Lake Shore Model 331 Temperature Controller User’s Manual
1.1 SENSOR SELECTION
Table 1-1. Sensor Temperature Range
Model Useful Range Magnetic Field Use
Diodes Silicon Diode DT-670-SD 1.4 K to 500 K
T ≥ 60 K & B ≤ 3 T
Silicon Diode DT-670E-BR 30 K to 500 K
T ≥ 60 K & B ≤ 3 T
Silicon Diode DT-414 1.4 K to 375 K
T ≥ 60 K & B ≤ 3 T
Silicon Diode DT-421 1.4 K to 325 K
T ≥ 60 K & B ≤ 3 T
Silicon Diode DT-470-SD 1.4 K to 500 K
T ≥ 60 K & B ≤ 3 T
Silicon Diode DT-471-SD 10 K to 500 K
T ≥ 60 K & B ≤ 3 T
GaAlAs Diode TG-120-P 1.4 K to 325 K
T > 4.2 K & B ≤ 5 T
GaAlAs Diode TG-120-PL 1.4 K to 325 K
T > 4.2 K & B ≤ 5 T
GaAlAs Diode TG-120-SD 1.4 K to 500 K
T > 4.2 K & B ≤ 5 T
Positive
Temperature
Coefficient RTDs
100 Ω Platinum
PT-102/3 14 K to 873 K
T > 40 K & B ≤ 2.5 T
100 Ω Platinum
PT-111 14 K to 673 K
T > 40 K & B ≤ 2.5 T
Rhodium-Iron RF-800-4 1.4 K to 500 K
T > 77 K & B ≤ 8 T
Rhodium-Iron RF-100T/U 1.4 K to 325 K
T > 77 K & B ≤ 8 T
Negative
Temperature
Coefficient
RTDs
2
Cernox™ CX-1010 2 K to 325 K
5
T > 2 & B ≤ 19 T
Cernox™ CX-1030-HT 3.5 K to 420 K
3,6
T > 2 & B ≤ 19 T
Cernox™ CX-1050-HT 4 K to 420 K
3,6
T > 2 & B ≤ 19 T
Cernox™ CX-1070-HT 15 K to 420 K
3
T > 2 & B ≤ 19 T
Cernox™ CX-1080-HT 50 K to 420 K
3
T > 2 & B ≤ 19 T
Germanium GR-200A/B-1000 2.2 K to 100 K
4
Not Recommended
Germanium GR-200A/B-1500 2.6 K to 100 K
4
Not Recommended
Germanium GR-200A/B-2500 3.1 K to 100 K
4
Not Recommended
Carbon-Glass CGR-1-500 4 K to 325 K
5
T > 2 K to ≤ 19 T
Carbon-Glass CGR-1-1000 5 K to 325 K
5
T > 2 K to ≤ 19 T
Carbon-Glass CGR-1-2000 6 K to 325 K
5
T > 2 K to ≤ 19 T
Rox™ RX-102A 1.4 K to 40 K
5
T > 2 K to ≤ 10 T
Thermocouples Type K 9006-006 3.2 K to 1505 K Not Recommended
Type E 9006-004 3.2 K to 934 K Not Recommended
Chromel-AuFe 0.07% 9006-002 1.2 K to 610 K Not Recommended
2
Single excitation current may limit the low temperature range of NTC resistors.
3
Non-HT version maximum temperature: 325 K.
4
Low temperature limited by input resistance range.
5
Low temperature specified with self-heating error: ≤5 mK.
6
Low temperature specified with self-heating error: ≤12 mK.
Silicon diodes are the best choice for general cryogenic use from 1.4 K to above room temperature.
Diodes are economical to use because they follow a standard curve and are interchangeable in many
applications. They are not suitable for use in ionizing radiation or magnetic fields.
Cernox™ thin-film RTDs offer high sensitivity and low magnetic field-induced errors over the 2 K to
420 K temperature range. Cernox sensors require calibration.
Platinum RTDs offer high uniform sensitivity from 30 K to over 800 K. With excellent reproducibility,
they are useful as thermometry standards. They follow a standard curve above 70 K and are
interchangeable in many applications.
1-4 Introduction
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