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Appendix A
Table 15
System temperature error
Pt100:
Pt500:
Pt1000:
Warm-up time
MEASURpoint:
RTD sensors and external calibration
resistors:
a. Includes the A/D reference and gain errors.
b. Includes a maximum linearity error of 10 ppm and a calibration setup error of 10 ppm. Users must be
aware that subtle resistor value tolerances and self-heating of the external calibration resistors contribute
calibration setup errors.
118
lists the temperature specifications for RTD channels on the DT9872 and DT9874.
Table 15: Temperature Specifications for RTD Channels
Feature
a
Specifications
Offset (typical): ±0.03° C
Offset (maximum): ±0.30° C
RMS noise: 0.03° C
Temperature resolution: 0.002° C
Maximum system error: ±0.80° C
Offset (typical): ±0.007° C
Offset (maximum): ±0.07° C
RMS noise: 0.007° C
Temperature resolution: 0.0004° C
Maximum system error: ±0.16° C
Offset (typical): ±0.003° C
Offset (maximum): ±0.03° C
RMS noise: 0.003° C
Temperature resolution: 0.0002° C
Maximum system error: ±0.08° C
1 hour
1 minute
b
b
b
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