Answer / mohamed yousuf

i will give u an example how to calibrate the pressure
transmitter,if u calibrate the pressure transmitter in the
range of 4 to 50psi, by using the hart callibrator we can
clibrate it

step1:apply the preesure of 4psi and adjust the transmitter
to 4ma
step2:apply the pressur of 50psi and adjust the transmitter
exactly to 20ma this is called span setting

how in the 2 - wire transmitter, 24v supply and the 4ma signal gets in the same path?

1 Answers   Yokogawa,

---

why we use npn sensor in vibration monitoring system

1 Answers  

---

Can you tell me how we will select RTD and Thermocouples for Temperature applications. I.e How we will choose accurate one for a specefic operation if both having same ranges

3 Answers   Nippon,

---

How does a single acting, spring return ball valve actually work? Does it require continuous air supply? 

0 Answers   Process Control Technologies,

---

Define magnetic flow meter and mass flow meter.

1 Answers   Ramco,

---

---

Define all the process Variable and state their unit of measurement. ?

0 Answers  

---

Why the industry's standard current standards are from 4mA to 20mA,not from 0mA or any other range?

3 Answers  

---

which gas or which liquid is filled in capillary of dial type temperature indicators on power transformers

2 Answers  

---

what is the operation philosophy of proximity velocity sensor

1 Answers  

---

How to Calibrate Level Troll in field

0 Answers  

---

what do you know about Foundation Fieldbus?

1 Answers   CCIE,

---

what is cascade system ?

1 Answers   RSP, Thermax,

---