Answer / carl_ellis

I assume "MURCREY" is mercury, the chemical with the symbol Hg.

On-Off temperature thermostat controllers have used a
mercury filled switch for control output.

Mercury filled thermometers have been around for centuries.

But I am unaware of a temperature transmitter filled with
mercury. 2 wire, loop powered industrial temperature
transmitters with a thermocouple input have been available
for decades.

Configuration of the temperature scale corresponding to the
4-20mA output range and sensor type depends on the make and
model of the temperature transmitter. Different methods are
configuration
- with a HART communicator
- with pushbuttons and a local display
- with a software program and serial communications cable
and modem (RS-232 or USB)
- factory configuration

Calibration generally consists of trimming the 4.0 and
20.0mA levels by the same means as configuration, above.

If we increase only P what will be controller action ?

0 Answers   IMECO,

---

Introduce yourself which is not present in your biodata?

0 Answers   GAIL,

---

Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.

0 Answers  

---

What is the reason PT speed not incresed in gas turbine?

0 Answers   ROC,

---

what is the calibration standard for pressure and differential pressure transmitters?

1 Answers   Thermax,

---

---

What is the difference between Pressure Safety Valve and Pressure Relieve Valve, in what condition we prefer choose Pressure Safety Valve rather than Pressure Relieve Valve? and vice versa

2 Answers   Vedanta,

---

For a diafhram 1.5 d =kn(p-p0) D4 Where d in deflection in inch k=constant n=no of capdule (P-P0)=Applied pressure in psi D In active dia at capsule. -1.5 d=k to p d being constant -1.5

0 Answers   L&T, Shiv Tech Marine Control,

---

what is proportional & what is proportional band

1 Answers   Nimir,

---

what is diffrence between analog card and digital card in plc.how analog card work,Please explain in detail.Please send it on abhi_vyas@sify.com

6 Answers  

---

explain the working of Coriolis Flowmeter.

2 Answers   ABB,

---

WHICH INSTRUMENT USED TO CALIBRATE CONTROL VALVE?

23 Answers   Exxon Mobil, Honeywell,

---

I want to apply for the universities in US,but i got the GRE score of (650+300=950)TOEFL 69/120.Is this score sufficient for applying universities please i am married i need to go to US because my husband didn't get H1 yet.please send me suggestion

0 Answers  

---