U1242C Datasheet, PDF (8/15 Pages) Keysight Technologies – U1240 Series Handheld Digital Multimeters

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General specifications
Display
Power consumption
Battery type
Battery life
Connectivity
Fuse
Operating environment
Storage compliance
Safety compliance
Measurement category
Electromagnetic compatibility (EMC)
Ingression protection rating
Temperature coefficient
Common mode rejection ration (CMRR)
Normal mode rejection ratio (NMRR)
Dimensions (H x W x D)
Weight
Warranty
Calibration cycle
4 ½-digit liquid crystal display (LCD) with maximum reading of 11,000-count
Automatic polarity indication
530 mVA maximum with backlight and flashlight.
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)
400 hours typical based on new alkaline batteries for DC voltage measurement
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)
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
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
-40 0C to 70 °C, 0 to 80 % R. H. (with battery removed)
EN/IEC 61010-2-030: 2010
EN/IEC 61010-1: 2010
CAT III 1000 V / CAT IV 600 V
Susceptibility and emissions: commercial limits per EN/IEC 61326-1
IP-67, protected against dust and the effect of immersion between 15 cm and 1 m
0.05 x (specified accuracy) / °C (from –20 °C to 18 °C or 28 °C to 55 °C)
> 120 dB at DC, 50/60 Hz ± 0.1 % (1 kΩ unbalanced)
> 60 dB at 50/60 Hz ± 0.1%
198 x 96 x 57 mm
545 grams (with batteries)
Three years for main unit
Three months for standard shipped accessories
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.