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
