5989-5509.pdf - 第8页

Page 8 Find us at www .keysight.com Capacitance specifications Range Resolution Accur acy Mea suring rate a t full sca le Ma ximum displ ay 1 0 . 000 n F 0.0 01 nF 1 % + 8 4 times/sec. 1 1 00 0 counts 1 00 . 00 n F 0.01 …

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U1252B/U1253B AC current specifications
Function Range Resolution Accuracy ± (% of reading + no. of least significant digit)
Frequency
20 Hz ~ 45 Hz 45 Hz ~ 1 Khz 1 Khz ~ 20 Khz
6
20 Khz~100 Khz
6 8
True RMS AC
current
2, 7
500.00 µA
3
0.01 µA 1.0+20 0.7+20 0.75+20 5.0+80
5000.0 µA 0.1 µA
50.000 mA 0.001 mA
440.00 mA 0.01 mA 1.5+20
5.0000 A 0.0001 A 1.5+20
5
3+60, <3 A/5 kHz
N/A
10.000 A
4
0.001 A
1. Input impedance: Refer to Table A on page 10.
2. ACV measurement is AC coupled; while ACmV and AC μA/mA/A measurement are DC coupled. All specifications are valid from 5% to 100% of range.
3. Input current >35 µARMS.
4. Current can be measured from 2.5 A up to 10 A continuously. An additional 0.5% needs to be added to the specified accuracy if the signal measured is in the range of 10 A ~ 20 A for 30
seconds maximum. After measuring a current of >10 A, leave the meter to cool down for twice the measuring time used before application of low current measurement.
5. Input current < 3 ARMS.
6. These specifications are for typical performance.
7. Crest factor ≤ 5 at half-scale, ≤ 3 at full-scale, and decrease reciprocally for overange as 3 * Full Scale / Input; except for 1000 mV and 1000 V ranges, where this ranges have crest factor ≤
3 at half-scale, ≤ 1.5 at full scale, and decrease reciprocally for overange as 1.5 * Full Scale / Input. For non-sinusoidal waveform, add 0.1 % of reading ± 0.3 % of range.
8. Additional error to be added for frequency > 15 kHz and signal input < 10 % of range: 3 counts of LSD per kHz.
9. 2% over-range on all ranges except AC 1000 V range.
10. The maximum displayable counts is 51000, except for 1000.0 mV, 1000.0 V and 10 A ranges, where the maximum displayable counts is 15000. “0.L” will
be shown for any resultant AC+DC voltage/current that exceeds the maximum displayable counts in manual range. Subject to operate within the product specifications.
U1252B/U1253B AC+DC voltage specifications
Function Range Resolution Accuracy ± (% of reading + no. of least significant digit)
Frequency
30 Hz ~ 45 Hz 45 Hz ~ 1 kHz 1 kHz ~ 5 kHz 5 kHz ~ 15 kHz 15 kHz~100 kHz
8
True RMS AC voltage
1, 2, 10
50.000 mv 0.001 mv 1.5+80 0.4+60 0.7+ 60 0.8+60 3.5+220
500.00 mV 0.01 mV 1.5+65 0.4+30 0.4+30 0.8+45 3.5+125
1000.0 mV 0.1 mV
5.0000 V 0.0001 V 0.6+30 1.5+45
50.000 V 0.001 V 0.4+30
500.00 V 0.01 V N/A N/A
1000.00 V 0.1 V 0.4+45 0.4+45 N/A N/A
U1252B/U1253B AC+DC current specifications
Function Range Resolution Accuracy ± (% of reading + no. of least significant digit)
Frequency
30 Hz ~ 45 Hz 45 Hz ~ 1 kHz
6
1 kHz ~ 20 kHz
6
True RMS AC current
10
500.00 µA
3
0.01 µA 1.1+25 0.8+25 0.8+25
5000.0 µA 0.1 µ A
50.000 mA 0.001 mA 1.2+25 0.9+25 0.9+25
440.00 mA 0.01 mA
5.0000 A 0.0001 A 1.8+30
5
0.9+30 3.3+70, <3 A/5 kHz
10.000 A
4
0.001 A 0.9+25
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Capacitance specifications
Range Resolution Accuracy Measuring rate at
full scale
Maximum display
10.000 nF 0.001 nF 1% + 8 4 times/sec. 11000 counts
100.00 nF 0.01 nF 1% + 5
1000.0 nF 0.1 nF
10.000 µF 0.001 µF
100.00 µF 0.01 µF
1000.0 µF 0.1 µF 1 time/sec.
10.000 mF 0.001 mF 0.1 times/sec.
100.00 mF 0.01 mF 3% + 10 0.01 times/sec
U1251B/U1252B temperature specifications
1,2,3
Thermocouple type Range Resolution Accuracy
ºC ºF ºC ºF
K –200 ~ 1372 ºC –328 ~ 2502 ºF 0.1 ºC /0.1 º F 0.3% + 3 ºC 0.3% + 6 ºF
J
(for U1252A/U1252B)
–210 ~ 1200 ºC –346 ~ 2192 ºF 0.1 º C/0.1 ºF 0.3% + 3 ºC 0.3% + 6 ºF
U1253B temperature specifications
1 2 3
Thermocouple type Range Resolution Accuracy
ºC ºF ºC ºF
K –200 ~ –40 °C –104 ~ –40 °F 0.1 ºC /0.1 º F 1% + 3 °C 1% + 5.4 °F
–40 ~1372 °C –40 ~ 2502 °F 0.1 °C /0.1 °F 1% + 1 °C 1% + 1.8 °F
J –210 ~ –40 °C –346 ~ –40 °F 0.1 °C /0.1 °F 1% + 3 °C 1% + 5.4 °F
–40 ~ 1200 °C –40 ~ 2192 °F 0.1 °C /0.1 °F 1% + 1 °C 1% + 1.8 °F
1. The accuracy does not include the tolerance of the thermocouple probe. The thermal sensor plugged into the meter should be placed in the operating environment for at least an hour.
2. Use the Null function to reduce the thermal effect. Before using the Null function, set the meter to no ambient compensation (0C) mode and keep the thermocouple probe as close to the meter
as possible, avoiding contact with any surface that has a different temperature from the ambient temperature.
3. When measuring temperature with respect to any temperature calibrator, try to set both the calibrator and the meter with an external reference (without internal ambient compensation). If both
the calibrator and the meter are set with internal reference (with internal ambient compensation), deviation may show between the readings of the calibrator and the meter, due to differences
in ambient compensation between the calibrator and the meter.
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U1251B frequency sensitivity during voltage measurement
Frequency sensitivity and trigger level
Input range
3
Minimum sensitivity
(R.M.S. Sine Wave)
Trigger level for DC coupling
(Maximum input for specified
accuracy = 10 x Range or 1000 V)
20 Hz - 100 kHz >100 kHz ~ 200 kHz < 100 kHz >100 kHz ~ 200 kHz
50.000 mV 10 mV 15 mV 10 mV 15 mV
500.00 mV 25 mV 35 mV 60 mV 70 mV
1000.0 mV 40 mV 50 mV 100 mV 150 mV
5.0000 V 0.25 V 0.5 V 0.5 V / 1.25 V (< 100 Hz) 0.6 V
50.000 V 2.5 V 5 V 5 V 6 V
500.00 V 25 V N/A 50 V N/A
1000.0 V 50 V N/A 300 V N/A
U1252B/U1253B frequency sensitivity during voltage measurement
Frequency sensitivity and trigger level
Input range
3
Minimum sensitivity
(RMS sine wave)
Trigger level for DC coupling
(Maximum input for specified
accuracy = 10 x range or 1000 V)
20 Hz ~ 200 kHz >200 kHz ~ 500 kHz < 100 kHz >100 kHz ~ 500 kHz
50.000 mV 10 mV 25 mV 10 mV 25 mV
500.00 mV 70 mV 150 mV 70 mV 150 mV
1000.0 mV 120 mV 300 mV 120 mV 300 mV
5.0000 V 0.3 V 1.2 V 0.6 V 1.5 V
50.000 V 3 V 5 V 6 V 15 V
500.00 V 30 V < 100 kHz N/A 60 V N/A
1000.0 V 50 V < 100 kHz N/A 120 V N/A
Frequency sensitivity during current measurement
Input range Minimum sensitivity (RMS sine wave)
20 Hz ~ 20 Khz
500.00 µA 100 µA
5000.0 µA 250 µA
50.000 mA 10 mA
440.00 mA 25 mA
5.0000 A 1 A
10.000 A 2.5 A
Frequency specifications
5
Range Resolution Accuracy Min. input frequency
1
U1251B/2B U1253B
99.999 Hz 0.001 Hz 0.02%+3
9
0.02%+3
9
1 Hz
999.99 Hz 0.01 Hz 0.02%+3, <600 kHz 0.02%+3, <600 kHz
9.9999 kHz 0.0001 kHz
99.999 kHz 0.001 kHz
999.99 kHz 0.01 kHz
1. The input signal is lower than the product of 20000000 V
x Hz (product voltage and frequency); overload protection:
1000 V.
2. The multimeter will automatically select the most appropriate
range when making frequency measurements.
3. Maximum input for specified accuracy = 10 x range or 1000
V.