Lake Shore Model 331 Temperature Controller User’s Manual
4.5 CURVE
SELECTION
The Model 331 supports a variety of temperature sensors sold by Lake Shore and other manufacturers.
After the appropriate sensor type is selected for each of the two inputs (Paragraph 4.4), an appropriate
curve may be selected for each input. The Model 331 can use curves from several sources. Standard
curves are included with every instrument and numbered 1
–
20. User curves, numbered 21
–
41, are
loaded when a sensor does not match a standard curve. CalCurve options are stored as user curves.
SoftCal calibrations are stored as user curves or user can enter their own curves from the front panel
(Paragraph 5.2) or computer interface (Chapter 6). The complete list of sensor curves built in to the
Model 331 is provided in Table 4-2.
During normal operation, only the curves related to the input type you have selected are displayed. If
the curve you wish to select does not appear in the selection sequence make sure the curve format
matches the recommended format for the input type selected. Refer to Table 4-1.
NOTE
: The sensor reading of the instrument can always be displayed in sensor units.
If a temperature response curve is selected for an input, its readings may also
be displayed in temperature.
Table 4-2. Sensor Curves
Curve
Number
Display
Sensor
Type
Model
Number
Temperature
Range
For Data Points,
Refer To:
01 DT-470
Silicon
Diode DT-470
1.4
–
475 K
Table D-1
02 DT-670
Silicon
Diode DT-670
1.4
–
500 K
Table D-2
03 DT-500-D
*
Silicon
Diode DT-500-D 1.4
–
365 K
Table D-3
04 DT-500-E1
*
Silicon
Diode DT-500-E1
1.1
–
330 K
Table D-3
05 Reserved
–
–
–
–
06 PT-100
100
Ω
Plat/250
100
Ω
Plat/500
PT-100 30
–
800 K
Table D-4
07 PT-1000
*
1000
Ω
Plat
PT-1000 30
–
800 K
Table D-4
08 RX-102A-AA
NTC
RTD
Rox
RX-102A
0.05
–
40 K
Table D-5
09 RX-202A-AA
NTC
RTD
Rox
RX-202A
0.05
–
40 K
Table D-6
10 Reserved
–
–
–
–
11 Reserved
–
–
–
–
12
Type K
Thermo/25mV & 50mV
Type K
3
–
1645 K
Table D-7
13
Type E
Thermo/25mV & 50mV
Type E
3
–
1274 K
Table D-8
14
Type T
Thermo/25mV & 50mV
Type T
3
–
670 K
Table D-9
15
AuFe 0.03%
*
Thermo/25mV & 50mV
AuFe 0.03%
*
3.5
–
500 K
Table D-10
16
AuFe 0.07%
Thermo/25mV & 50mV
AuFe 0.07%
3.15
–
610 K
Table D-11
17 Reserved
–
–
–
–
18 Reserved
–
–
–
–
19 Reserved
–
–
–
–
20 Reserved
–
–
–
–
21 – 41
User Curves
–
–
–
–
*
No longer sold by Lake Shore.
4-12
Operation
