Answer / nikunj

Cryogenic means to work in lower temperature range (-50 and
below than that).

Nikunj

Answer / afsar mumtaz

very low temperature like liquid nitrogen and liquid helium
:-156 to -2560 degree.

Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

0 Answers  

---

How to Calibrate Ultrasonic flow Transmitter in Field

0 Answers  

---

what is the diffrence between mmwc and kg/cm2 for pressure measurment when we are using mmwc and when kg/cm2 and why????? ?? what is the reason

19 Answers   Ecoboard, Jindal, Sepco,

---

can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.

0 Answers  

---

can we connect instrument earth pit to electrical earth pit, if not why?

2 Answers  

---

how will you segregate the alarm levels in alarm management system during factory Acceptance Test

0 Answers  

---

What is expansion of SMART Instruments? And What is it?

35 Answers   Atesco,

---

what is formula for calculating flow if i have pressure and pipe diameter?

1 Answers  

---

field bus transmitter calibration procedure tell me

0 Answers   BAP,

---

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 Answers  

---

tell me the field & lab calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter, temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue),

0 Answers  

---

can u plz send me technical questions asked in SCHNEIDER ELECTRICAL technical paper?

0 Answers   TCS,

---