Information

12 | Keysight | U1280 Series Handheld Digital Multimeters – Data Sheet

Temperature specification for U1281A / U1282A

2,3,4,5,6,7

Thermal type Range Resolution Accuracy ± (% of reading +

as specified below)

–200 °C to 1372 °C 0.1 °C 1 % + 1 °C

–328 °F to 2502 °F 0.1 °F 1 % + 1.8 °F

–210 °C to 1200 °C 0.1 °C 1 % + 1 °C

–346 °F to 2192 °F 0.1 °F 1 % + 1.8 °F

Notes

1. Only for U1282A

2. The specification above is specified after 60 minutes of warm-up time.

3. The accuracy does not include the tolerance of the thermocouple probe.

4. Do not allow the temperature sensor to contact a surface that is energized about 30 Vrms or 60 V DC.

Such voltages pose a shock hazard.

5. Ensure the stable (within ± 1 °C) ambient temperature,and that the Null function is used to reduce the

test lead’s thermal effect and temperature offset. Before using Null function, set the multimeter to

measure temperature without ambient compensation (°C) and keep the thermocouple probe as close

to the multimeter as possible (avoid contact with any surface that has a different temperature from

the ambient temperature).

6. When measuring temperature with respect to any temperature calibrator, try to set both the

calibrator and multimeter with an external reference (without internal ambient compensation). If both

the calibrator and multimeter are set with internal reference (with internal ambient compensation),

some deviations may show between the readings of the calibrator and multimeter, due to differences

in ambient compensation between the calibrator and multimeter. Keeping the multimeter close to the

output terminal of calibrator will help reduce the deviation.

7. The temperature calculation is specified according to the safety standards of EN/IEC-60548-1 and

NIST 175.

Capacitance specification for U1281A / U1282A

1,2,3

Range Resolution Accuracy ± (% of reading +

counts of least significant digit)

10 nF 0.001 nF 1.0 % + 5

100 nF 0.01 nF 1.0 % + 5

1 µF 0.0001 µF 1.0 % + 5

10 µF 0.001 µF 1.0 % + 5

100 µF 0.01 µF 1.0 % + 5

1 mF 0.0001 mF 1.0 % + 5

10 mF 0.001 mF 1.0 % + 5

100 mF 0.01 mF 2.5 % + 10

Notes

1. Overload protection: 1000 Vrms for short circuits with < 0.3 A current.

2. The accuracy for all ranges is specified based on a film capacitor or better, and after the Null

function is used to subtract the test lead resistance and thermal effect (by shorting the test leads).

3. The maximum display is 1200 counts / 12000 counts selectable