Answer / omak

By using orifice plate we can measure the differential pressure between the upstream and downstream. This diffferential pressure is proportional to the sqaure of the flow.ie Q2 = DP
(or) Q= sq. root of DP. So by using square root extractor we can get the volumetric flow.

Why DP transmitters are subjected to high static pressure test of 100 bar. Though they will be used for very small pressure range

4 Answers   HPCL,

---

I want to measure bidirectional steam flow? Kindly suggest me a suitable flow meter. steam is superheated at 41kg/cm2, 350°C

2 Answers  

---

what is the input of digital RPM indicator during the calibration time?

1 Answers  

---

WHEN BOTH WIRES OF THERMOCOUPLE R SHORTED WHAT IS THE OUTPUT THE TEMP ARE 0,30,250,320

13 Answers  

---

1. How many output signals do wew have in process control? 2. Could you write down the names of the pre-commissioning and commissioning stage test instruments and explain them (more than 5 items)? 3. What is the first step to commission a transmitter on service? 4. What is RTD? 5. Find the output value in MA of a temperature transmitter (RTD Type) at 120degree celius? 6. What is the O/P signal of a pneumatic transmitter? 7. What is the O/P signal of an elctronic transmitter? 8. What is the close loop and open loon?

4 Answers  

---

line up procedure for dp type flow transmitter?

0 Answers  

---

Hi at present i m wrking with tire industry as a manager having gud ctc. Nw I am selected for 1 of the best chemical industry but my ctc is lower than current n also i hv 2 compromize vit post as post is also lower. I hv 6 yrs of exp in various type of industry. Should i join chemical industry as there ar lot of gud instrument than tire? Financialy i can manage 4 more 2 yrs. Bt during wrking vit tire industry i found there is very less instrument n feel that opportunity is less. Pl ans quickly. I have less time to decide.

1 Answers  

---

What is instrumentation measurement?

0 Answers  

---

what is the difference between single and double compression cable gland

3 Answers   Petrofac,

---

what is Green field /brown field exposure in chemicals /oil /petrochemicals /refineries /paints /speciality chemicals /gas /FMCG /glass industry

1 Answers  

---

hiii.... can any one provide me previous years question paper of hindustan petroleum for instrumentation engineering???

0 Answers  

---

how to calculate MMWC values in to Tonns(MMWC values showing in DP transmitter and Tonns value showing in Totalizer). please tell me details?

2 Answers   Chemin C I, MSP,

---