2680A/2686A
Users Manual
A-16
Table A-19. PAI Module Thermocouple Specifications (cont.)
Accuracy
+
°
C
Thermocouple Resolution
18
°
C to 28
°
C -10
°
C to 60
°
C
ITS90
°
C
90 Day
1 Year
1 Year
Type Temperature
°
C Slow
Slow
Fast
Slow
Fast
B
600 to 900
0.2
1.20
1.40
3.10
1.50
3.20
900 to 1200
0.2
0.90
1.00
2.20
1.20
2.40
1200 to 1820
0.1
0.75
1.00
1.90
1.30
2.20
C
0 to 150
0.2
0.80
0.90
1.60
1.00
1.70
150 to 650
0.1
0.65
0.75
1.40
1.00
1.50
650 to 1000
.05
0.65
0.85
1.40
1.20
1.80
1000 to 1800
.05
1.00
1.30
2.10
2.10
2.80
1800 to 2316
.05
1.60
2.10
3.20
3.40
4.60
T
-100 to 0
.04
0.60
0.65
1.00
0.70
1.10
0 to 150
.03
0.40
0.50
0.80
0.60
0.90
150 to 400
.02
0.30
0.40
0.60
0.60
0.80
U
-100 to 0
.04
1.50
1.50
2.60
1.60
3.00
0 to 600
.04
0.60
0.80
1.60
1.10
1.90
Thermistor
Accuracy
+
°
C
90 Day
1 Year
Temp
°
C
Range*
Slow Slow
-40 to 150
100 to 100 m
Ω
0.3
0.4
18
to
23
°
C
Steinhart – Hart Equation: 1/(T
o
Kelvin) = A + B*(ln
Ω
) + C*(ln
Ω
)
3
Default constants are supplied only for a YSI (type 004) 2,252
Ω
thermistor, you can enter
constants for other thermistors. The ranges of thermistor constants are as follows: A 1.0E-4 to
1.0E-2, B 1.0E-5 to 1.0E-3, and C 1.0E-8 to 1.0E-6.
*Assumes 4-wire measurement for thermistor resistance values below 2 k
Ω
(above 28
°
C for a
2.252 k
Ω
thermistor).
Summary of Contents for 2680A
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