Answer / jigaranadkat

HART : Highway Addressable Remote Transducer

This is a communication protocol in which all information related to transmitter / instrument travels in the same pair of power loop of transmitter.

This information is transmitted by superimposing HART signal (AC) on 4-20mA DC signal. Hence HART DC value remains zero and it will not impact 4-20mA measurement.

The digital HART information is transmitted by two different signal 1200 Hz (Represented as 1) and 2200 Hz(Represents 0) in digital system.

Since transmitter are Highway Addressable, it is possible to configure transmitter remotely through a management system (e.g. AMS or PRM).

Hope this will help.

Regards,
Jigar Anadkat

Answer / mohamedhega

Hart stands for Highway addressable remote transmitter.
signals are in form of mA (4-20) current loop
so that it is not effected by wire resistance.
but it is slow with respect to other types like fieldbus ff ,profibus and modbus.

Answer / jigaranadkat

HART : Highway Addressable Remote Transducer

This is a communication protocol in which all information related to transmitter / instrument travels in the same pair of power loop of transmitter.

This information is transmitted by superimposing HART signal (AC) on 4-20mA DC signal. Hence HART DC value remains zero and it will not impact 4-20mA measurement.

The digital HART information is transmitted by two different signal 1200 Hz (Represented as 1) and 2200 Hz(Represents 0) in digital system.

Since transmitter are Highway Addressable, it is possible to configure transmitter remotely through a management system (e.g. AMS or PRM).

Hope this will help

Regards,
Jigar Anadkat

Answer / jigaranadkat

What Do you understand by HART protocol :

HART : Highway Addressable Remote Transducer

This is a communication protocol in which all information related to transmitter / instrument travels in the same pair of power loop of transmitter.

This information is transmitted by superimposing HART signal (AC) on 4-20mA DC signal. Hence HART DC value remains zero and it will not impact 4-20mA measurement.

The digital HART information is transmitted by two different signal 1200 Hz (Represented as 1) and 2200 Hz(Represents 0) in digital system.

Since transmitter are Highway Addressable, it is possible to configure transmitter remotely through a management system (e.g. AMS or PRM).

Hope this will help.

Regards,
Jigar Anadkat

if differential pressure created by orifice falls below vapour pressure of liquid flowing through it what will happen

1 Answers   BARC,

---

What is difference between reset and initialization in system.

1 Answers   Marafiq,

---

How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error

2 Answers  

---

what is plc? Basic function of plc? application of plc in industry? What is lader diagram ? What is the main advantage to use plc in industry?

15 Answers   Schlumberger,

---

HOW DPT WORKS?

6 Answers   Essar,

---

How can you convert an SR Flip-flop to a JK Flip-flop?

1 Answers  

---

what is the process for double acting cylinder pneumatic for 32' v/v

0 Answers  

---

what is axial shift n what is differential expansion in turbine? how many sensor probes r mounted for this n how it works?

2 Answers   Apple,

---

What is the purpose of the analyzer in petrochemical plant?

0 Answers   ENI, Lakshmi Machine Works,

---

what is thermo coupler and how it works

2 Answers   Tisco,

---

How to check loadcell working or notworking

2 Answers  

---

Explain PID, ON/OFF, Controls

0 Answers   CCIE, Gulf Engineering,

---