how checking is done in fiber optic cable?
explain the working of RTU?
Answer Posted / abdus sattar mollah
by instrument name OTDR: Optical Time Domain Reflexometer.
It injects laser beam into optical fiber through patch cord
and provides a graph between attenuation (dB) and Distance
(m).{performance decresess for shorter distance)
The graph's nature shows the cable performances.The graphs
has rising peaks followed by decaying lines.Spikes in the
decaying lines indicates severe loss.So,if we have smooth
decaying graph then it reflects good optical fiber
path.Whereas Spikes in curve indicates energy loss which
can be corrected by maintenence of Media Converter(OFC)
converter.Also the splice joings of fiber should not exceed
a maximum 0f 0.1 dB (calculated by Arc splicer Instruments).
Thats is how i have worked for communicating RTU panels
with SCADA server at Mangal PAndey Water Treatment
Plant,Barrackpore,West Bengal
Is This Answer Correct ? | 24 Yes | 2 No |
Post New Answer View All Answers
What are the uses of orifice plates?
Where is wet leg is used?
what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.
what are the values of fuel flow rate in various places in boiler.
wich is coming the first HAZOP OR SIL
How we calculate orifice plat size???
Draw a great bridge circuit.
Regarding , there is an air cooler which control the fans(50% of AV FANS) by temperature in outlet , and the louver of Air cooler is controlled by HIC from control system , So if on Air cooler we will consider 2 individual I/P converter or positioner?
how radio frequency level probes works with its controller ? what is its principle ? pls give me brief explanation?
what is 24vdc live and dry supply
Calibration procedure for water rotameters
Question on maha cement
Full form of KKS when use DCS.
whatis range of marcury filled tempereture gague
What is the minimum rating availalbe for weld neck orifice in market?