When a field input to plc is coming from 400 to 600 meters
and the input is in 24 V DC? So signal cable of which cross
section i should select for proper signal to plc?
- 5 Answers
- 10485 Views
- Exxon Mobil, I also Faced
- E-Mail Answers
Answer Posted / laxit
For this type of circuit, use Relay output instead of
direct driving through the PLC output. As these SOV's are
not the low power wattage, Prefer to use 2.5 Sq.mm as a
general for such digital output.Relay contact shall be
selected accordingly.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure
How to calibration coriolis flow meter?
what is a good line as ic engineer as maintenance ,oc, project, calibration ,validation engineer?
what are procedure of sox-nox calibration
the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)
Basically iam Instruemntation Engineer, but Iam interested in Instruments design engineering, so plz guide, is there any course, training or Softwres to become Instrument design engineer??.
I was working on calibrating turbidity transmitters endress+hauser at effluent polishing plant.We calibrated using NTU buffers.What happened is that when we immersed the sensor, everytime we raise and lower the sensor gradually, the reading will vary.my question is that is there any specifications on what is the required distance from the bottom of the container with buffer to the face of the sensor?Is it ok to install the sensor in a medium which has turbulence specially if bubbles are present?
What are different types of cable?
May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com
Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?
what is the difference between scaler and vector drive
How to do gas analysers calibration in AUTO and Manually by using zero and span gas?
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
sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com
hey any one got the papers of SAIL and HPCL plz do help me by posting them to my mail ID's naren07_87@yaho.co.in, surenarendra@gmail.com
