I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay

3 Answers   Qatar Petroleums, Samsung,

---

1. Pl. send details about different types Gas Analyser, like Co2, O2, SOX/NOX, etc. with calibration procedure. 2. How to calibrate H2S gas detector in field?

1 Answers   HPCL, Napesco,

---

How u measure the massflow in orifice flow measurement techniques

0 Answers   Johnson Matthey,

---

What is the basic difference between Modbus and CAN Open Protocols

0 Answers  

---

hello this is dhinakar subramanian. how to piping and instrumenation drawings and also how to create the data sheets...

1 Answers  

---

Thermocouples work as follow:

1 Answers   Dashen Brewery, Tata Power,

---

what is meant by control valve sizing?

3 Answers  

---

what are the pinciples & units of flow, level, temperature, pressure, quality.

1 Answers  

---

What is possitive and negative feedback?

3 Answers   KNPC,

---

Can we calibrate an actuator?

5 Answers   Siemens,

---

What is the diffrence between ff tx and non ff tx

0 Answers   Jindal, Rosemount,

---

Why we use mmwc unit for pressure

3 Answers  

---