Fluke 2638A - Thermocouple Measurement Characteristics; Digital I;O; Totalizer

2638A
Users Manual
1-22
B
100 °C to 1820 °C
300 °C
600 °C
1200 °C
1600 °C
1.32 °C
0.68 °C
0.41 °C
0.38 °C
1.97 °C
1.02 °C
0.60 °C
0.55 °C
1.97 °C
1.02 °C
0.60 °C
0.55 °C
C
0 °C to 2315 °C
600 °C
1200 °C
2000 °C
0.23 °C
0.28 °C
0.44 °C
0.33 °C
0.40 °C
0.60 °C
0.54 °C
0.63 °C
0.91 °C
D
0 °C to 2315 °C
600 °C
1200 °C
2000 °C
0.22 °C
0.26 °C
0.39 °C
0.32 °C
0.36 °C
0.53 °C
0.44 °C
0.49 °C
0.69 °C
G
0 °C to 2315 °C
600 °C
1200 °C
2000 °C
0.24 °C
0.22 °C
0.33 °C
0.36 °C
0.32 °C
0.46 °C
0.36 °C
0.33 °C
0.46 °C
L
-200 °C to 900 °C
-200 °C
0 °C
800 °C
0.13 °C
0.08 °C
0.09 °C
0.19 °C
0.12 °C
0.12 °C
0.99 °C
0.62 °C
0.48 °C
M
-50 °C to 1410 °C
0 °C
500 °C
1000 °C
0.11 °C
0.10 °C
0.10 °C
0.16 °C
0.15 °C
0.14 °C
0.64 °C
0.51 °C
0.41 °C
U
-200 °C to 600 °C
-200 °C
0 °C
400 °C
0.25 °C
0.10 °C
0.08 °C
0.37 °C
0.15 °C
0.11 °C
1.48 °C
0.63 °C
0.40 °C
W
0 °C to 2315 °C
600 °C
1200 °C
2000 °C
0.24 °C
0.22 °C
0.33 °C
0.36 °C
0.32 °C
0.46 °C
0.36 °C
0.33 °C
0.46 °C
Thermocouple Measurement Characteristics
Range
Temperature Display Resolution
Slow
Sample Rate
Medium/Fast
Sample Rate
-270 °C to 2315 °C 0.01 °C 0.1 °C
Digital I/O
Absolute Voltage Range ......................................... -4 V to 30 V
Input Minimum Logic High ...................................... 2.0 V
Input Maximum Logic Low ...................................... 0.7 V
Output Type ............................................................ open drain active low
Output Logic Low (<1 mA) ...................................... 0 V to 0.7 V
Maximum Sink Current ........................................... 50 mA
Output Resistance .................................................. 47 Ω
Totalizer
Absolute Voltage Range ......................................... -4 V to 30 V
Minimum Logic High ............................................... 2.0 V
Maximum Logic Low ............................................... 0.7 V
Minimum Pulse Width ............................................. 50 µs
Maximum Frequency .............................................. 10 kHz
Debounce Time ....................................................... 1.7 ms
Maximum Count ...................................................... 1048575 (20 bits)
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