VI U1253B User’s and Service Guide
Environmental Conditions
This instrument is designed for indoor use and in areas with low
condensation. The table below shows the general environmental
requirements for this instrument.
Environmental conditions Requirements
Operating temperature Full accuracy from –20 °C to 55 °C
Operating humidity Full accuracy up to 80% R.H. (relative
humidity) for temperature up to 35 °C,
decreasing linearly to 50% R.H. at 55 °C
Storage temperature –40 °C to 70 °C (with battery removed)
Altitude Up to 2000 m
Pollution degree Pollution Degree 2
The U1253B True RMS OLED Multimeter complies with the following
safety and EMC requirements.
• IEC 61010-1:2001/EN61010-1:2001 (2nd Edition)
• Canada: CAN/CSA-C22.2 No. 61010-1-04
• USA: ANSI/UL 61010-1:2004
• IEC61326-1:2005 / EN61326-1:2006
• Canada: ICES/NMB-001:Issue 4,June 2006
• Australia/New Zealand: AS/NZS CISPR11:2004
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