Answer Posted / narendra mishra

Yes u can do zero trimming. You might be familiar with zero and span.zero trimming means setting zero(lower range value) for transmitter. U will get -5kpa reading in transmitter.

Difference between dcs and plc including date processing and architecture.

1142

---

can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know

2125

---

how to calibrate mass flow meter (Coriolis)? Example calibration range: 0 to 2500 kg/hr line size 3" fluid: Etheline glycol (MEG)

2685

---

while i check zero check for dp flow transmitter some fluctuating came (0 to 458 kg/h) what is the reason?

1902

---

why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

2737

---

What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus

5865

---

what is the reason while warning lamp is on while the engine is cranking?

2151

---

What is the minimum rating availalbe for weld neck orifice in market?

1983

---

What is the diffrence between digital signal processing and discrete signal processing?

1988

---

Explain about safety integrated level protection? . How it was differ from other protections ?

1746

---

I want to know about DDCMIS in detail ? please explain it. Also give name of reference books in which it is explained in detail in very simple manner.

3831

---

how can we tune a PID. If it is by zeiger nichols method..please explain briefly with help of an example.

2481

---

List three types Level Switches with their working principles

2135

---

i am from instrument branch i want paper patern of mahagenco . any pevious years paper regarding my branch send me please . please.....

2100

---

Explain the difference between plc and cnc?

1073

---