Page 7 - PHU_User Manual_EN_Rev A

SAFETY INSTRUCTIONS

 Temperature: 0 °C to 50 °C

 Mains supply voltage fluctuations: +/-10 %
 Overvoltage category: OVC II
 If the equipment is used in a manner not
specified by the manufacturer, the protection
provided by the equipment may be impaired.
 LAN, RS232/RS485, USB, and GPIB ports are
only to be connected to the circuits which are
separated from mains supply by double /
reinforce insulation.

(Pollution Degree) EN61010-1and EN61010-2-030 specifies the
pollution degrees and their requirements as follows. The PHU falls
under degree 2.
Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.
 Pollution degree 1: No pollution or only dry, non-conductive
pollution occurs. The pollution has no influence.
 Pollution degree 2: Normally only non-conductive pollution
occurs. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
 Pollution degree 3: Conductive pollution occurs, or dry, non-
conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment
is normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature
nor humidity is controlled.
Storage  Location: Indoor
environment  Temperature: -25 °C to 70 °C

 Relative Humidity: ≤90%(no condensation)
Disposal Do not dispose this instrument as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased. Please make sure
discarded electrical waste is properly recycled to
reduce environmental impact.

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