Measurement Computing USB-TEMP-AI - Manual (Page 21)

USB-TEMP-AI User's Guide Specifications
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Note 3: Channel configuration information is stored in the EEPROM of the isolated microcontroller by the
firmware whenever any item is modified. Modification is performed by commands issued over USB
from an external application, and the configuration is made non-volatile through the use of the
EEPROM.
Note 4: The factory default configuration is Disabled . The Disabled mode disconnects the temperature and
voltage inputs from the terminal blocks, and internally connects ground (GND) to all of the A/D
inputs. This mode also disables each of the current excitation sources.
Compatible sensors: T0x-T3x
Table 3. Compatible sensor type specifications
Parameter Conditions
Thermocouple J: -210 °C to 1200 °C
K: -270 °C to 1372 °C
R: -50 °C to 1768 °C
S: -50 °C to 1768 °C
T: -270 °C to 400 °C
N: -270 °C to 1300 °C
E: -270 °C to 1000 °C
B: 0 °C to 1820 °C
RTD 100 Ω PT (DIN 43760: 0.00385 ohms/ohm/°C)
100 Ω PT (SAMA: 0.003911 ohms/ohm/°C)
100 Ω PT (ITS-90/IEC751:0.0038505 ohms/ohm/°C)
Thermistor Standard 2,252 Ω through 30,000 Ω
Semiconductor / IC LM35, TMP35 or equivalent
Accuracy
Thermocouple measurement accuracy: T0x-T3x
Table 4. Thermocouple accuracy specifications, including CJC measurement error. All specifications are (±).
Sensor
Type Sensor temperature
range (°C) Accuracy error
maximum (°C) Accuracy error
Typical (°C)
Tempco
(°C/°C)
J –210 2.028 0.707 0.031
0 0.835 0.278
1200 0.783 0.288
K –210 2.137 0.762 0.035
0 0.842 0.280
1372 0.931 0.389
S –50 1.225 0.435 0.021
250 0.554 0.195
1768 0.480 0.157
R –50 1.301 0.458 0.019
250 0.549 0.190
1768 0.400 0.134
B 250 2.193 2.185 0.001
700 0.822 0.819
1820 0.469 0.468
E –200 1.976 0.684 0.030
0 0.954 0.321
1000 0.653 0.240
T –200 2.082 0.744 0.035