Measurement-computing USB-2404-UI Manuel d'utilisateur télécharger pdf (Page 18)

USB-2404-UI User's Guide Specifications

Full-bridge, ±62.5 mV/V ±3 ±20

Full-bridge, ±7.8 mV/V ±3 ±20

Input noise

Table 5. Input noise (ppm of rangerms) specifications

Mode, range

Conversion time

High speed Best of 60 Hz

rejection

Best of 50 Hz

rejection

High resolution

Voltage, ±60 V 7.6 1.3 1.3 0.5

Voltage, ±15 V 10.8 1.9 1.9 0.7

Voltage, ±4 V 10.8 2.7 2.7 1.3

Voltage, ±1 V 7.6 1.3 1.3 0.5

Voltage/Thermocouple, ±125 mV 10.8 1.9 1.9 1.0

Current, ±25 mA 10.8 1.9 1.9 1.0

4-wire and 2-wire resistance, 10 kΩ 4.1 1.3 0.8 0.3

4-wire and 2-wire resistance, 1 kΩ 7.1 1.8 1.2 0.7

4-wire and 3-wire RTD, Pt 1000 7.6 1.7 1.1 0.4

4-wire and 3-wire RTD, Pt 100 10.8 1.9 1.9 0.9

Quarter-bridge, 350 Ω 5.4 1.0 1.0 0.7

Quarter-bridge, 120 Ω 5.4 1.0 1.0 0.7

Half-bridge, ±500 mV/V 3.8 0.5 0.5 0.2

Full-bridge, ±62.5 mV/V 5.4 1.0 1.0 0.8

Full-bridge, ±7.8 mV/V 30 4.7 4.7 2.3

Excitation level

Table 6. Half-bridge and full-bridge mode excitation level specifications

Measurement conditions Load resistance (Ω) Excitation (V)

Half-bridge 700 2.5

Half-bridge 240 2.0

Full-bridge 350 2.7

Full-bridge 120 2.2

Table 7. Resistance, RTD, and quarter-bridge mode excitation level specifications

Load resistance (Ω) Excitation (mV)

120 50

350 150

1,000 430

10,000 2,200

Power

Table 8. Power specifications

Parameter Specification

Current consumption from USB 500 mA, maximum

1 2 ... 13 14 15 16 17 18 19 20 21 22

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