Answer / ilaiyaraja

mainly direction of flow and Size of bore in mm

Answer / dlp

medium in which it is to be used

Answer / ashish mahadik

1.Which is the inlet side.
2.Material of construction
3.bore size in mm

Answer / malik

its dia in mm..........

How EMF is generated in Thermocouple

3 Answers  

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what is the function of boiler in plant?

2 Answers   Maden,

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In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

6 Answers   L&T,

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

0 Answers  

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What is seeback effect?

3 Answers  

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what is bevel? why bevel required in orifice plate?

2 Answers  

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Can all intrinsic safe transmitters are provided with inbuilt zener barriers? why

2 Answers  

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why we us isolation barrier in hazardous area how it works to protect the area and please clarify its current flow.

0 Answers  

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Why we use negetive (-)voltage in vibration system

4 Answers  

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Instrument QA/Qc what is the project quality plan?conduit inspection RFI. which documents attache with package?

0 Answers  

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how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.

0 Answers  

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how is a displacer type level transmitter calibrated.explain the method?

2 Answers   Emirates,

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