Answer / simi susan john

Double acting position er send and exhaust the air at one side of the actuator to position the valve.
Single acting positioner send and exhaust the air at both the sides.

what is the safety integrity levels (SIL)

1 Answers  

---

if we have 450 mm heigth boiler drum level ,so what is span & zero value for a dpt tranmitter

4 Answers  

---

why vortex flow meters and electro magnet flow meters are used in water treatment plants

1 Answers   Elite Construction,

---

how to calculate the total flow in square root

0 Answers   PTI, Qatar Kentz,

---

is here anybody who knows how to calibrate the pressure transmitter? ONLINE

5 Answers  

---

I am having a Phoenix digital to modbus converter. The o/p of the same is connected to flow computer FB407. But the digital signals are updated only after one minute in the flow computer. what may be the cause of delay in communication? Flow computer is having a scanning period of less than 1 sec.

0 Answers  

---

Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.

1 Answers  

---

What's the difference between cold loop test and hot loop test?

5 Answers  

---

what do you mean by smart instruments?explain with example

4 Answers  

---

Meaning of the following a. IOP- Manimum; b. IOP- Maximu,;

0 Answers  

---

What are the two program execution modes of PLC?

4 Answers  

---

the output of the common trasmitter protocol in qatar gas are the following

0 Answers  

---