Answer / nikhil patil

While transmitting the signal the concept of active and
live zero is used.Generally 1V to 5V is standerd signal
range.voltmeter will read 1v when input to the system is
minimum (active zero)and voltmeter will read 0V when wire
is disconnected.Hence troubleshouting becomes easy.

Answer / ravi gandhi

As per my thought ,

1 > Sensor is there in feild , that will give Temp reading
in Volt / Resistance that will fetch by TT (Temp
Transmitter)when the wire is disconnected & Volt meter is
showing 0 Volts that means two leads of wire may be
shorted .Even o\p of TT is 4-20 mA Voltmeter reading will O
Volts inplace of 1-5 Volts .

TS --- >> TT ----- > Voltmeter(Connected perellel)

how to work static pressure sensore how to work dpt

0 Answers  

---

Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

0 Answers  

---

How can I make calculation for Install level transmitter (DP) for open tank and cloes tank?

1 Answers   Petrofac,

---

What is the maximum distance limit of 4-20mA and 0-10V DC standard signal transmission ?

3 Answers   BARC, ME,

---

basic connection and principle of axial shift sensor n differential sensors in tubine describes n draw......

0 Answers  

---

---

what is the working principle of dis-placer type level transmitter

1 Answers   Sendan,

---

What is the difference between HMI and SCADA and MMI

4 Answers  

---

why we us isolation barrier in hazardous area how it works to protect the area and please clarify its current flow.

0 Answers  

---

if I did short to both AO connections, channel will burn or what? m sure in AI it will damage to channel. But what will happens in AO?

1 Answers  

---

WHAT IS DIFFERANCE BETWEEN INSTRUMENT AND EQUIPMENT

1 Answers   Lupin,

---

How will you calibrate an interface level trol/normal level trol in line and in w/s?

1 Answers   CCIE,

---

how to calculate control valve bonnet size?? or how to select its material?

0 Answers   Jacobs,

---