iProcesSmart.com distributor of high quality Industrial Process Equipment INDUSTRIAL PROCESS INSTRUMENTS AND CONTROLS
Tel: 1-925-706-7433
Fax: 1-925-706-2583

RTD Tolerances, Classes and Comparisons


Platinum RTD Tolerance Values

       
Temperature ºC

Resistance Value

Tolerance DIN-IEC-761

Industrial Tolerance Class C
ºC ()

Class A
ºC()
Class B
ºC()
-200
-100
0
100
200
18.49
60.25
100.00
138.50
175.84
±0.55-(±0.24)
±0.35-(±0.14)
±0.15-(±0.06)
±0.35-(±0.13)
±0.55-(±0.20)
±1.3-(±0.56)
±0.8-(±0.32)
±0.3-(±0.12)
±0.8-(±0.30)
±1.3-(±0.48)
±2.27
±1.77
±1.27
±1.77
±2.27
(±1.15)
(±0.71)
(±0.50)
(±0.67)
(±0.83)
300
400
500
600
650
212.02
247.04
280.90
313.59
329.51
±0.75-(±0.27)
±0.95-(±0.33)
±1.15-(±0.38)
±1.35-(±0.43)
±1.45-(±0.46)
±1.8-(±0.64)
±2.3-(±0.79)
±2.8-(±0.93)
±3.3-(±1.06)
±3.6-(±1.13)
±2.77
±3.27
±3.77
±4.27
±4.52
(±0.98)
(±1.10)
(±1.22)
(±1.32)
(±1.36)


RTD Tolerance Class Definitions

DIN class A: ±(0.15 + 0.002 |t|ºC Where t is the actual temperature, in ºC, of the platinum elements.
DIN class B: ±(0.30 + 0.005 |t|ºC
DIN class C: ±(1.27 + 0.005 |t|ºC

RTD Resistance Wire Comparisons

Element
Metal
Temperature Range Benefits Base Resistance TCR (//ºC)
Platinum

-436 to 1562ºF
(-260 to 850ºC)
Best stability,
Good linearity
100 at 0ºC

0.00385 (DIN-IEC-761),
0.003916 (JIS 1604-1981)
Copper

-148 to 500ºF
(-100 to 260ºC)
Best linearity

10 at 25ºC

0.00427

Nickel

-148 to 500ºF
(-100 to 260ºC)
Low cost,
High Sensitivity
120 at 0º C

0.00672


PDF File RTD Information


Home
Request Quote

Go Shopping
Search Products
Basket Contents
Track Order

Company Information
Terms & Conditions
Your Privacy
Manufacturers
Contact Us!

Technical Library
Chemical Compatibility
Cleanroom Standards
Light Color Codes
Conversion Charts
Electrical Safety
Electrical Symbols
FCC Rules
Heater Selection
Humidity
Motors Gears, Drives
Ohm's Law
Particle Contamination
Power Equations
Pressure Help
Quick Formulas
Research Links
Temperature Conv
t/c  Reference
RTD Reference
Time Standards
3-Phase Equations
LonWorks
Carbon Dioxide

 

 

SEARCH  INVENTORY