Interested to Buy Any Domain ? << Click Here >> for more details...
Why we use negetive (-)voltage in vibration system
- 4 Answers
- 11883 Views
- I also Faced
- E-Mail Answers
Answer Posted / waleedmahmoud
The basic reason is that the power supply is -24 VDC. So
since the supply voltage is negative the output voltage
will be as well.
IRD at one time made prox probes with a positive supply and
as a result a positive output.
Way back in the 50's uncle Don Bently made a design
decision to use a negative supply voltage (back then it
was -18 VDC rather than -24 VDc in the modern device) in
his circuit. This decision has stuck and is now even
included in the API standards
Positive are also there for example.
Metrix 5465F is -ve gap voltage
Metrix 5465E is +ve gap volatge
It does not make much of a difference wether you use
positive or negetive voltages. It is -ve because Bently
started with the design of -ve and now we stick to -ve.
| Is This Answer Correct ? | 4 Yes | 5 No |
Post New Answer View All Answers
what is orfics working in main steam line. is it increase pressure, velocity of steam flow and dicrease steam flow rate. or any other
field bus transmitter calibration procedure tell me
why fuse block is not used for AI signal?
whatis range of marcury filled tempereture gague
With N nodes and B branches what will have a network ???
Good evening all I need a small favour regarding reliance paper i wanna probable sample papers(e&i) of reliance. if any of u have any idea about dis then plz mail me back.i belongs to electronics and instrumentation engg.so i need e&i papers. thanking u....
can u plz send me technical questions asked in SCHNEIDER ELECTRICAL technical paper?
Instrumentation symbols interpration, P& ID, Logic diagram analysis, Electrical drawing analysis.
what is a good line as ic engineer as maintenance ,oc, project, calibration ,validation engineer?
what is the input to be given in digital flow meter during the the calibration time?
NSV type probe stands for
Describe how to use megger to measure the earth resistance and insulation resistance
Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...
i am from instrument branch i want paper patern of mahagenco . any pevious years paper regarding my branch send me please . please.....
Why do you want to work here
