Datasheet

Electrical Specifications for U1212A
Accuracy is given as ± (% of reading + number of least significant digits) at 23 °C ± 5 °C, with relative humidity less than
80 % R.H.
ACV/ ACA specifications are ac coupled, true R.M.S. and are valid from 5 % of range to 100 % of range. The crest factor
may be up to 3.0 at full-scale except the 1000 V and 1000 A ranges where these are 1.5 at full scale. For non-sinusoidal
waveforms, add (2 % reading + 2 % full scale) typical, for crest factors up to 3.
DC voltage
Range Resolution Accuracy Overload protection
400 V 0.1 V 0.5 % + 3
1000 V R.M.S
1000 V 1 V 0.5 % + 3
– Input impedance: 10 MΩ (nominal)
AC voltage
Range Resolution
Accuracy
Overload protection
45~400 Hz
400 V 0.1 V 1 % + 5
1000 V R.M.S
1000 V 1 V 1 % + 5
– Input impedance: 10 MΩ (nominal) in parallel with < 100 pF
Voltage (1 ms peak hold)
Range Resolution Accuracy Overload protection
400 V 0.1 V 1 % + 43
1000 V R.M.S
1000 V 1 V 1 % + 43
– Specified accuracy for changes > 1 ms in duration
Diode check/audible continuity test
Range Resolution Accuracy Test current Open voltage
Diode 0.001 V 0.5 % + 2 Approximately 0.8 mA < +3.1 V
– Overload protection: 1000 V R.M.S. for circuits < 0.3 A of short circuit current
– Built-in buzzer sounds when reading is below 50 mV approximately and single tone for normal forward-biased diode
or semiconductor junction as 0.3 V ≤ Reading ≤ 0.8 V
Resistance
Range Resolution Accuracy Test current
400 Ω 0.1 Ω 0.5 % + 3 0.8 mA
4 kΩ 0.001 kΩ 0.5 % + 3 80 µA
Notes:
1. Overload protection: 1000 V R.M.S. for circuits < 0.3 A of short circuit current
2. Maximum open voltage: < +3.1 V
3. Instant continuity: Built-in buzzer sounds when resistance is less than 10.0 Ω
4. The accuracy of 400 Ω and 4 kΩ is specified after Relative function, which is used to substrate the test lead resistance and the thermal effect
09 | Keysight | U1210 Series Handheld Clamp Meters – Data Sheet