schematic of closed loop circuit of flow / level / pressure / temperature? 13. Idea about calibration of Control valve / positioned / I/P? 14. How to bypass a digital/analog signal in PLC/DCS by hardwire and software?
what is proportional & what is proportional band
how many type of control valve?
relation between level and differential pressure.
If we increase D what will be the controller action?
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