Keysight Technologies
U1250 Series Handheld
Digital Multimeters
Data Sheet
Test more – more safely
2
[1] U1253B model
[2] U1252B/U1253B models
Figure 1. Automate recording of measurements with
bundled GUI data-logging software.
Do More with Just One
Instrument
The basic model, U1251B, expands your
capabilities beyond typical DMM measure-
ments to include data logging. The U1252B
starts with the same foundation, and then
adds a 20-MHz frequency counter and
programmable square-wave generator—
so you’d be able to perform more tests
conveniently with one tool. What’s more:
both models come bundled with a complete
set of accessories to equip you right from
the start at no extra cost.
Offering the same functionality as the
U1252B, the U1253B is the world’s first
OLED handheld DMM. You won’t have to
squint to be sure you’re reading it right:
On the go or on the bench, you’ll get
crystal-clear viewing indoors, even in dark,
off-angle situations.
Find Problems Quickly
Troubleshooting can be tricky, especially
when you’re dealing with elusive problems.
With the U1250 Series’data logging capabil-
ity, you can ensure that every reading
gets recorded manually or at intervals you
specify. Better yet: you can have virtually
unlimited data logging saves when you
connect any of the U1250 Series DMM to
a PC with the optional IR-to-USB cable.
In addition, the U1250 Series lets you
achieve greater confidence in your mea-
surements with accurate true-RMS AC
measurements, low DCV error rate of up
to 0.025% and high-resolution display of
50,000 counts.
Uncompromising
Ruggedness and Safety
The U1250 Series DMMs are housed in
robust overmold enclosures, rated at CAT
III 1000 V and CAT IV 600 V and operate
over a wide temperature range of –20 °C to
+55 °C. Each DMM also include a 30 kA
high energy fuse to further protect you
against violent fuse failures during high-
current measurements. Built tough and
certified to stringent industrial standards,
the U1250 DMM is what you need to face
the demands of everyday tasks.
Key Features
– Superior contrast from organic
LED (OLED) display1
– 50,000-count dual display
– Up to 0.025% basic DCV accuracy
– True-RMS AC and AC+DC2
measurements
– K-type and J-type2 temperature
measurements
– Manual and automated (interval)
data logging; internally to DMM
and externally to PC
– CAT III 1000 V and CAT IV 600 V
safety protection
– Built-in 20-MHz frequency counter2
– Built-in programmable square-wave
generator2
The Keysight Technologies, Inc.
U1250 Series handheld digital
multimeters (DMMs) exceed your
expectations by delivering powerful
features and performance that
meet your toughest requirements
and applications. The series latest
multimeters, the offering capabilities
and functions you need.
SHIFT key and one-stop
function keys for easy
access
Broad range of
measurement
functions, including
temperature and
capacitance
Built-in battery
charging for
optimum capacitance
20 MHz frequency
counter2
Data logging to internal
or external memory
Programmable square-wave
generator for stimulation of
digital circuits2
CAT III 1000 V and
CAT IV 600 V overvoltage
protection for assurance
of your safety while you
go about your task
OLED display with approximately 160° viewing angle, and high contrast ratio
of 2000:1 for crystal-clear viewing1
50,000 count dual display with
true-RMS reading capability
[1] U1253B only
[2] U1252B/U1253B only
3
Take a Closer Look
4
DC Specications
[1] Input impedance: Refer to Table A on page 9.
[3] The accuracy of 500 Ω and 5 kΩ is specified after NULL function, which is used to subtract the test lead resistance and the thermal effect.
[4] For the range of 50 MΩ and 500 MΩ, the R.H. is specified for <60%.
[5] The accuracy is specified for <50 nS and after NULL function with open test lead.
[6] Always use the NULL function to zero out thermal effect with open test lead before measuring the signal. If the NULL function is not used,
an additional 20 counts needs to be added to the DC current accuracy. Thermal effect could occur due to the following:
– Wrong operation to measure the high voltage of 50 V ~ 1000 V for resistance, diode, and mV measurements.
– After battery-charging has completed.
– After measuring a current greater than 440 mA, it is suggested that the meter be left to cool down for twice the measuring time used.
[7] Current can be measured 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.
[8] Maximum open voltage: <+ 4.2 V.
Function Range Resolution Test Current/
Burden Voltage
Accuracy ± (% of reading + No. of Least Signicant Digit)
U1251B U1252B/U1253B
Voltage[1] 50.000 mV 0.001 mV – 0.05 + 50[2] 0.05 + 50[2]
500.00 mV 0.01 mV – 0.03 + 5 0.025 + 5
1000.0 mV 0.1 mV –
5.0000 V 0.0001 V –
50.000 V 0.001 V –
500.00 V 0.01 V – 0.03 + 5
1000.0 V 0.1 V –
Resistance[8] 500.00 Ω[3] 0.01 Ω 1.04 mA 0.08 +10 0.05 + 10
5.0000 kΩ[3] 0.0001 kΩ 416 µA 0.08 + 5 0.05 + 5
50.000 kΩ 0.001 kΩ 41.2 µA
500.00 kΩ 0.01 kΩ 4.12 µA
5.0000 MΩ 0.0001 MΩ 375 nA 0.2 + 5 0.15 +5
50.000 MΩ[4] 0.001 MΩ 187 nA 1 + 10 1 + 5
500.00 MΩ[4] 0.01 MΩ 187 nA N/A 3+10 < 200 MΩ / 8+10 > 200 MΩ
500.00 nS[5] 0.01 nS 187 nA 1 + 20 1 + 10
Current 500.00 µA 0.01 µA 0.06 V (100 Ω) 0.1 + 5[6] 0.05 + 5[6]
5000.0 µA 0.1 µA 0.6 V (100 Ω)
50.000 mA 0.001 mA 0.09 V (1 Ω) 0.2 + 5[6] 0.15 + 5[6]
440.00 mA 0.01 mA 0.9 V (1 Ω)
5.0000 A 0.0001 A 0.2 V (0.01 Ω) 0.3 + 10 0.3 + 10
10.000 A[7] 0.001 A 0.4 V (0.01 Ω) 0.3 + 5
Diode Test[8] – 0.1 mV 1.04 mA 0.05 + 5
5
[1] Input impedance: Refer to Table A on page 9.
[3] The accuracy of 500 Ω and 5 kΩ is specified after NULL function, which is used to subtract the test lead resistance and the thermal effect.
[4] For the range of 50 MΩ and 500 MΩ, the R.H. is specified for <60%.
[5] The accuracy is specified for <50 nS and after NULL function with open test lead.
[6] Always use the NULL function to zero out thermal effect with open test lead before measuring the signal. If the NULL function is not used,
an additional 20 counts needs to be added to the DC current accuracy. Thermal effect could occur due to the following:
– Wrong operation to measure the high voltage of 50 V ~ 1000 V for resistance, diode, and mV measurements.
– After battery-charging has completed.
– After measuring a current greater than 440 mA, it is suggested that the meter be left to cool down for twice the measuring time used.
[7] Current can be measured 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.
[8] Maximum open voltage: <+ 4.2 V.
U1252B/U1253B AC Voltage Specications
Function Range Resolution Accuracy ± (% of reading + No. of Least Signicant Digit)
Frequency
20 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] [9]
50.000 mV 0.001 mV 1.5+60 0.4+40 0.7+40 0.75+40 3.5+120
500.00 mV 0.01 mV 0.4+25 0.4+25
1000.0 mV 0.1 mV
5.0000 V 0.0001 V 0.6+25 1.5+40
50.000 V 0.001 V 0.4+25
500.00 V 0.01 V N/A N/A
1000.0 V 0.1 V 0.4+40 0.4+40 N/A N/A
U1251B AC Current Specications
Function Range Resolution Accuracy ± (% of reading + No. of Least Signicant Digit)
Frequency
30 Hz ~ 45 Hz 45 Hz ~ 2 kHz 2 kHz ~ 20 kHz
Ac Current[2]
500.00 µA[4] 0.01 µA 1.5+50 0.8+20 3.0+80
5000.0 µA 0.1 µA 1.5+40 3.0+60
50.000 mA 0.001 mA
440.00 mA 0.01 mA
5.0000 A 0.0001 A 2.0+40[6] 3+60, <3 A/5 kHz
10.000 A[5] 0.001 A
U1251B AC Voltage Specications
Function Range Resolution Accuracy ± (% of reading + No. of Least Signicant Digit)
Frequency
30 Hz ~ 45 Hz 45 Hz ~ 1 kHz 1 kHz ~ 5 kHz 5 kHz ~ 30 kHz
True Rms Ac
Voltage[1] [2]
50.000 mV 0.001 mV 1.0+60 0.6+40 1.0+40 1.6+60
500.00 mV 0.01 mV 0.6+25
1000.0 mV 0.1 mV 1.0+25 3.5+120
5.0000 V 0.0001 V
50.000 V 0.001 V
500.00 V 0.01 V N/A
1000.0 V 0.1 V 0.6+40 1.0+40 N/A
6
U1252B/U1253B AC Current Specications
Function Range Resolution Accuracy ± (% of reading + No. of Least Signicant Digit)
Frequency
20 Hz ~ 45 Hz 45 Hz ~ 1 Khz 1 Khz ~ 20 Khz 20 Khz~100 Khz[7]
TRUE Rms Ac
Current[2] [9]
500.00 µA[4] 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[6] 3+60, <3 A/5 kHz N/A
10.000 A[5] 0.001 A
[1] Input impedance: Refer to Table A on page 9.
[2] AC mV/V and AC µA/mA/A specifications are true RMS AC coupled, valid from 5% to 100% of range. The crest factor may be up to 3 at
full scale, up to 5 at half- scale, except for 1000 mV and 1000 V ranges, where the crest factor is 1.5 at full scale and 3 at half scale.
[4] Input current >35 µArms.
[5] 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.
[6] Input current < 3 Arms.
[7] The additional error to be added as frequency >20 kHz and signal input <10% of range: 3 counts of LSD per kHz.
[8] The additional error to be added as frequency >15 kHz and signal input <10% of range: 3 counts of LSD per kHz.
[9] Crest factor ≤ 3.0 at full scale, 5.0 at half scale except the 1000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at half scale. For
non-sinusoidal waveform, add 0.1% of reading ± 0.3% of range.
U1252B/U1253B AC+DC Voltage Specications
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[4]
True Rms Ac
Voltage[1] [2]
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
7
Capacitance Specications
Range Resolution Accuracy Measuring Rate at
Full Scale
Max. 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
U1252B/U1253B AC+DC Current Specications
Function Range Resolution Accuracy ± (% of reading + No. of Least Signicant Digit)
Frequency
30 Hz ~ 45 Hz 45 Hz ~ 1 kHz 1 kHz ~ 20 kHz
True Rms Ac
Current[10]
500.00 µA[6] 0.01 µA 1.1+25 0.8+25 0.8+25
5000.0 µA 0.1 µA
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[8] 0.9+30 3.3+70, <3 A/5 kHz
10.000 A[7] 0.001 A 0.9+25
U1251B/U1252B Temperature Specications
Thermocouple Type Range Resolution Accuracy
ºC ºF ºC ºF
K –200 ~ 1372 ºC –328 ~ 2502 ºF 0.1 ºC/0.1 ºF 0.3% + 3 ºC 0.3% + 6 ºF
J
(for U1252A/U1252B)
–210 ~ 1200 ºC –346 ~ 2192 ºF 0.1 ºC/0.1 ºF 0.3% + 3 ºC 0.3% + 6 ºF
U1253B Temperature Specications
Thermocouple
Type
Range Resolution Accuracy
ºC ºF ºC ºF
K –200 ~ –40 °C –104 ~ –40 °F 0.1 ºC/0.1 ºF 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
8
U1251B Frequency Sensitivity During Voltage Measurement
Frequency Sensitivity And Trigger Level
Input Range Minimum Sensitivity
(R.M.S. Sine Wave)
Trigger Level For Dc Coupling
(Maximum input for specied
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 Minimum Sensitivity
(R.M.S. Sine Wave)
Trigger Level For Dc Coupling
(Maximum input for specied
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
[1] Input impedance: Refer to Table A on page 9.
[2] Crest factor ≤ 3.0 at full scale, 5.0 at half scale except the 1000 mV and 1000
V ranges where it is 1.5 at full scale, 3.0 at half scale. For non-sinusoidal
waveform, add 0.1% of reading ± 0.3% of range.
[3] The additional error to be added as frequency >20 kHz and signal input
<10% of range: 3 counts of LSD per kHz.
[4] The additional error to be added as frequency >15 kHz and signal input
<10% of range: 3 counts of LSD per kHz.
[6] Input current >35 µArms.
[7] 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.
[8] Input current < 3 Arms.
[9] For non-square wave signals, add 5 counts.
[10] AC voltage and AC current specifications are true RMS AC coupled, valid
from 5% to 100% of range.
Frequency Sensitivity During Current Measurement
Input Range Minimum Sensitivity (R.m.s. 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 Specications[5]
Range Resolution Accuracy Min. Input Frequency
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
9
Peak Hold
Signal Width Accuracy for DC mV/Voltage/Current
Single event > 1 ms 2% + 400 for all ranges
Repetitive > 250 µs 2% + 1000 for all ranges
Duty Cycle and Pulse Width[1]
Function Mode Range Accuracy at Full Scale
Duty Cycle DC Coupling 0.01% ~ 99.99% 0.3% per kHz + 0.3%
Pulse Width 500 ms 0.01 ms 0.2% + 3
2000 ms 0.1 ms 0.2% + 3
[1] The positive or negative pulse width must be greater than 10 µs, and the duty cycle range should be considered. The pulse width range is determined by the frequency of the signal.
U1252B/U1253B Square Wave Output
Output[2] Range Resolution Accuracy
Frequency 0.5, 1, 2, 5, 6[6], 10, 15, 20, 25,
30, 40, 50, 60, 75, 80, 100, 120,
150, 200, 240, 300, 400, 480,
600, 800, 1200, 1600, 2400,
48000 Hz
0.01 Hz 0.005% + 2
Duty Cycle[3] 0.39% ~ 99.60% 0.390625% 0.4% of full scale[4]
Pulse Width[4] 1/Frequency Range/256 0.2 ms + Range/256
Amplitude Fixed 0 ~ +2.8 V 0.1 V 0.2 V
U1252B/U1253B Frequency Counter Specications
Division Range Resolution Accuracy ± (% of reading +
No. of Least Signicant Digit)
Sensitivity Min. Input
Frequency
Maximum
Measurement
Level
U1252B U1253B
1
(secondary display “-1-“)
99.999 Hz 0.001 Hz 0.02% + 3[1] 0.02% + 3[1] 100 mV R.M.S. 0.5 Hz < 30 Vpp
999.99 Hz 0.01 Hz 0.002% + 5, <985 kHz 0.002% + 5,
< 985 kHz
9.9999 kHz 0.0001 kHz
99.999 kHz 0.001 kHz
999.99 kHz 0.01 kHz 200 mV R.M.S.
9.9999 MHz 0.0001 MHz 0.002% + 5, < 1 MHz
100
(secondary display “-100-“)
9.9999 MHz 0.0001 MHz 0.002% + 5, < 20
MHz
0.002% + 5,
< 20 MHz
400 mV R.M.S. 1 MHz
99.999 MHz 0.001 MHz 600 mV R.M.S.
10
Display Rate
Function Times/Second
ACV 7
ACV + dB 7
DCV 7
AC + DC V 2
Ω/nS 14
Diode 14
Capacitance 4 (< 100 µF)
DCI 7
ACI 7
AC + DC I 2
Temperature 6
Frequency 1 (>10 Hz)
Duty cycle/Pulse width 0.5 (>10 Hz)
Decibel (Db) Calculation
dB Base Reference Default Reference
1 mΩ (dBm) 1-9999 Ω 50 Ω
1 V (dBV) 1 V 1 V
Manual and Interval Data Logging
Logging
Type
Maximum Data Points[5]
U1251B U1252B U1253B
MANUAL 100 100 100
INTERVAL 200 200 1000
[1] All frequency counters are susceptible to errors. Shielding inputs from external noise pickup is critical to minimize measurement errors. For
non-square wave signals, add 5 counts.
[2] Output impedance: 3.5 kΩ maximum.
[3] The positive or negative pulse width must be greater than 50 µs for adjustment of the duty cycle or pulse width under different frequencies.
Otherwise, the accuracy and range will be different from the specifications defined.
[4] For signal frequencies greater than 1 kHz, an addition of 0.1% per kHz is added to the accuracy.
[5] For data logging to PC, maximum number of data points is dependent on available hard disk space.
[6] For the U1253B model.
Input Impedance
Table A
Function Range U1251B U1252B/U1253B
DC Voltage 50 mV to 1000 mV 10 MΩ 10 MΩ
5 V to 1000 V 10 MΩ (nominal), with 10 MΩ in
parallel at dual display
10 MΩ (nominal), with 10 MΩ in
parallel at dual display
AC Voltage 50 mV to 1000 mV 10 MΩ in parallel with < 100 pF 10 MΩ in parallel with < 100 pF
5 V to 1000 V
AC + DC Voltage 50 mV to 1000 mV N/A 10 MΩ
5 V to 1000 V 10 MΩ (nominal) in parallel with
10 MΩ, < 100 pF
11
General Specications
Display
Both primary and secondary displays are 5-digit on the LCD display.
Both the primary and secondary displays offer a maximum resolution of 50,000 counts.
Automatic polarity indication.
Connectivity
IR to USB
Power Consumption
105 mVA/420 mVA (with backlight) maximum (U1251B)
165 mVA/480 mVA (with backlight) maximum (U1252B)
420 mVA maximum (U1253B)
Battery Type
9 V Alkaline battery (ANSI/NEDA 1604A or IEC 6LR61)
9 V Carbon-zinc battery (ANSI/NEDA 1604D or IEC6F22)
7.2 V or 8.4 V Ni-MH Rechargeable battery
Battery Life
U1251B: 72 hours typical
U1252B: 36 hours typical
U1253B: 8 hours typical
Operating Environment
– Full accuracy at –20 °C to 55 °C ; and to 80% RH for temperatures up to 35 °C,
decreasing linearly to 50% RH at 55 °C
– 0 to 2000 m altitude per IEC 61010-1 2nd Edition CAT III, 1000 V/CAT IV, 600 V
Storage Compliance
–40 °C to 70 °C with battery removed
Safety Compliance
– IEC 61010-1:2001/EN610101-1:2001
– Canada: CSA C22.2 No. 61010-1:2004
Measurement Category
CAT III 1000 V / CAT IV 600 V
Emc Compliance
Certified to IEC/EN 61326: 2002, CISPR 11, and equivalents for Group 1, Class A
Common Mode Rejection Ratio (CMRR)
U1251B/U1252B: >90 dB at DC, 50/60 Hz ± 0.1% (1 kW unbalanced)
U1253B: >100 dB at DC, 50/60 Hz ± 0.1% (1 kW unbalanced)
Normal Mode Rejection Ratio (NMRR)
U1251B/U1252B: >60 dB at DC, 50/60 Hz ± 0.1%
U1253B: >90 dB at DC, 50/60 Hz ± 0.1%
Temperature Coefficient
0.15 * (specified accuracy)/°C (from 20 °C to 18 °C or 28 °C to 55 °C)
Shock and Vibration
Tested to IEC/EN 60068-2
Dimensions (HxWxD)
203.5 mm x 94.4 mm x 59.0 mm
Weight
U1251B: 504±5 g with battery
U1252B/U1253B: 527±5 g with battery
Warranty
3 years for main unit
3 months for standard accessories unless otherwise specified.
12
Ordering Information
Optional Accessories
Measuring Accessories (Non-temperature)
Standard Shipped Accessories
Description Applicable Models
U1251B U1252B U1253B
Alligator clips ■ ■ ■
SMT grabbers – – –
Fine-tip test probes – – –
Test probe leads (4-mm) ■ ■ ■
Mini grabber – – –
Alkaline 9 V battery ■ – –
Rechargeable Ni-MH battery with power adapter – ■ ■
Soft carrying case – – –
Certificate of Calibration ■ ■ ■
Test Report ■ ■ ■
Quick Start Guide ■ ■ ■
U1251B U1252B U1253B
U1161A Extended Test Lead Kit
Includes two test leads (red and black),
two test probes, medium-sized alligator
clips and 4-mm banana plugs.
– Test leads: CAT III 1000 V, CAT IV
600 V, 15 A
– Test probes: CAT lll 1000 V, CAT lV
600 V, 15 A
– Medium Sized Alligator Clips: CAT III
1000 V, CAT IV 600 V, 15 A
– 4-mm banana plugs: CAT II 600 V, 10 A
U1162A Alligator Clips
– One pair of insulated alligator clips
(red and black). Recommended for use
with Keysight standard test leads.
– Rated CAT III 1000 V, CAT IV 600 V, 15 A.
U1163A SMT Grabbers
– One pair of SMT grabbers (red and
black). Recommended for use with
Keysight standard test leads.
– Rated CAT II 300 V, 3 A.
U1164A Fine-tip Test Probes
– One pair of fine-tip test probes (red
and black). Recommended for use with
Keysight standard test leads.
– Rated CAT II 300 V, 3 A.
13
Optional Accessories (continued)
Measuring Accessories (Non-temperature, continued)
U1583B AC Current Clamp
– Dual range: 40 A and 400 A
– Rated CAT III 600 V
– BNC-to-banana-plug adapter provided
for use with DMMs
U1169A Test Probe Leads
Includes two test leads (red and black), and a
pair each of 19-mm and 4-mm test probes.
– Test leads: CAT III 1000 V, CAT IV 600 V,
15 A
– Test probe (19-mm tip): CAT II 1000 V,
15 A
– Test probes (4-mm tip): CAT III 1000 V,
CAT IV 600 V, 15 A (highly recommended
for CAT IV environment)
U1168A Standard Test Lead Kit
Includes two test leads (red and black),
19-mm and 4-mm test probes, alligator
clips, fine-tip test probes, SMT grabbers
and mini grabber (black).
– Test leads: CAT III 1000 V, CAT IV 600 V,
15 A
– Test probes (19mm tip): CAT II 1000 V,
15 A
– Test probes (4-mm tip): CAT III 1000 V,
CAT IV 600 V, 15 A (highly recommended
for CAT IV environment)
– Alligator clips: CAT III 1000V,
CAT IV 600 V, 15 A
– Fine-tip test probes: CAT II 300 V, 3 A
– SMT grabber: CAT II 300 V, 3 A
– Mini grabber: CAT II 300 V, 3 A
Measuring Accessories (Temperature)
U1180A Thermocouple
Adapter+Lead Kit, J and K Types
Includes thermocouple adapter, thermo-
couple bead J-type and thermocouple
bead K-type.
– T/C adapter J/K-type
– T/C bead J-type: –20 °C to 200 °C
– T/C bead K-type: –20 °C to 200 °C
U1181A Immersion Temperature
Probe
– Type-K T/C for use in oil and other
liquids
– Measurement range: –50 °C to 700 ºC
– Includes adapter U1184A for connection
to DMM
U1182A Industrial Surface
Temperature Probe
– Type-K T/C for use on still surfaces
– Measurement range: –50 ºC to 400 ºC
– Includes adapter U1184A for connection
to DMM
U1183A Air Temperature Probe
– Type-K T/C for use in air and
non-caustic gas
– Measurement range: –50 ºC to 800 ºC
– Includes adapter U1184A for connection
to DMM
U1184A Temperature Probe
Adapter
– Mini-connector-to-banana-plug adapter
for use with DMM
U1185A J-type Thermocouple
and Adapter
– T/C adapter J/K-type
– T/C bead J-type: –20 °C to 200 °C
14
Cable
Hanging Kit
Carrying Case
AC Adaptor
U1170A AC Adaptor
Includes AC power cord based on country
U1173A IR-to-USB Cable
– For remote control and data logging to PC
– Max. baud rate: 19,200 bits per second
U1171A Magnetic Hanging Kit
For fastening of DMM to a steel surface
so both hands are free.
Measuring Accessories (Temperature, continued)
U1186A K-type Thermocouple
and Adapter
– T/C adapter J/K-type
– T/C bead J-type: –20 °C to 200 °C
U1172A Transit Case
(Aluminium-clad)
The robust casing to transport your DMM
and accessories
– Aluminum-clad, black panel construction
– Dimension: 18” (H) x 13” (W) x 6“ (D)
– Weight: 4 kg
U1174A Soft Carrying Case
The convenient way to carry your DMM
and essential accessories
– Dimension: 9” (H) x 5” (W) x 3” (D)
This information is subject to change without notice.
© Keysight Technologies, 2011- 2014
Published in USA, August 1, 2014
5989-5509EN
www.keysight.com
15 | Keysight | U1250 Series Handheld Digital Multimeters – Data Sheet
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