Rockwell-automation 1746-NR4 SLC RTD/Resistance Input Module User Manu Manual de usuario descargar pdf (Pagina 55)

Publication 1746-UM008B-EN-P - December 2006

Preliminary Operating Considerations 55

Effective Resolution

The effective resolution for an input channel depends upon the filter

frequency selected for that channel. This table displays the effective

resolution for the various input types and filter frequencies.

Effective Resolution

Input Type Filter Frequency

10 Hz 50 Hz 60 Hz 250 Hz

100 Ω Pt RTD (385)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.2 °C

(±0.4 °F)

±0.4 °C

(±0.7 °F)

200 Ω Pt RTD (385)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.2 °C

(±0.4 °F)

±0.4 °C

(±0.7 °F)

500 Ω Pt RTD (385)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.3 °C

(±0.5 °F)

±0.4 °C

(±0.7 °F)

1000 Ω Pt RTD (385)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.2 °C

(±0.4 °F)

±0.4 °C

(±0.7 °F)

100 Ω Pt RTD (3916)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.2 °C

(±0.4 °F)

±0.3 °C

(±0.5 °F)

200 Ω Pt RTD (3916)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.3 °C

(±0.5 °F)

±0.3 °C

(±0.5 °F)

500 Ω Pt RTD (3916)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.2 °C

(±0.4 °F)

±0.3 °C

(±0.5 °F)

1000 Ω Pt RTD (3916)

(1)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

±0.2 °C

(±0.4 °F)

±0.3 °C

(±0.5 °F)

10 Ω Cu RTD (426)

(1)(2)

±0.2 °C

(±0.4 °F)

±0.3 °C

(±0.5 °F)

±0.3 °C

(±0.5 °F)

±0.4 °C

(±0.7 °F)

120 Ω Ni RTD (618)

(1)(3)

±0.1 °C

(±0.2 °F)

±0.1 °C

(±0.2 °F)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

120 Ω Ni RTD (672)

(1)

±0.1 °C

(±0.2 °F)

±0.1 °C

(±0.2 °F)

±0.1 °C

(±0.2 °F)

±0.3 °C

(±0.5 °F)

604 Ω NiFe RTD (518)

(1)

±0.1 °C

(±0.2 °F)

±0.1 °C

(±0.2 °F)

±0.1 °C

(±0.2 °F)

±0.2 °C

(±0.4 °F)

150 Ω Resistance Input ±0.02 Ω ±0.04 Ω ±0.04 Ω ±0.08 Ω

500 Ω Resistance Input ±0.1 Ω ±0.2 Ω ±0.2 Ω ±0.4 Ω

1000 Ω Resistance Input ±0.2 Ω ±0.3 Ω ±0.3 Ω ±0.5 Ω

3000 Ω Resistance Input ±0.2 Ω ±0.3 Ω ±0.3 Ω ±0.5 Ω

(1)

The digits following the RTD type represent the temperature coefficient of resistance (µ), which is defined as the resistance change per ohm per °C. For instance,

Platinum 385 refers to a platinum RTD with µ = 0.00385 ohms/ohm - ×C or simply 0.00385 /°C.

(2)

Actual value at 0 °C (32 °F) is 9.042 Ω per SAMA standard RC21-4-1966.

(3)

Actual value at 0 °C (32 °F) is 100 Ω per DIN standard.

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 147 148

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Rockwell-automation 1746-NR4 SLC RTD/Resistance Input Module User Manu Manual de usuario Pagina 55

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