U1271A Datasheet, PDF (15/22 Pages) List of Unclassifed Manufacturers – U1270 Series Handheld Digital Multimeters

Electrical Specifications
Temperature specifications^{1 - 6}
Thermocouple
type
K
J
Range
–200 to 1372 °C
–328 to 2502 °F
–210 to 1200 °C
–346 to 2192 °F
Resolution
0.1 °C
0.1 °F
0.1 °C
0.1 °F
U1271A
1% of reading
+ 1 °C
1% of reading
+ 1.8 °F
—
—
Accuracy ± (% of reading +
as specified below)
U1272A
1% of reading
+ 1 °C
1% of reading
+ 1.8 °F
1% of reading
+ 1 °C
1% of reading
+ 1.8 °F
U1273A/U1273AX
1% of reading
+ 1 °C
1% of reading
+ 1.8 °F
1% of reading
+ 1 °C
1% of reading
+ 1.8 °F
1. The specifications above is specified after 60 minutes of warm-up time.
2. The accuracy does not include the tolerance of the thermocouple probe.
3. Do not allow the temperature sensor to contact a surface that is energized above 30 Vrms or 60 V DC. Such voltages pose a shock hazard.
4. Ensure that the ambient temperature is stable within ±1 ºC 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).
5. 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.
6. The temperature calculation is specified according to the safety standards of EN/IEC-60548-1 and NIST175.
Capacitance specifications^{7, 8}
Range
10 nF
100 nF
1000 nF
10 μF
100 μF
1000 μF
10 mF
Resolution
0.001 nF
0.01 nF
0.1 nF
0.001 μF
0.01 μF
0.1 μF
0.001 mF
U1271A
1+5
1+2
1+2
1+2
1+2
1+2
1+2
Accuracy ± (% of reading +
counts of least significant digit)
U1272A
1+5
1+2
1+2
1+2
1+2
1+2
1+2
U1273A/U1273AX
1+5
1+2
1+2
1+2
1+2
1+2
1+2
7. Overload protection: 1000 Vrms for short circuits with < 0.3 A current.
8. 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).
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