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Agilent U1242B 4-Digit Handheld Digital Multimeter

Name: Agilent U1242B 4-Digit Handheld Digital Multimeter
Brand: Agilent
SKU: AgilentU1242B
Price: 226.00 USD
Availability: InStock

0 reviews | Model: Agilent U1242B

Agilent U1242B 4-Digit Handheld Digital Multimeter - Front View

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True RMS 10000 count handheld DMM with datalogging

Manual data logging (U1242B only)
Built-in switch counter, harmonic ratio (U1242Bonly)
Dual/differential temperature capabilities (U1242B only)
CAT III 1000 V and CAT IV 600 V safety protection
True RMS AC measurement
Advanced functions – capacitance, temperature, MINMAX recording
Check more, fix more
- 10,000-count display
- 0.09% basic DC voltage accuracy and true RMS measurement
- Basic functions: DCV, DCI, ACV, ACI, resistance, frequency, continuity, diode test
- Advanced functions: capacitance, switch counter, harmonic ratio, dual and differential temperature, data logging to DMM (up to 200 points)
Ease of use
- Adjustable backlighting
- Min/Max recording
Built to last
- CAT III 1000V and CAT IV 600V over voltage protection
- Certified to CE and CSA
- Compatible with U1177A/U1117A IR-Bluetooth adapter for remote monitoring & datalogging

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Keysight U1240 Series Handheld Digital Multimeters

The Keysight U1242B 4-digit handheld digital multimeter (DMM) is designed for quick checks and fixes in the installation and maintenance of machinery, facility and electrical systems. Key capabilities include the switch counter for the detection of glitches on facility switch and relay systems. The harmonic ratio function helps detect the presence of harmonics in AC supplies that can lead to overheating of motors, generators and transformers. The U1242B also enables dual and differential temperature measurements for heating, ventilation and air-conditioning (HVAC) systems. Monitoring differential temperature in real-time is especially useful in making sure that HVAC components in the system are cooling or heating the way they should with respect to time. With the U1242B, you can perform inspections quickly and conveniently with the same troubleshooting tool that you carry on your daily rounds.

Keysight’s handheld DMMs include safety features that help you perform day-to-day measurements with confidence. Reduce the risk of injury due to arc flash while probing near-contact points with specially designed 4-mm-tip probes. A built-in 30 kA high-energy fuse shields you from potentially violent fuse failures when working in high-current environments. Clad in bright orange cases, these handheld DMMs are a vivid reminder that there is an extra layer of protection between you and the unknown.

Keysight Technologies, Inc. U1240 Series handheld digital multimeters enable you to check more with wider measurement ranges. They feature true RMS readings on their 10,000-count displays. The adjustable backlighting allows you to complete your jobs even in subdued lighting conditions, or to simply prolong battery life. Your maintenance tasks are greatly simplified due to the built-in switch counter, harmonic ratio, dual and differential temperature capabilities, with just a press of the button. The meters have a high safety rating with CAT III 1000 V and CAT IV 600 V protection and are certified to CE and CSA standards. On top of that, the U1240 Series comes with a certificate of calibration and test report – at no extra cost.

The latest multimeters in this series, the U1241B and U1242B, now come in vivid orange cases, offering the capabilities and functions you need.

Electrical Specifications
DC specifications
Function	Range	Resolution	Test current/burden voltage	Accuracy ± (% of reading + counts of least significant digit)
Function	Range	Resolution	Test current/burden voltage	U1241B	U1242B
Voltage^¹
	1000.0 mV	0.1 mV	–	0.09% + 5
	10.000 V	0.001 V	–	0.09% + 2
	100.00 V	0.01 V	–	0.09% + 2
	1000.0 V	0.1 V	–	0.15% + 5
Current	1000.0 µA	0.1 µA	< 0.06 V (50 Ω)	0.1% + 3
	10000 µA	1 µA	< 0.55 V (50 Ω)	0.1% + 3
	100.00 mA	0.01 mA	< 0.18 V (0.5 Ω)	0.2% + 3
	440.0 mA^²	0.1 mA	< 0.8 V (0.5 Ω)	0.5% + 3
	10.000 A^³	0.001 A	< 0.4 V (0.01 Ω)	0.6% + 5
Resistance^⁴	1000.0 Ω5	0.1 Ω	0.5 mA	0.3% + 3
	10.000 kΩ	50.001 kΩ	50 µA
	100.00 kΩ	0.01 kΩ	4.91 µA
	1000.0 kΩ	0.1 kΩ	447 nA
	10.000 MΩ	0.001 MΩ	112 nA	0.8% + 3
	100.00 MΩ	6 0.01 MΩ	112 nA	1.5% + 3
	100.00 MΩ^⁶	0.01 MΩ	112 nA	1.5% + 3
Diode test^⁷	1 V	0.001 V	approximately 0.5 mA	0.3% + 2

Input impedance: 10 MΩ (nominal).
Current can be measured up 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 applying a low current measurement.
Current can be measured 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.
The maximum open voltage is < 2.8 V. For instant continuity, the built-in buzzer sounds when resistance is < 10.0 Ω.
The accuracy of 1 kΩ and 10 kΩ is specified after Null function, which is used to substrate the test lead resistance and the thermal effect.
For the range of 100 MΩ, the R.H. is specified for < 60%. The temperature coefficient will be 0.15 times of specified accuracy as > 50 MΩ.
Overload protection: 1000 V RMS for circuits < 0.3 A short circuit current. The built-in buzzer sounds when reading is approximately below 50 mV and audible single tone for normal forward biased diode or semiconductor junction as 0.3 V ≤ Reading ≤ 0.8 V.

DC 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
AC voltage^{^{8, 12}} True RMS
	1000.0 mV	0.1 mV	–	1% + 5	2% + 5	–
	10.000 V	0.001 V	–		1% + 5	2% + 5
	100.00 V	0.01 V	–
	1000.0 V	0.1 V	–			–
AC current^{^{9, 12}} True RMS
	1000.0 µA	0.1 µA	< 0.06 V (50 Ω)	1% + 5	1.5% + 5	–
	10000 µA	1 µA	< 0.55 V (50 Ω)
	100.00 mA	0.01 mA	< 0.18 V (0.5 Ω)
	440.0 mA^¹⁰	0.1 mA	< 0.8 V (0.5 Ω)
	10.000 A^¹¹	0.001 A	< 0.4 V (0.01 Ω)

Input impedance: 10 MΩ (nominal) in parallel with < 100 pF, with overload protection of 1000 V RMS
Crest factor ≤ 3. For non-sinusoidal waveforms with crest factor up to 3, add 2% reading + 2% full scale typical.
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.
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.
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	Range	Resolution	Accuracy ± (% of reading + offset error)
K (for U1241B and U1242B)	–40 to 1000 ºC/–48 to 1832 ºF	0.1 °C /0.1 °F	1% + 1 ºC/1% + 1.8 °F
J (for U1242B only)	–40 to 1000 ºC/–48 to 1832 ºF	0.1 ºC/0.1 ºF	1% + 1 ºC/1% + 1.8 °F

Capacitance specifications
Range	Resolution	Accuracy ± (% of reading + counts of least signficant digit)
1000.0 nF	0.1 nF	1.2% + 4
10.000 µF	0.001 µF	1.2% + 4
100.00 µF	0.01 µF	2% + 4
1000.0 µF	0.1 µF
10.000 mF	0.001 mF
Harmonic ratio specifications
Range	Frequency	Voltage
0.0% to 99.9%	40 to 500 Hz	100 mVAC to 1000 VAC

GENERAL SPECIFICATIONS
Display	Dual display (secondary display is intended for temperature function display only) consists of 4-digit liquid crystal display (LCD) with maximum reading of 11,000 counts. Automatic polarity indication.
Power consumption	0.22 VA maximum
Battery type and life	Four single standard 1.5 V AAA batteries (Alkaline or Zinc Chloride type); 300 hours typical
Operating environment	− Full accuracy at –10 to 55 °C; and to 80% RH for temperatures up to 30 °C, decreasing linearly to 50% RH at 55 °C − 0 – 2000 meters per IEC 61010-1 2nd Edition CAT III, 1000 V / CAT IV, 600 V IEC 61010-1 2nd Edition
Storage compliance	–20 to 70 °C
Safety compliance	− IEC 61010-1:2001 / EN61010-1:2001 − Canada: CSA C22.2 No. 61010-1:2004
Measurement category	CAT III 1000 V / CAT IV 600 V Overvoltage Protection, Pollution Degree 2
EMC compliance	− CISPR 11:1990/EN55011:1990 − Canada: ICES-001:2004 − Australia/New Zealand: AS/NZS CISPR11:2004
Common Mode Rejection Ratio (CMRR)	> 90 dB at DC, 50/60 Hz ± 0.1% (1 kΩ unbalanced)
Normal Mode Rejection Ration (NMRR)	> 60 dB at 50/60 Hz ± 0.1%
Crest factor	< 3.0
Temperature coefficient	0.1 × (specified accuracy) / °C (from –10 to 18 °C or 28 to 55 °C)
Shock and vibration	Tested to IEC/EN 60068-2
Dimensions (H x W x D)	193.8 mm x 92.2 mm x 58.0 mm
Weight	− 450 g with batteries − 400 g without batteries
Warranty	− Three years for main unit − Three months for standard shipped accessories

Multimeters Template
Style	Hand-Held

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Agilent U1242B 4-Digit Handheld Digital Multimeter

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Keysight U1240 Series Handheld Digital Multimeters

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