Keysight Technologies U1240 Series Handheld Digital Multimeters Data Sheet
Introduction For technicians or industrial test engineers, your ultimate goal is to keep the production line running seamlessly to prevent any unplanned shutdown. The strong and solid Keysight Technologies, Inc. U1240B and U1240C Series are just the DMMs you need to work efficiently, on the bench or in the field. Certified to IP 67 and with the durability to withstand drops up to 10 feet (3 meters) to suit harsh working environments, the U1240C can work longer for you with up to 400 hours of battery life.
03 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Test Confidently and Efficiently Harmonics ratio In real life, harmonics are present in AC power due to the fact that many electronic devices are powered by switched mode current pulses which travel back into the power source.
04 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Built-in flashlight with ergonomics in mind Designed for handheld users working in poorly lit environments, the U1240C Series fits comfortably in your palm allowing you to single-handedly illuminate the test area with its easily activated built-in LED flashlight. With ergonomics in mind, you can swiftly make more measurements without straining your hands even over a longer period of time. Figure 2.
05 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Perform data logging on-DMM, wired or wirelessly Keep the production lines running smoothly with the U1240 Series DMMs’ data logging capabilities. Users have two options to record individual readings. The first option is to simply record data into the main DMM unit by utilizing the built-in internal memory of up to 2,000 readings storage.
06 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Take a Closer Look at the U1240C Series Front panel 10,000-count dual display Vsense* red LED indicator for non-contact voltage detection Data logging: – Manual data logging up to 100 readings, or, – Auto/event data logging up to 2,000 readings Harmonics ratio* to detect the presence of harmonics content ZLOW (low input impedance)* to remove ghost or induced voltage from your measurement Press-and-hold to switch on the
07 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Take a Closer Look at the U1240B Series Front panel Ambient temperature MINMAX recording Resistance: 0.1 Ω to 100 MΩ Capacitance: 0.1 nF to 10 mF ACμA: 50 µA to 10 mA Frequency: 1 Hz to 200 kHz Backlight: Two intensity levels Diode test switch counter DCV: 0.1 mV to 1000 V ACV: 50 mV to 1000 V Harmonic ratio (U1242B only) T1-T2 Differential temperature (U1242B only) Manual data logging (U1242B only) ACmA: 5 mA to 440 mA ACA: 0.
08 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240C Series Comparison Basic features Display resolution Auto/manual ranging Analog bar graph Backlight AC bandwidth True RMS Measurements Voltage DC Voltage AC Current DC Current AC Resistance Frequency Capacitance Temperature (K-type thermocouple Continuity with beeper Diode test Data management Min/Max recording Display hold Auto hold Null PC-Connectivity Special features Harmonic ratio Vsense: non-contact voltage detection ZLOW -
09 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240C Series General Specifications Display 4 ½-digit liquid crystal display (LCD) with maximum reading of 11,000-count Automatic polarity indication Power consumption 530 mVA maximum with backlight and flashlight. Battery type 4x 1.5 V AA alkaline batteries (ANSI/NEDA 24A or IEC LR03), or; 4x 1.5 V AA zinc chloride batteries (ANSI/NEDA 24D or IEC R03), or; 4x 1.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240C Series DC Specifications Function Voltage Resolution Accuracy ±(% of reading + counts of least significant digit) Test current / burden voltage 100 mV1,3 0.01 mV 0.09% + 2 — 600 mV1,3 0.1 mV 0.09% + 2 — 1000 mV4 0.1 mV 0.09% + 2 — V4 0.001 V 0.09% + 2 — 0.01 V 0.09% + 2 — 0.1 V 0.09% + 2 — ZLOW (applicable to 1000 V range) 0.1 V 1% + 4 — 1000 µA 3 0.1 µA 0.1% + 2 0.032 V (30 Ω) 10 mA 3 0.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240C Series AC Voltage Specifications Function Range 100 voltage1,4 AC True RMS mV2 Resolution Accuracy ±(% of reading + counts of least significant digit) 40 Hz to 1 kHz 1 kHz to 2 kHz 0.01 mV 1.0% + 3 1.5% + 3 600 mV2 0.1 mV 1.0% + 3 1.5% + 3 1000 mV 0.1 mV 1.0% + 3 1.5% + 3 10 V 0.001 V 1.0% + 3 1.5% + 3 100 V 0.01 V 1.0% + 3 1.5% + 3 1000 V 0.1 V 1.0% + 3 1.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240C Series Temperature Specifications Thermal type K J5 Range Resolution Accuracy ±(% of reading + as specified below) –200°C to 1372°C 0.1°C 1% + 1°C –328°F to 2502°F 0.1°F 1% + 1.8°F –210°C to 1200°C 0.1°C 1% + 1°C –346°F to 2192°F 0.1°F 1% + 1.8°F 1. The specification above is specified after 60 minutes of warm-up time. 2. The accuracy does not include the tolerance of the thermocouple probe. 3.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240C Series Sensitivity for Voltage Measurement Input range Maximum input1 for specified accuracy 100 mV2 600 mV2 1000 mV 10 V 100 V 1000 V Minimum sensitivity (RMS sine wave) 0.5 Hz to 20 kHz 20 kHz to 50 kHz 50 kHz to 100 kHz 15 mV 7.2 mV 15 mV 15 mV 7.2 mV 15 mV 125 mV 60 mV 125 mV 1.25 V 0.6 V 1.25 V 12.5 V 6V 12.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240B Series DC Specifications Function Voltage1 Current Resistance4 Range Resolution Test current/ burden voltage Accuracy ±(% of reading + counts of least significant digit) 1000.0 mV 0.1 mV — 0.09% + 5 10.000 V 0.001 V — 100.00 V 0.01 V — 1000.0 V 0.1 V — 0.15% + 5 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.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240B Series AC Specifications Function Range Resolution Test current/ burden voltage Accuracy ±(% of reading + counts of least significant digit) 1000.0 mV 0.1 mV — 1% + 5 2% + 5 — 10.000 V 0.001 V — 1% + 5 1% + 5 2% + 5 100.00 V 0.01 V — 1% + 5 1% + 5 2% + 5 1000.0 V 0.1 V — 1% + 5 1% + 5 — 1000.0 μA 0.1 μA < 0.06 V (50 Ω) 10000 μA 1 μA < 0.55 V (50 Ω) 100.00 mA 0.01 mA < 0.18 V (0.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240B Series Switch Counter Definition Switch condition1, 2 Circuit switch Display 3 Switch threshold Low level Normally close Lo < 370 ohms Intermittent4 Close to open Number of switch count Low to high transition High level Normally open Hi > 430 ohms Intermittent5 Open to close Number of switch count High to low transition 1. 2. 3. 4. 5. Detects intermittent Opens or Closes lasting for at least 250 μsec.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240B Series Measuring Rate Function Times/second ACV 7 DCV (V or mV) 7 Ω 14 Diode 14 Capacitance 4 (< 100 μF) DCA (μA, mA, A) 7 ACA (μA, mA, A) 7 Temperature 7 (single) Frequency 1 (> 10 Hz) U1240B Series 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.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet U1240B Series Ordering Information Standard shipped accessories Four 1.5 V AAA alkaline batteries, Certificate of Calibration (CoC), test probe leads (4-mm tips), Quick Start Guide, free test data (Option UK6) U1241B U1242B U1240C Series Ordering Information Standard shipped accessories Four 1.
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Optional accessories (continued) U1174A carrying case, soft –– For handheld digital multimeters U1172A transit case (aluminium-clad) –– The robust casing to transport your DMM and accessories –– Aluminum-clad, black panel construction –– Dimension: 18 inches (H) x 13 inches (W) x 6 inches (D) –– Weight: 4 kg U1595A rugged carrying case –– High quality, water and dust proof carrying case designed to store up to two handheld and accesso
| Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet Optional accessories (continued) 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 U1169A test probe leads –– Includes two test leads (red and black), and a pair each of 19-mm and 4-mm test probes.
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