RTD / Resistance input card specifications

Installation notes

Specifications

Table: RTD / Resistance input card specifications
Item Specification
Number of channels Eight
Sensor Types 2-wire, 3-wire, or 4-wire: Resistance, Pt100, Pt200, Pt500, Ni120, Cu10, user defined
Excitation current 100 µA DC
Repeatability 0.05% of span
Resolution (Varies with sensor type. Refer to Table: RTD, ohms sensor type specifications ). 16 bits conversion
Calibration None required
DC/50/60/Hz Common Mode Rejection 120 dB
Full scale signal range Selectable based on sensor. Refer to Table: RTD, ohms sensor type specifications .
LocalBus Power Rating 12 VDC, 160 mA
Ambient Temperature -40 to 70°C
Accuracy over temperature range Refer to Table: RTD, ohms sensor type specifications.
Heat dissipation 1.9 W
Mounting Assigned slot of I/O carrier
Table: RTD, ohms sensor type specifications
Sensor type Full scale Operating range 25° reference accuracy Temperature drift Resolution
Resistance 0 to 2000 Ω 0 to 2000 Ω ±6.2 Ω ±0.112 Ω/°C ~0.02 Ω
Pt100 -200 to 850°C -200 to 850°C ±0.5°C ±0.018°C/°C ~0.05°C
Pt200 -200 to 850°C -200 to 850°C ±0.5°C ±0.012°C/°C ~0.05°C
Pt500 -200 to 850°C -200 to 850°C ±3.5°C ±0.063°C/°C ~0.18°C
Ni120 -70 to 300°C -70 to 300°C ±0.2°C ±0.006°C/°C ~0.02°C
Cu10 -30 to 140°C -30 to 140°C ±2.0°C ±0.157°C/°C ~0.23°C
Resistance/user defined(1) 0 to 1000 Ω 0 to 1000 Ω ±0.4 Ω ±0.009 Ω/°C ~0.05 Ω
(1) The Callendar-Van Dusen linearization equation can be used with user defined Pt RTDs. Refer to Recommended I/O Practices in DeltaV Books online for usage information.

Wiring diagram

Figure: RTD / Resistance input card wiring diagram