Answer / ashish b. patel

when you are open the positioner there are two setting, zero & span. positioner to give 4 mA and set the Zero adjust and valve should be 0% open. after give 20 mA and set to span and valve should be 100% open. this to adjust are very important. after you can give again 4 mA- 0%, 8 mA- 25%, 12 mA- 50%, 16 mA- 75%, 20 mA-100%.

What is passive connection of instrument in different types of IO module?

2 Answers  

---

Please explain the difference between instrument range and calibration range in terms of pressure transmitter? line design pressure: 93 bar operating pressure : 82 bar press Transmitter Range? calibration range ?

3 Answers   L&T,

---

Why ues 250 ohms Resistor during hart type instruments calibration with hart protocol in details ?

5 Answers  

---

what pressure transmitter?

8 Answers   Bhel,

---

what is difference between accelerometer vibration sensor and proximity vibration sensor

3 Answers  

---

How to convert mA into Percentage?

4 Answers   KNPC,

---

An electronic p controller has an input range of 1-5v, and output range of 4-20mA, while testing a step change of 0.4 was applied at the input , the PB setting was 50% ,what should be the change in the output ?

1 Answers   Reliance,

---

What is the Temperature Co-officient of Resistance of PT- 1000 and PT-2000 ?

2 Answers   Adani, Birla, MEIL,

---

Can all intrinsic safe transmitters are provided with inbuilt zener barriers? why

2 Answers  

---

What is the difference between a Extension cable and a copnesating cable.Where can we use compensating cable. Is anywhere compensating cable are used for mv transmission to the indicator.

1 Answers  

---

What is the differace between Volumatric flow meter and Mass flow meter.

4 Answers   Reliance,

---

where using the 0-20ma in feiled instrumentation? why its using?

4 Answers  

---