Datasheet

Input Specications
Temperature specications
Thermocouple type Range Resolution Accuracy
1
Overload protection
K
–40 °C to 1372 °C 0.1 °C 0.3% + 3 °C
250 Vrms
–40 °F to 2502 °F 0.1 ºF 0.3% + 6 °F
1. Accuracy is specied for meter operation only, excludes thermocouple probe tolerance and with the instrument placed in the operating area for at least one
hour.
Resistance specications
Range Resolution Accuracy Minimum input current Overload protection
500 W 0.01 W 0.15% + 8
2
0.45 mA
250 Vrms
5 kW 0.1 W
0.15% + 5
2
0.45 mA
50 kW 1 W 45 µA
500 kW 10 W 4.5 µA
5 MW 0.1 kW 450 nA
50 MW
1 kW
1% + 8
3
45 nA
2. Accuracy is specied after applying the Relative function to offset any test lead resistance and thermal effect.
3. Accuracy is specied for < 60% R.H.
Diode and continuity specications
For diode test, the overload protection is 250 Vrms and the instrument will beep when the reading is below 50 mV (approximately). For
continuity test, the instrument will beep when the resistance is less than 10.00 Ω.
Resolution Accuracy Test current Open voltage
0.1 mV 0.05% + 5 Approximately 0.45 mA < +4.8 VDC
1 ms peak hold specications
Signal width Accuracy for DC mV/voltage/current
Single event > 1 ms 2% + 400 for all ranges
05 | Keysight | U1401B Handheld Multi-function Calibrator/Meter - Data Sheet