|
Specifications
Standard curve IEC 751
Recommended excitation 1 mA
Dissipation at recommended excitation
100 µW at 273 K
Thermal response time
PT-102 & PT-103: 1.75 s at 77 K, 12.5 s at 273 K; PT-111: 2.5 s at 77 K, 20 s at 273 K
Use in radiation Recommended for use in ionizing radiation environments—Click here for more information
Use in magnetic field Because of their relatively low magnetic field dependence above 30 K, platinum sensors are useful as control elements in magnetic field applications when some error can be tolerated—Click here for more information
Reproducibility4 ±5 mK at 77 K
Soldering standard J-STD-001 Class 2
1 Short-term reproducibility data is obtained by subjecting sensor to repeated thermal shocks from 305 K to 77 K |
|
|
| SoftCal™ Accuracy |
|
73 K to
305 K |
305 K to
400 K |
400 K to
475 K |
475 K to
500 K |
500 K to
670 K |
| 2 S |
±0.25 K |
±0.9 K |
±1.3 K |
±1.4 K |
±2.3 K |
| 3 S |
±0.25 K |
±0.25 K |
±0.25 K |
±1.4 K |
±2.3 K |
|
2S: 77 K and 305 K
3S: 77 K, 305 K and 475 K |
|
| Calibrated Accuracy |
|
Typical sensor accuracy2 |
Long-term
stability3 |
|
Calibrations
to 800 K |
All other
calibrations |
| 30 K |
±10 mK |
±10 mK |
— |
| 77 K |
±12 mK |
±12 mK |
±10 mK |
| 305 K |
±23 mK |
±23 mK |
— |
| 400 K |
±210 mK |
±41 mK |
— |
| 500 K |
±210 mK |
±46 mK |
— |
| 800 K |
±310 mK |
— |
— |
|
2 [(Calibration uncertainty)2 + (reproducibility)2 ] 0.5 for more information see Appendices B, D, and E
3 If not heated above 475 K -long-term stability data is obtained by subjecting sensor to 200 thermal shocks from 305 K to 77 K |
|
|
| Typical Magnetic Field-Dependent Temperature Errors4 Δ T/T (%) at B (magnetic induction) |
| Temperature Response Data Table (typical) |
| |
R (Ω) |
PT-100
S (Ω/K) |
(T/R)
(dR/dT) |
| 20 K |
2.2913 |
0.085 |
0.74 |
| 50 K |
9.3865 |
0.360 |
1.90 |
| 77 K |
20.380 |
0.423 |
1.60 |
| 150 K |
50.788 |
0.409 |
1.20 |
| 300 K |
110.354 |
0.387 |
1.10 |
| 600 K |
221.535 |
0.372 |
1.00 |
| 800 K |
289.789 |
0.360 |
1.00 |
| Click here for expanded response table |
|
| Package base parallel to field B |
| T (K) |
2.5 T |
5 T |
8 T |
14 T |
19 T |
| 20 |
20 |
– |
100 |
250 |
– |
| 40 |
0.5 |
1.5 |
3 |
6 |
8.8 |
| 87 |
0.04 |
0.14 |
0.4 |
1 |
1.7 |
| 300 |
-0.01 |
0.001 |
0.02 |
0.07 |
0.13 |
| 4 Recommended for use when T = 30 K |
|
|
| Range of Use |
|
Minimum limit |
Maximum limit |
| PT-102 |
14 K |
873 K |
| PT-103 |
14 K |
873 K |
| PT-111 |
14 K |
673 K |
|
|
|
| Physical Specifications |
|
Mass |
Lead
type |
Internal
atmosphere |
Materials
used |
UHV
compatible |
Non-magnetic
packaging |
PT-102
|
250 mg |
2, platinum |
Partially filled powder |
Platinum winding partially supported by a high temperature alumina powder inside a ceramic tube, platinum lead wires |
No |
Yes |
| PT-103 |
120 mg |
2, platinum 95%, rhodium 5% alloy |
Fully filled powder |
Platinum winding fully supported by a high temperature alumina powder inside a ceramic tube, platinum/rhodium lead wires |
Somewhat |
Yes |
| PT-111 |
52 mg |
2, platinum |
Solid glass |
One platinum band wound onto a glass tube which is protected from the environment by a layer of glaze, platinum coated nickel lead wires |
Yes |
No |
Platinum Calibration Ranges
 |
Add -LN* for matching PT Sensors to ±0.1 K at 77 K
**Must be purchased with all matching sensors, as well as with the sensor to be matched (either SoftCal or full calibration, e.g., 2S or 14L)
NOTES:
- Upper temperature of AL and AM packages is limited to 800 K.
- If your application requires more than one platinum resistor, up to five platinum resistors can be matched with one another to within ±0.1 K at liquid nitrogen temperature with the purchase of only one calibration.
For larger quantities, or for different requirements, consult Lake Shore. At the time of order, add -LN to the model number.
Example: PT-102-14L-LN is a PT-102-LN RTD with a calibration range of 14 K to 325 K that is matched with at least one other uncalibrated PT-102 to within ±0.1 K at liquid nitrogen temperature.
- For metrological applications below 30 K, use a germanium RTD. PT-100 sensors are not useful below 14 K for metrology and are of limited use below 30 K for temperature control, due to rapid decline in sensitivity.
- For use above 500 K, anneal at Tmax +10 °C for 4 h.
|
|
|
|
|
|
|
|
|
|
|