Rockwell Automation 1762-IR4 RTD/Resistance Input Module - Manual (Page 13)

Publication 1762-UM003A-EN-P - February 2003
Overview 1-3
Table 1.1 RTD Specifications
RTD Type
(1) Temperature Range Using
0.5 mA Excitation Temperature Range Using
1.0 mA Excitation Maximum
Scaled
Resolution Maximum
Scaled
Repeatability
Copper 426 10
Ω
Not allowed -100 to 260°C (-148 to 500°F) 0.1°C (0.1°F) ±0.2°C (±0.4°F)
Nickel 618
(2) 120
Ω
-100 to 260°C (-148 to 500°F) -100 to 260°C (-148 to 500°F) 0.1°C (0.1°F) ±0.1°C (±0.2°F)
Nickel 672 120
Ω
-80 to 260°C (-112 to 500°F) -80 to 260°C (-112 to 500°F) 0.1°C (0.1°F) ±0.1°C (±0.2°F)
Nickel-Iron
518 604
Ω
-100 to 200°C (-148 to 392°F) -100 to +200°C (-148 to 392°F) 0.1°C (0.1°F) ±0.1°C (±0.2°F)
Platinum 385 100
Ω
-200 to 850°C (-328 to 1562°F) -200 to 850°C (-328 to 1562°F) 0.1°C (0.1°F) ±0.2°C (±0.4°F)
200
Ω
-200 to 850°C (-328 to 1562°F) -200 to 850°C (-328 to 1562°F) 0.1°C (0.1°F) ±0.2°C (±0.4°F)
500
Ω
-200 to 850°C (-328 to 1562°F) -200 to 850°C (-328 to 1562°F) 0.1 °C (0.1 °F) ±0.2°C (±0.4°F)
1000
Ω
-200 to 850°C (-328 to 1562°F) Not Allowed 0.1°C (0.1°F) ±0.2°C (±0.4°F)
Platinum 3916 100
Ω
-200C to 630°C (-328 to
1166°F) -200 to 630°C (-328 to 1166°F) 0.1°C (0.1°F) ±0.2°C (±0.4°F)
200
Ω
-200 to 630°C (-328 to 1166°F) -200 to 630°C (-328 to 1166°F) 0.1°C (0.1°F) ±0.2°C (±0.4°F)
500
Ω
-200 to 630°C (-328 to 1166°F) -200 to 630°C (-328 to 1166°F) 0.1°C (0.1°F) ±0.2°C (±0.4°F)
1000
Ω
-200 to 630°C (-328 to 1166°F) Not Allowed 0.1°C (0.1°F) ±0.2°C (±0.4°F)
(1) Digits following the RTD type represent the temperature coefficient of resistance ( α) , which is defined as the resistance change per ohm per °C. For instance,
platinum 385 refers to a platinum RTD with
α
= 0.00385 ohm/ohm -°C, or simply 0.00385/°C.
(2) Actual value at 0°C is 100
Ω
per DIN standard.