Interested to Buy Any Domain ? << Click Here >> for more details...
hello.my friends.i am an electronics & instrumentation engineer.i want to know Q1.why lugs use in instrumentation cable termination? Q2.if limit switch not working what to do?
- 2 Answers
- 5980 Views
- I also Faced
- E-Mail Answers
Answer Posted / carl_ellis
Lugs are large terminals, like those used on automotive
batteries. Ferrules are crimped onto stranded wire for
making connections to instrumentation terminal blocks.
Stranded wire is used for instrumentation because it has
superior flexibility, better flex life and higher resistance
to vibration. But there are assertions that stranded wire
loses strength and resiliency when the insulation is
stripped off for connections. The argument is that ferrules
crimped over the bared wire maintain the flexibility,
resiliency, and reduce corrosion.
It is unarguable that ferrules reduce the problem of stray
strands that do not insert properly with the associated risk
of a short to another terminal connection.
I've read reports of spring clamp connections (as opposed to
screw clamp) which have problems with stranded wire without
ferrules. Not all the strands contact the terminal and
separated stray wires can break.
When crimped properly, there is a gas-tight seal between the
ferrule and the wire strands, reducing prospect of corrosion.
Wire ferrules are widely used for European style terminal
blocks (as opposed to washer/screw terminal style) and in
fact, ferrules are required for CE certification.
Carl Ellis
Measure First
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d
What is the use of control cable?
Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.
any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com
Any one can help me to identified, how can we interchange the device in FF
What you mean by multi stage control vavles?
Why we are using reverse action in displacer types level transmitters on some Vessels?
how to calibrate mass flow meter (Coriolis)? Example calibration range: 0 to 2500 kg/hr line size 3" fluid: Etheline glycol (MEG)
why fuse block is not used for AI signal?
How to calculate P,I&D value in PID controller ?
What is the difference between working pressure and calibration pressure of a control valve
If relative y axis vibration sensor is by passed, and relative x axis and absolute sensor is left working. how much monitoring i would have risked?
How do you identify an orifice in the pipeline?
How do you identify between actual alarm and false alarm in a Temperature Transmitter in SCADA based Control System
