User manual

Product information 8
Copyright 2004 Pico Technology Limited. All rights reserved.
2 Product information
2.1 Specifications
Resolution
20 bits (16.25
NFR)
Thermocouple types
B,
E,
J,
K,
N,
R,
S,
T
Number of input channels
8
Conversion time - per active channel
100ms
Conversion time -
CJC
100ms
Uncalibrated accuracy
The sum of ±0.2% and ±0.5
°
C
Full scale input
±70mV
Common mode range
±7.5V
Overvoltage protection
±30V
Input impedance
2M
W
Input connectors
8 x miniature thermocouple
Output connector
USB upstream connector
Power requirements
No power supply required
Environmental conditions
0 to 50
°
C, 25% to 75% humidity
Quoted accuracy over 20 - 30
°
C
NOT water resistant
Note: The resolution and accuracy depend upon the thermocouple type and the temperature range.
Below is a list of the thermocouples and temperature ranges supported by the USB TC-08.
Actual measureable range
Theoretical ranges
CJC
-5
°
C
to 70
°
C
N/a
Type B
20
°
C to 1820
°
C (CJC must be >20
°
C
0
°
C
to 1820
°
C
Type E
-270
°
C
to 910
°
C
-270
°
C
to 1000
°
C
Type J
-210
°
C
to 1200
°
C
-210
°
C
to 1200
°
C
Type K
-270
°
C
to 1370
°
C
-270
°
C
to 1370
°
C
Type N
-270
°
C
to 1300
°
C
-270
°
C
to 1300
°
C
Type R
-50
°
C
to 1760
°
C
-50
°
C
to 1760
°
C
Type S
-50
°
C
to 1760
°
C
-50
°
C
to 1760
°
C
Type T
-270
°
C
to 400
°
C
-270
°
C
to 400
°
C