Datasheet

5
ELECTRICAL SPECIFICATIONS FOR U1211A
Accuracy is given as ± % of reading +
no. of least signifi cant digits at 23 °C ±
5 °C, with relative humidity Less than
80 % R.H.
ACV/ ACA specifi cations 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 wave-
forms, add (2 % reading + 2 % full
scale) typical, for crest factors up to 3.
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 W
4. The accuracy of 400 W and 4 kW is specifi ed after Relative function, which is
used to substrate the test lead resistance and the thermal effect.
DC Voltage
Range Resolution Accuracy Overload Protection
400 V 0.1 V 0.5 %+5
1000 V R.M.S
1000 V 1 V 0.5 %+3
● Input Impedance: 10 MW (nominal).
Voltage (1ms 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
● Specifi ed accuracy for changes>1 ms in duration
RESISTANCE
Range Resolution Accuracy Test Current
400 W 0.1 W
0.5 %+3
0.8 mA
4 kW 0.001 kW
0.5 %+3
80 μA
DIODE CHECK/ AUDIBLE CONTINUITY TEST
Range Resolution Accuracy Test Current Open Voltage
Diode 0.001 V 0.5 %+2 Approx. 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 approx. and single
tone for normal forward-biased diode or semiconductor junction as 0.3 V≤
Reading ≤0.8 V.
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 MW (nominal) in parallel with <100 pF