Measurement-computing USB-TEMP-AI Manuel d'utilisateur télécharger pdf (Page 21)

USB-TEMP-AI User's Guide Specifications

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)

–210

2.028

0.707

0.031

0.835

0.278

1200

0.783

0.288

–210

2.137

0.762

0.035

0.842

0.280

1372

0.931

0.389

–50

1.225

0.435

0.021

250

0.554

0.195

1768

0.480

0.157

–50

1.301

0.458

0.019

250

0.549

0.190

1768

0.400

0.134

250

2.193

2.185

0.001

700

0.822

0.819

1820

0.469

0.468

–200

1.976

0.684

0.030

0.954

0.321

1000

0.653

0.240

–200

2.082

0.744

0.035

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Measurement-computing USB-TEMP-AI Manuel d'utilisateur Page 21

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