66 U1241A/U1242A User’s and Service Guide
6 Specifications and Characteristics
General Characteristics
Table 6 - 26 General characteristics of U1241A and U1242A
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
°
C
Storage Environment
• –20 °C to 70 °C
Altitude
• 0 – 2000 meters per IEC 61010-1 2
nd
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-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
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