Answer / nitish joshi

because magnetic flowmeter works in conductive liquid.
in power plant we use non conductive water.

Answer / rajesh

Generally we use to measure the feed water ,Steam ,FD Air,Make up water and re circulation cooling water in the power plants apart from the re circulation cooling water all are non conductive liquids and gasses so we could not use magnetic flow meter. We can use it in cooling water re circulation line of cooling tower but it is quite expensive than Annubar flow meter.

Can we measure pressure using differential pressure transmitter? If yes then how?

5 Answers   Reliance,

---

When a timer is placed in RS Logix 5000 with preset value less than its scan time it is malfunctioning. i.e., if the preset is set to 30ms still the timer TT bit is counting till 150ms(its scan time). Any solution for the problem?

2 Answers   Balco,

---

i am confusing about differential pressure transmitter as i seen so many DPTs in different ranges how can we calculate level and flow with mmh20 plz tel me

1 Answers  

---

What should be the ideal tapping location for pressure differential transmitter for liquid service. If the tapping taken from the top of the pipe then PDIT will work properly or not. If PDIT do not work properly then what minimum corrective action should be taken in order to solve wrong tapping locations.

1 Answers  

---

what is the way of measuring air flow in air duct?explaim instruments used and DP creation in line?

3 Answers  

---

whats the abbreviation of IOP? is it instrument of power or input open problem?

0 Answers  

---

what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?

0 Answers   NTPC, PSU,

---

why we are using MARSHALLING PANEL? what is the role?

5 Answers  

---

what is pico fuse? how this different rom othe fuses and how to locate it inside the card?

1 Answers  

---

We do have a problem in the company that is one PT connected to PlC which is mean 1 out of 1 in PLC system we do have the PAHH is 55 mbar and PALL 8 mbar with a timer of 15 sec for the PAHH the problem started when PAHH goes more than the set point which is 55 it reached up to 71 but due to timer doesn't trip . We force it and we checked everything nothing there . We replaced the transmitter problem still there the reading goes more than the 55 bar the range for transmitte is 0- 60 mbar . So we did loop check , aculaizing valve , wiring all are okay . What the possible causes for this ???

2 Answers   National Petrochemical Company,

---

how to calibrate bubbler type level transmitter of rosemount make and how to set air flow according to the range.. give one calibration procedure with one example

1 Answers  

---

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,

---