Owner's manual

12 ArmorPOINT RTD and Thermocouple Input Modules
Publication 1738-IN005B-EN-E - January 2013
Specifications
ArmorPOINT RTD and Thermocouple Input Modules –
1738-IR2M12, 1738-IT2IM12
Attribute Value
Inputs per module 1738-IR2M12 – 2 single-ended, nonisolated
1738-IT2IM12 – 2 differential, individually isolated
Resolution 1738-IR2M12 – 16 bits, 9.5 mV/cnt, 0.03 °C/cnt (Pt385 @ 25 °)
1738-IT2IM12 – 15 bits plus sign, 2.5 mV/cnt
Thermocouple type (and
resolution average over span)
1738-IT2IM12 only
Sensor Range Resolution (average over span)
Type B 30…1820 °C 3 counts/°C
Type C 0…2315 °C 6 counts/°C
Type E -270…1000 °C 24 counts/°C
Type J -210…1200 °C 21 counts/°C
Type K -270…1372 °C 13 counts/°C
Type N -270…1300 °C 11 counts/°C
Type R -50…1768.1 °C 4 counts/°C
Type S -50…1768.1 °C 4 counts/°C
Type T -270…400 °C 15 counts/°C
RTD sensors supported 1738-IR2M12 only
100 Ω Pt α = 0.00385 Euro (-200…870 °C)
200 Ω Pt α = 0.00385 Euro (-200…630 °C)
100 Ω Pt α = 0.003916 U.S. (-200…630 °C)
200 Ω Pt α = 0.003916 U.S. (-200…630 °C)
10 Ω Cu α = 0.00427 (-200…260 °C)
100 Ω Ni α = 0.00618 (-60…250 °C)
120 Ω Ni α = 0.00672 (-60…250 °C)
120 Ω Ni α = 0.00618 (-60…250 °C)
Cold junction
compensation range
1738-IT2IM12 – 0…70 °C
Input range 1738-IR2M12 – 0…600 Ω
1738-IT2IM12 – ±75 mV
Absolute accuracy
(1)
0.1% full scale @ 25 °C
Accuracy drift w/temp 30 ppm/°C