Lake Shore Model 332 Temperature Controller User’s Manual
Table 1-2. Model 332 Typical Sensor Performance Chart (Continued)
Sensor Type
Thermocouple
25 mV
Thermocouple
50 mV
Temperature Coefficient Positive Positive
Input Range ±25 mV ±50 mV
Sensor Excitation*
(Constant Current)
Not Applicable Not Applicable
Display Resolution (Sensor Units) 0.1 µV 0.1 µV
Example LSCI Sensor
Chromel versus
AuFe 0.07%
Type K
Standard Sensor Curve By Type By Type
Typical Sensor Sensitivity
†
12.6 µV/K at 4.2 K
22.4 µV/K at 300 K
0.92 µV/K at 4.2 K
40 µV/K at 300 K
36 µV/K at 1500 K
Measurement Resolution:
Sensor Units
Temperature Equivalence
0.4 µV
32 mK at 4.2 K
18 mK at 300 K
0.4 µV
435 mK at 4.2 K
10 mK at 300 K
11 mK at 1500 K
Electronic Accuracy:
Sensor Units
Temperature Equivalents
±1 µV ±0.05%
‡
of reading
±288 mK at 4.2 K
±58 mK at 300 K
±1 µV ±0.05%
‡
of reading
±4.6 K at 4.2 K
±38 mK at 300 K
±722 mK at 1500 K
Temperature Accuracy including
electronic accuracy, CalCurve
and calibrated sensor
Calibration not available
from Lake Shore
Calibration not
available from
Lake Shore
Control Stability:
Sensor Units
Temperature Equivalence
0.8 µV
64 mK at 4.2 K
36 mK at 300 K
0.8 µV
870 mK at 4.2 K
20 mK at 300 K
22 mK at 1500 K
Magnetic Field Use
Recommended for
T > 2 K & B < 19 T
Not Recommended
* Current reversal eliminates thermal EMF voltage errors for resistor sensors.
†
Typical sensor sensitivities were taken from representative calibrations for the sensor listed.
‡
Accuracy specification does not include errors from room temperature compensation.
Introduction 1-7
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