40
SPRT/PRT Measurement Accuracy using External Rs
SPRT/PRT
Type
External
Reference
Resistance
Temperature
(°C)
Resistance
Ratio (Rx/Rs)
1 Year(23 ± 5)°C
ppm of reading
Equivalent to
Temperature
(mK)
PT25
25 Ω
-189.3442
0.22
2.5
0.13
-38.8344
0.84
1.5
0.32
0.01
1
0.6
0.15
231.928
1.89
0.85
0.44
419.527
2.57
1.5
1.11
660.323
3.37
1.5
1.58
PT100
100 Ω
-189.3442
0.22
1.2
0.07
-38.8344
0.84
0.95
0.20
0.01
1
0.26
0.07
231.928
1.89
0.81
0.42
419.527
2.57
2
1.47
660.323
3.37
2
2.11
* The PT25 indicator is based on an nominal
resistance of 25Ω for RX;
* The PT100 indicator is based on an nominal
resistance of 100Ω for RX
；
* The uncertainty of external Rs is not included. The user may choose the ADT280-RS-25/100 standard resistor as external Rs,
which has an accuracy of 5 ppm at (23±2) °C.
* Excitation Current: 1mA
Summary of Contents for ADT286
Page 1: ......
Page 20: ...19 1 3 Base Structure Picture 1 ADT286 Mainframe...
Page 22: ...21 Picture 2 Connection of inserting and unplugging of embedded scanners...
Page 23: ...22 1 3 1 ADT286 TS Multi channel temperature signal scanner Picture 3 Temperature Device...
Page 25: ...24 1 3 2 ADT286 PS Multi channel process signal scanner Picture 4 Process Device...
Page 129: ......
