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2620A/2625A
Users Manual
A-6
IEC 751, Amendment 2, 100 e Platinum (ITS-90)
RTD 4 Wire Accuracy* (±°C)
Temperature Resolution 18°C to 28°C 0°C to 60°C
(°C) Slow Fast 90 Day
Slow
1 Year
Slow
1 Year
Fast
1 Year
Slow
1 Year
Fast
-200.00 0.02 0.1 0.13 0.13 0.54 0.13 0.55
0.00 0.02 0.1 0.09 0.09 0.55 0.13 0.59
100.00 0.02 0.1 0.12 0.12 0.59 0.18 0.66
300.00 0.02 0.1 0.23 0.24 0.74 0.34 0.85
600.00 0.02 0.1 0.55 0.56 1.12 0.73 1.29
* Sensor inaccuracies are not included
2-Wire Accuracy
For 2-wire sensors with R
0
= 100Ω: degrade accuracy by 5.0ºC per lead-ohm, plus
degrade accuracy an additional 11ºC for channels 1 to 20 and 0.05ºC for channel 0.
Maximum Current Through Sensor
1 mA
Typical Full Scale Voltage
0.22 V
Maximum Open Circuit Voltage
3.2 V
Maximum Sensor Temperature
600ºC nominal
999.99ºF max displayed
Cross-talk Rejection
Refer to Appendix D.
AC Voltage Inputs
Range Resolution Minimum Input For
Slow Fast Rated Accuracy
300 mV 10 µV 100 µV 20 mV
3 V 100 µV 1 mV 200 mV
30 V 1 mV 10 mV 2 V
300 V 10 mV 100 mV 20 V