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.

how to make a calliberation for deffirential pressure

3 Answers  

---

What is ALSPA 370 control system

1 Answers   DUBAL-Dubai Aluminium,

---

What is difference between radial vibration and axial vibration explain in detail .

0 Answers   Emerson,

---

Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.

0 Answers  

---

why we use 24v dc in instrument rahter than 230vac????

4 Answers  

---

---

what is function of ESD , and how is it work, explain with difination

1 Answers   Bapco Bahrain Petroleum Company, BMB,

---

canu tell me why 4-20 ma and why not this 3-25ma?please give reason of this value.

6 Answers  

---

In 2 wire transmitter 1 wire is used for power and other is used for signal( 4-20)ma In 4 wire transmitter 2 wires are used for power and 2 wires are used for signal (4-20)ma . but my question is "what is the criteria or parameters we have to consider while selecting these transmitters for eg( distance, safety zones etc.

1 Answers  

---

Which softwere is required to communicate the S7-300 processor

4 Answers  

---

If i want use the 6 kg/cm2 pressure gauge then how to calculate its pressure gauge range?

1 Answers  

---

Which type of diagphram use in costic line,DM water line,natural gas line,oil line?

0 Answers   Hindustan Zinc,

---

what is beta ratio?

3 Answers  

---