in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

1 Answers   Sirpur Paper Mill,

---

How to interfacing microcontroller with a DC motor

0 Answers   JJ Tech,

---

Why 1-5 vdc a standard?

1 Answers   Process Control Technologies,

---

Is there devices to convert mechanical energy/rotational energy into electrical energy.......? PLease suggest me....

6 Answers  

---

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

0 Answers  

---

---

please can anyone tell me in detail, what's mean by open loop and close loop?

6 Answers  

---

instrumentation

1 Answers   Tata Steel Limited,

---

how many types of preheaters are in cement industry & what r they can any body explain?

0 Answers  

---

what is commisioning procedure,2)what is is the main work in commisioning in the field tx to dcs, plz send me detail

0 Answers  

---

if my flow is 20000 m3/h than which range of DPT i have to use????

0 Answers  

---

in pressure gauge inside why we are using the glasarin oil?

4 Answers  

---

Square root calculation for dp flow transmitter?

0 Answers  

---