WHY TEMPERATURE TRANSMITTER USED AS WE CAN CONTROL THROUGH THERMOCOUPLE/RTD

Answer Posted / george mathews

Neither temperature transmitter not the thermocouple or Rtd
can control the process. Because as we know Thermocouple and
RTD are nothing but measuring medium , their only work is to
measure the temperature , and for the transmitter it nothing
but a transducer whose only work is to send the measurement
in d form of mA (4 to 20 mA.)

Is This Answer Correct ?    4 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Exothermic reaction./ endothermic reaction

1526


1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling

1950


what is the criteria to decide conductor size of a cable ?

1280


What are the different types of thermistors used in industries? How to the operation of typical thermistor?

1316


Which is the best field foundation bus. ( FF ) Yokogawa, Honeywell or others ?

1343






typical loop drawing of a simple feedback control comprising of one transmitter and one control

1560


What are different types of orifice plates? State their uses.

628


What is the use of GMV in turbine?

3714


Speedtronic system .

1529


Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?

1306


why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?

1579


Why humidity limit is 30 to 55 % for raw material storage?

3605


What is the cascade control

985


Isometric drawings are generated during _________________ phase of a project

1611


what is the field bus calble ? what are diffrences in orang colur cable and black coular calble ?

2474