How can one improve linearity of an RTD based temperature
measurement system?

Answer Posted / guest

RTD has +/- 0.4% nonlinearity when used over 0 to 200 degC.
This is due to the relationship R= R0*(1+aT+bT^2). The
change in resistance for 0 to 100 degC is 38.5ohms for a
Pt100, while it is lesser at 37.3 ohms fro 100 to 200 degC.
Using a two slope method, one for 0 to 100 deg and another
for 100 to 200 degC, the linearity error can be brought
down from +/- 4% to +/- 0.1%.

Is This Answer Correct ?    5 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How it the difference between force balance system and dispalacement balance system?

1565


Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection

1560


what is 24vdc live and dry supply

1798


Explain PID, ON/OFF, Controls

1562


how many types of viberation transmitter and how to calibrate and where use of vibration transmitter

1668






what is function of sensor, and how is it work , explain with difination

1869


Q-Explain the different load conditions that will produced different offset which may or may not be acceptable to thhe control function

1715


sir i m preparing for BARC but i am not getting any papers to prepare for this exam so please send me some sample papers to my i.d for the preparation of barc.

1980


few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters

1583


Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?

1747


what is the usage of QDV & VOLUME BOOSTER

1750


how can leve transmetter calibate in feild .and also put cv and flow plz .....

1747


How to calibrate the flow transmitter

1025


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

2459


If i have 4 Allen Bradely make RS logix 5000 PLC and for viewing that we are using 4 RS view SCADA for 4 different packages. Now, I will want to view two packages on only one SCADA. Then how i will do it?

1810