5

Electrical Specifications

Temperature specifications

Thermal type

Range

Resolution

Accuracy± (% of reading +

counts of least significant digit)

U1233A

K

–40 °C to 1372 °C

0.1 °C

1% + 1 °C

–40 °F to 2502 °F

0.1 °F

1% + 1.8 °F

Notes:

1. The specification above is specified after 60 minutes of warm up time. If the unit is exposed during storage in high humidity (condensing)

environment, 120 minutes of operating time is required instead.

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 poses 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 as possible to the multimeter (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, This difference is caused from the calibrator and multimeters’s

ambient compensation. The deviation can be reduced by keeping the multimeter close to the output terminal of calibrator.

6. The temperature calculation is specified according to the safety standards of EN/IEC-60548-1and NIST175.

7. The approximate ambient temperature (cold-junction compensation) is shown on the display when you have an open thermocouple. The open

thermocouple message may be due to broken (open) probe or because no probe is installed into the input jacks of the multimeter.

Frequency specifications

Range

Resolution

Accuracy± (% of reading +

counts of least significant digit)

Minimum input frequency

U1231A/U1232A/U1233A

99.99 Hz

0.01 Hz

0.1% + 2

5 Hz

999.9 Hz

0.1 Hz

0.1% + 2

9.999 kHz

1 Hz

0.1% + 2

99.99 kHz

10 Hz

0.1% + 2

Notes:

1. Overload protection: 600 V; input signal is < 20,000,000 V × Hz (product of voltage and frequency).