Answer Posted / guest

LVDT has an ac excitation. the outputs of secondaries are
added in opposition, and indictaes the deviation in
position of the core from the null position. For detrmining
direction of movement, the excitation voltage of primary is
used as reference, and the phase of the (summed) secondary
is identifed using a phase sensitive detector. This is a
synchronous switch operated with primary excitation, and
rectfies the secondary output is such a way as to produce
positive voltages in one direction (of movement of core)
and negative voltage in the other direction.

when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

2228

---

how to work static pressure sensore how to work dpt

1930

---

Reason for capillary type dp level transmitter fluctuation

2026

---

applications of plc in printing and packaging?

2265

---

Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.

2163

---

what is intrinscily safe system and where we use?

2588

---

where i can get training in INTOOLS and PDMS in Delhi-NCR OR north part of India. please reply with ur ans. at arunsamkaria@ymail.com

3588

---

What is instrumentation instrumentation engineering?

1165

---

why we are not using the turbine flow meter in the steam service?

2256

---

how to commission furnace ( water heater)

2099

---

Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

2167

---

How would you choose differential range?

1222

---

why we are using drum level control valve air to close?

2146

---

Explain an adaptive / self-tuning controller’s major draw card.

2384

---

which type of filter gives the constant phase characteristics?

1964

---