U1240 Datasheet, PDF (4/9 Pages) Agilent(Hewlett-Packard) – Agilent U1240 Series Handheld Digital Multimeters

Electrical Specifications
AC specifications
Function Range
Resolution
Test current/
burden voltage
Accuracy ± (% of reading + counts of
least significant digit)
40 to 500 Hz 500 Hz to 1 kHz 1 to 2 kHz
1000.0 mV 0.1 mV
–
2% + 5
–
AC voltage^{8, 12 10.000 V}
0.001 V
–
True RMS
100.00 V
0.01 V
–
1% + 5
1% + 5
2% + 5
1000.0 V
0.1 V
–
–
1000.0 µA 0.1 µA
< 0.06 V (50 Ω)
10000 µA
1 µA
< 0.55 V (50 Ω)
AC current^{9, 12}
True RMS
100.00 mA
0.01 mA
< 0.18 V (0.5 Ω)
1% + 5
1.5% + 5
–
440.0 mA¹⁰ 0.1 mA
< 0.8 V (0.5 Ω)
10.000 A¹¹ 0.001 A
< 0.4 V (0.01 Ω)
8. Input impedance: 10 MΩ (nominal) in parallel with < 100 pF, with overload protection of 1000 V RMS
9. Crest factor ≤ 3. For non-sinusoidal waveforms with crest factor up to 3, add 2% reading + 2% full scale typical.
10. Current can be measured from 50 mA to 440 mA continuously. An additional 0.2% needs to be added to the specified accuracy if the signal
measured is in the range of 440 mA to 1100 mA for 30 seconds maximum. After measuring a current of > 440 mA, leave the meter to cool down for
twice the measuring time used before application of low current measurement.
11. Current can be measured from 0.5 A up to 10 A continuously with a maximum operating temperature of 50 °C. An additional 0.3% needs to be added
to the specified accuracy if the signal measured is in the range of 10 A to 19.999 A for 15 seconds maximum. After measuring a current of >10 A,
leave the meter to cool down for 60 seconds before applying a low current measurement.
12. AC voltage and AC current specifications are AC coupled. True RMS measurement is valid from 5 % of range to 100 % of range.
Temperature specifications
Thermocouple type
K (for U1241B and U1242B)
J (for U1242B only)
Range
–40 to 1000 ºC/–48 to 1832 ºF
–40 to 1000 ºC/–48 to 1832 ºF
Resolution
0.1 °C /0.1 °F
0.1 ºC/0.1 ºF
Accuracy ± (% of reading +
offset error)
1% + 1 ºC/1% + 1.8 °F
1% + 1 ºC/1% + 1.8 °F
Capacitance specifications
Range
1000.0 nF
10.000 µF
100.00 µF
1000.0 µF
10.000 mF
Resolution
0.1 nF
0.001 µF
0.01 µF
0.1 µF
0.001 mF
Accuracy ± (% of reading + counts of least significant digit)
1.2% + 4
2% + 4
Harmonic ratio specifications
Range
0.0% to 99.9%
Frequency
40 to 500 Hz
Voltage
100 mVAC to 1000 VAC
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