Answer / rijo dennis

A Flow transmitter will produce 4-20mA as its output. According to the differential pressure applied to the diaphragm of the D.P it will produce electrical signal. In the cause of the flow the out put current will be in the square root proportional mode, i.e
input= 0% then output= 0% 4.00 mA
input= 25% then output= 50% 12.00 mA
input= 50% then output= 70.71% 15.31 mA
input= 75% then output= 86.60% 17.85 mA
input=100% then output= 100% 20.00 mA

For a level transmitter it will be operated in linear mode,i.e,
input= 0% then output= 0% 4 mA
input= 25% then output= 25% 8 mA
input= 50% then output= 50% 12 mA
input= 75% then output= 75% 16 mA
input=100% then output= 100% 20 mA

The same DP(Differential pressure) Transmitter can also used for both flow and level,but the one and only change in the mode of operation. flow is proportional to the
square root of the DP,but floe is directly proportional.

how to install Differential pressure transmitter in gas line.i need transmitter down side.

7 Answers   Rockwell,

---

what is commissioning & pre commissioning , explain with difination

2 Answers   Bapco Bahrain Petroleum Company, Shell,

---

Any one can help me to identified, how can we interchange the device in FF

0 Answers   Ion Exchange,

---

For 150 mtr cable run from DCS panel to transmitter (24 VDC with 4-20 ma output), need cable size. 1.5 sqmm is suitable?

2 Answers   NA,

---

Furnace draft transmitter range is -50 to +50 mmwc. why the impulse line connected in hp side?

2 Answers   Arena,

---

why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

0 Answers   ONGC,

---

How does pyrometer works?

1 Answers  

---

What is an instrumentation amplifier? How is it better than a differential amplifier when handling outputs from a wheatstone's bridge?

2 Answers   Honeywell,

---

EXPLAIN SOME IMP QUESTIONS AND ANSWERS ON TOPIC ELECTRONICS,INSTRUMENTATION.........

1 Answers   ONGC,

---

What is the difference between DCS and SCADA?

1 Answers  

---

What is the difference between intrinsic instruments and ATEX instruments?

1 Answers  

---

What is the purpose of RS Networks

2 Answers  

---