Allen-Bradley SLC 500 - Page 21

SLC 500™ RTD/Resistance Input Module 21
Publication 1746-IN012B-EN-P - May 2001
RTD Temperature Ranges, Resolution, and Repeatability
RTD Type Temp. Range
(0.5 mA Excitation)
(4)
(4) The temperature range for the 1000Ω RTD is dependent on the excitation current.
Temp. Range
(2.0 mA Excitation)
Resolution Repeatability
Platinum
(385)
(1)
(1) The 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 ohms/ohm - °C or simply
0.00385/°C.
100Ω -200 °C to +850 °C
(-328 °F to +1562 °F)
-200 °C to +850 °C
(-328 °F to +1562 °F)
0.1 °C
(0.2 °F)
±0.2 °C
(± 0.4 °F)
200
Ω -200 °C to +850 °C
(-328 °F to +1562 °F)
-200 °C to +850 °C
(-328 °F to +1562 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
500
Ω -200 °C to +850 °C
(-328 °F to +1562 °F)
-200 °C to +850 °C
(-328 °F to +1562 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
1000
Ω -200 °C to +850 °C
(-328 °F to +1562 °F)
-200 °C to +240 °C
(-328 °F to +464 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(±0.4 °F)
Platinum
(3916)
(1)
100Ω -200 °C to +630 °C
(-328 °F to +1166°F)
-200 °C to +630 °C
(-328 °F to +1166 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
200
Ω -200 °C to +630 °C
(-328 °F to +1166°F)
-200 °C to +630 °C
(-328 °F to +1166 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
500
Ω -200 °C to +630 °C
(-328 °F to +1166°F)
-200 °C to +630 °C
(-328 °F to +1166 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
1000
Ω -200 °C to +630 °C
(-328 °F to +1166°F)
-200 °C to +230 °C
(-328 °F to +446 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
Copper
(426)
(1)(2)
(2) Actual value at 0°C is 9.042Ω per SAMA standard RC21-4-1966.
10Ω
Not allowed.
(5)
(5) To maximize the relatively small RTD signal, only 2 mA excitation current is allowed.
-100 °C to +260 °C
(-148 °F to +500 °F)
0.1 °C
(0.2 °F)
± 0.2 °C
(± 0.4 °F)
Nickel
(618)
(1)(3)
(3) Actual value at 0°C is 100Ω per DIN standard.
120Ω -100 °C to +260 °C
(-148 °F to +500 °F)
-100 °C to +260 °C
(-148 °F to +500 °F)
0.1 °C
(0.2 °F)
± 0.1 °C
(± 0.2 °F)
Nickel (672) 120
Ω -80 °C to +260 °C
(-112 °F to +500 °F)
-80 °C to +260 °C
(-112 °F to +500 °F)
0.1 °C
(0.2 °F)
± 0.1 °C
(± 0.2 °F)
Nickel Iron
(518)
604
Ω -100 °C to +200 °C
(-148 °F to +392 °F)
-100 °C to +200 °C
(-148 °F to +392 °F)
0.1 °C
(0.2 °F)
± 0.1 °C
(± 0.2 °F)