OM-USB-2404-UI User's Guide
Specifications
18
4-wire and 3-wire RTD, Pt 1000
±15
±6
4-wire and 3-wire RTD, Pt 100
±15
±60
Quarter-bridge, 350 Ω
±15
±120
Quarter-bridge, 120 Ω
±15
±240
Half-bridge, ±500 mV/V
±3
±20
Full-bridge, ±62.5 mV/V
±3
±20
Full-bridge, ±7.8 mV/V
±3
±20
Input noise
Table 5. Input noise (ppm of range
rms
) 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
