Seaward ARE 1557 - Manual (Page 27)

ERT1557
Operating Instructions
- 27 -
9 Environmental Conditions
9.1 The ERT 1557 has been designed to perform tests
and measurements in a dry environment.
9.2 Maximum barometric elevation for making
measurements is 2000M.
9.3 Overvoltage category IEC 60664/IEC 61010, 300V
Category II.
9.4 Pollution degree 2 according to IEC 61010-1.
9.5 Protective system IP40 according to IEC 60529.
9.6 Electromagnetic compatibility (EMC). Interference
immunity and emitted interference conforming to
IEC 61326-1.
9.7 Operating temperature range of 0°C to 40°C,
without moisture condensation.
9.8 The ERT 1557 can be stored at any temperature in
the range -25°C to +65°C (relative humidity up to
90%). The batteries should be taken out of the
instrument for storage.
9.9 Operating Altitude 0 to 2000 metres