Answer / ashish tiwary

The selection of a PNP sensor verses an NPN sensor is determined by the nature of the circuit the device is to be used in. When used in a traditional relay type control circuit, it is normally possible to use either the PNP or the NPN type of sensor as shown below. PNP sensors tend to be more commonly used.

what is meant by nuclear power plant?

1 Answers  

---

in a power plant which system are compensated?

2 Answers  

---

What is intrinsic safety mean.

0 Answers   CCIE,

---

what is mass flow meter principal?

4 Answers   GIL,

---

what is stroke check for field instument transmetter's & AOV's

0 Answers  

---

---

what will be the output of a temperature transmitter if temperature is 120 degree celcius?

6 Answers   KNPC,

---

How to control flow variations in magnetic flow maters..... When i will provide proper earthing?

0 Answers   ABB, L&T,

---

Explain Difference between Bech set and operating range of control valve

3 Answers  

---

tell me about the instrumentation,what is the actual need of it ?what are the characteristics of a IC engineer ?

11 Answers   L&T,

---

we are having yokogawa centum cs3000 dcs in our power plant. i need some of the operator guides NOT to appear in HIS0163 AND HIS 0162 but it shoul appear in HIS0164 HOW TO DO IT?

0 Answers   Yokogawa,

---

How it the difference between force balance system and dispalacement balance system?

0 Answers  

---

difference between plc and dcs?

3 Answers   Honeywell,

---