Datasheet

7
General Specifications
Display • U1271A and U1272A: Liquid crystal display (LCD) (with maximum reading of
33,000counts)
• U1273A/U1273AX: Organic LED (OLED) display (with maximum reading of
33,000counts)
Power consumption • U1271A/U1272A: 460 mVA maximum (with backlight enabled)
• U1273A/U1273AX: 180 mVA maximum (with maximum brightness)
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)
• 4 × 1.5 V Lithium battery (ANSI/NEDA 24LF or IEC FR03)
Battery life • U1271A and U1272A: 300 hours typical (based on new Alkaline batteries for DC
voltage measurement)
• U1273A/U1273AX:
◦ Based on new Alkaline batteries for DC voltage measurement:
30/45/60 hours typical at High/Medium/Low brightness, respectively
◦ Based on new Lithium batteries for DC voltage measurement:
50/100 hours typical at High/Low brightness, respectively
• Low battery indicator will flash when the battery voltage drops:
◦ For non-rechargeable batteries: 4.4 V (approximately)
◦ For rechargeable batteries: 4.5 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:
◦ U1271A/ U1272A/U1273A: –20 to 55 °C, 0% to 80% RH
◦ U1273AX: –40 to 55 °C, 0% to 80% RH (using Lithium batteries)
• Full accuracy up to 80% RH for temperatures up to 30 °C, decreasing linearly to
50% RH at 55 °C
• Altitude up to 3000 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 U1271A/U1272A/U1273A: 0.05 × (specified accuracy)/°C (from –20 to 18°C, or 28 to 55°C)
U1273AX: 0.05 x (specified accuracy/ °C (from –40 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)
• U1273A: 500 grams (with batteries)
• U1273AX: 500 grams (with batteries)
Warranty • Three years for product
• Three months for product’s accessories
Calibration cycle One year