Answer / richard marks

ph meters are calibrated using buffer solutins which are at
known ph levels. Make sure the probe is cleaned before
imerging it in the solutions.

Answer / satish

YOU CAN CALIBRATE IN THREE PHASE 4/7/9 PH BUFFER SOLUTION
NORMALLY WE ARE CALIBRATING WITH 4 & 9 PH BUFFER THAT MEAN
4PH--4MA/9PH--20

Answer / subhash

the Ph calibration is done by using the buffer solutions
,with the one probe i,e the reference electrode and the
measurement electrode ,,,,,,,,,,,,,

what is PID n give me brief info. about P&I&D.

2 Answers  

---

temptrure me ketne frequiency hote hai

0 Answers   ME,

---

flow transmitter formula?

0 Answers   BEMCO, Siemens, Yokogawa,

---

what is the meaning of Domain server?

2 Answers  

---

define feed forward control loop with example and drawing?

0 Answers   Honeywell,

---

---

What is the differaence between PLC and DCS?

6 Answers  

---

What are different type of instrument cable

0 Answers   KOC,

---

pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.

3 Answers  

---

Why thermo wells are used? What materials are used in thermo wells?

0 Answers  

---

What is the diffirence between Earth and Neutral and What is the required normal voltage between earth and neutral

6 Answers  

---

What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem? 

0 Answers   Process Control Technologies,

---

What is intrinsically safe system?

0 Answers  

---