Technical data

Specifications and Characteristics 6

U1241B/U1242B User’s and Service Guide 69

General Characteristics

Table 6-15 General characteristics of U1241B and U1242B

Power Supply

• 4 single standard 1.5 V AAA batteries (Alkaline or Zinc Chloride type)

Display

• Dual display (secondary display is cater for temperature function display only) are 4-digit

liquid crystal display (LCD) with maximum reading of 11,000 counts. Automatic polarity

indication.

Power Consumption

• 0.22 VA maximum

Operating Environment

• Full accuracy at –10 °C to 55 °C

•

Full accuracy to 80% R.H. for temperature up to 30

C, decreasing linearly to 50% R.H. at 55

Storage Environment

• –20 °C to 70 °C, with battery removed

Altitude

• 0 – 2000 meters per IEC 61010-1 2

Edition CAT III, 1000 V/ CAT IV, 600 V

Safety Compliance

• IEC 61010-1:2001 / EN61010-1:2001

• USA: UL 61010-1:2004

• Canada: CSA C22.2 No. 61010-1:2004

Measurement Category

• CAT III, 1000 V/ CAT IV, 600 V Overvoltage Protection, Pollution degree 2

EMC Compliance

• Certified to IEC 61326-1:2005/ EN 61326-1:2006

• Canada: ICES/NMB-001:2004

• Australia/New Zealand: AS/NZS CISPR11:2004

Common Mode Rejection Ratio (CMRR)

• > 90 dB at DC, 50/60 Hz ±0.1% (1 kW unbalanced)

Normal Mode Rejection Ratio (NMRR)

• > 60 dB at 50/60 Hz ±0.1%

Temperature Coefficient

• 0.1 × (specified accuracy) / °C (from –10 °C to 18 °C or 28 °C to 55 °C)

Crest Factor

• ≤ 3.0

Shock and Vibration

• Tested to IEC/EN 60068-2

Dimension (HxWxD)

• 193.8 mm x 92.2 mm x 58 mm