Answer Posted / carl_ellis

The DP pressure/flow transmitter is mounted above the pipe
for gas applications (empty impulse tubing).

The DP pressure/flow transmitter is mounted below the pipe
for liquid applications (liquid filled impulse tubing)

Steam flow applications using DP pressure transmitters were
historically mounted below-the-pipe (water filled impulse
tubing, frequently with condensate/seal pots), until
Emerson/Rosemount recently discovered that within certain
temperature limits, a DP transmitter close coupled on a
coplanar manifold to an Annubar averaging pitot tube can
survive steam temperatures mounted above-the-pipe.

See this link for Emerson's white paper on steam service
installation recommendations:
http://www2.emersonprocess.com/siteadmincenter/PM%
20Rosemount%20Documents/00870-0200-4809.pdf

Carl Ellis
Measure First

How to calculate P,I&D value in PID controller ?

2206

---

draw the block diagram of a level transmitter ?

2437

---

Please any one can provide latest aptitude test,technical test and interview questions for tata consulting engineering (TCE) i need it asap thanks in advance

2075

---

what is IEC code in cables & how to selecting cables?

1894

---

Calibration procedure for Electro magnetic Flow meter

4539

---

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?

2254

---

POSSITIVE PULSE IS APPLIED TO AN INVERTER INPUT.THE TIME FROM THE LEADING EDGE OF THE INPUT TO THE LEADING EDGE OF THE OUTPUT IS 10 ns. THE TIME FROM THE TRAILING EDGE OF THE INPUT TO THE TRYLING EDGE OF THE OUTPUT IS 8 ns. WHAT ARE THE VALUES OF tPLH and tPHL?

2336

---

sir i m preparing for BARC but i am not getting any papers to prepare for this exam so please send me some sample papers to my i.d for the preparation of barc.

2506

---

What are the interlocks we have to check during the start up of LP/HP compressor?

2042

---

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

4715

---

can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know

2170

---

when placing a vent or drain hole on an orifice plate should you measure from the center of the bore up or down for the vent placement?

1816

---

If P will increase then what will happen with PID?

6142

---

what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?

2169

---

I WANT SECURITY PAPER MILL, HOSHANGABAD TEST PAPER.KINDLY SEND TO MY MAIL ID

2828

---