Datasheet

09 | Keysight | U1240 Series Handheld Digital Multimeters - Data Sheet
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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 1.5 V AA lithium batteries (ANSI/NEDA 24-LF or IEC FR03)
Battery life 400 hours typical based on new alkaline batteries for DC voltage measurement
Connectivity
Infrared (IR) port, connect with:
– IR-USB cable, or;
– U1117A IR-to-Bluetooth adapter (Bluetooth Class 1), or;
– U1177A IR-to-Bluetooth adapter (Bluetooth Class 2)
Fuse
10 x 35 mm, 440 mA / 1000 V, 10 kA minimum fast-acting fuse
10 x 38 mm, 11 A / 1000 V, 20 kA minimum fast-acting fuse
Operating environment
Full accuracy from –20°C to 55°C; and up to 80% R.H. for temperature up to 30°C decreasing linearly to
50% R.H. at 55°C
Pollution degree II
Altitude up to 3000 meters
Storage compliance –40 0C to 70°C, 0 to 80% R. H. (with battery removed)
Safety compliance
IEC 61010-1:2010 / EN 61010-1:2010, IEC 61010-2-033:2012 / EN 61010-2-033:2012
Canada: CAN/CSA-C22.2 No.61010-1-12, CAN/CSA-C22.2 No. 61010-2-033-12
USA: ANSI/UL Std. No. 61010-1 (3rd Edition), ANSI/UL Std. No. 61010-2-033 (1st Edition)
Measurement category CAT III 1000 V / CAT IV 600 V
Electromagnetic compatibility (EMC)
Commercial limits compliance with EN61326-1
Influence of radiated immunity: In RF electromagnetic fields of 3 V/M
DC voltage measurement typical accuracy: 100 mV & 600 mV range; ±0.1% of range
DC current measurement typical accuracy: 1000 uA & 10 mA range; ±0.3% of range
10 A range; ±0.7% of range
Note: If used in close proximity to an RF transmitter or when subjected to continuously present
electromagnetic phenomena, some recoverable degradation of performance may occur.
Ingress protection rating IP-67, protected against dust and the effect of immersion between 15 cm and 1 m
Temperature coefficient 0.05 x (specified accuracy)/°C (from –20°C to 18°C or 28°C to 55°C)
Common mode rejection ratio (CMRR) > 120 dB at DC, 50/60 Hz ±0.1% (1 kΩ unbalanced)
Normal mode rejection ratio (NMRR) > 60 dB at 50/60 Hz ±0.1%
Dimensions (H x W x D) 198 x 96 x 57 mm
Weight 545 grams (with batteries)
Warranty Three years for main unit. Three months for standard shipped accessories
Calibration cycle One year, or; Two years (with 1.5 times of one year specification)
Specification assumptions
– Accuracy is given as ±(% of reading + counts of least significant digit) at 23°C ±5°C, with relative humidity less than 80% R.H.
– Accuracy is specified for 1-year after calibration, at operating temperature of room temperature. Multiply 1.5 times of the accuracy
for 2-year after calibration, example ±(1.5 x% of reading + 1.5 x counts of least significant digit).
– AC V/mV and AC µA/mA/A specifications are AC coupled.
– True RMS measurement is valid from 5% of range to 100% of range.
– For non-sinusoidal waveforms, add (0.5% of reading +0.3% of full scale) typically
– The crest factor may be up to 3.0 at full scale except for the 1000 V and 600 mV ranges where these ranges are 1.5 at full scale.
– Specification is based on 5 times/second of data refresh rate
– CMRR and NMRR are based on 5 times/second of data refresh rate
– After Z
LOW
voltage measurement, wait for at least 20 minutes to cool down thermal impact before making next measurement.