7

General Specifications

Display

Liquid crystal display (LCD) (with maximum reading of 33000 counts)

Power consumption

460 mVA maximum (with backlight enabled)

Battery Type

• 4 × 1.5 V Alkaline battery (ANSI/NEDA 24A or IEC LR03), or

• 4 × 1.5 V Zinc Chloride battery (ANSI/NEDA 24D or IEC R03)

Battery Life

• 300 hours typical (based on new Alkaline batteries for dc voltage measurement)

• Low battery indicator will flash when the battery voltage drops below 4.4 V (approximately)

Fuse

• 10 × 35 mm 440 mA/1000 V 30 kA fast-acting fuse

• 10 × 38 mm 11 A/1000 V 30 kA fast-acting fuse

Operating Environment

• Operating temperature from –20 to 55 °C, 0 to 80% RH

• Full accuracy up to 80% RH for temperatures up to 30 °C, decreasing linearly to 50%

RH at 55 °C

• Altitude up to 2000 meters

• Pollution degree II

Storage Compliance

–40 to 70 °C, 0 to 80% RH

Safety Compliance

• CAN/CSA-C22.2 No. 61010-1-04

• EN/IEC 61010-1:2001

• ANSI/UL 61010-1:2004

Measurement Category

CAT III 1000 V/ CAT IV 600 V

Electromagnetic Compatibility

(EMC)

Commercial limits compliance with EN61326-1

Ingress Protection Rating

IP-54

Temperature Coefficient

0.05 × (specified accuracy) / °C (from –20 to 18 °C, or 28 to 55 °C)

Common Mode Rejection Ratio

(CMRR)

>120 dB at DC, 50/60 Hz ± 0.1% (1 kΩ unbalanced)

Normal Mode Rejection Ration

(NMRR)

>60 dB at 50/60 Hz ± 0.1%

Dimensions (W x H x D)

92 × 207 × 59 mm

Weight

• U1271A: 518 grams (with batteries)

• U1272A: 520 grams (with batteries)

Warranty

• Three years for product

• Three months for product’s accessories

Calibration Cycle

One year

Specification Assumptions

•

Accuracy is given as ±(% of reading + counts of least significant digit) at 23 °C ± 5 °C, with relative humidity less than 80% RH.

•

AC V and AC μA/mA/A specifications are ac coupled, true RMS and are valid from 5% of range to 100% of range.

•

The crest factor may be up to 3.0 at full- scale except for the 1000 V range where it is 1.5 at full scale.

•

For non- sinusoidal waveforms, add (2% reading + 2% full scale) typical, for crest factors up to 3.

•

After Z

LOW

voltage measurements, wait at least 20 minutes for thermal impact to cool before proceeding with any other measurement.