Putting Into Operation - PKP DND01.01 Series Instruction Manual

Putting into operation

As with any fine instrument, care must be taken in the installation. Your particular meter
may be of special design and may require special information, however, these tips cover
several points of concern with all models.
Please verify the following prior to installation and operation.
— Has the piping system been cleaned and is free
of any dirt and particles?
— Has a strainer been installed at the inlet of the
meter? (only for P series)
— Is mounting position as per requirement?
— Is flow direction in accordance with the arrow
marking?
— Is operating flow within specifications? (The
maximum specified flow rate is an instrument
maximum design flow rate and is not
recommended for continuous operation. For
optimum performance a continuous flow rate
should not exceed 65% of design maximum)
— Is material compatibility verified and confirmed? 
— Is operating pressure within limits?
— Have measures been taken, in case of low
viscous fluids, that the pressure drop across
the meter does not exceed 1.0 bar?
— Is operating temperature within limits?
— Have measures been taken to avoid pressure
shocks? In case a solenoid valve is used in
connection with very frequent switching cycles,
the valve should be mounted on the inlet of the
meter. To maintain full pipe conditions a non-
return valve may be mounted at the outlet.
— Does wiring comply with attached wiring
diagram?
— Have you carefully read the operating manual? 
Begin start-up only once you have answered all questions with YES.
When putting into operation, always open the upstream valve slowly to apply with the fluid
pressure of the meter and avoid any pressure shocks.
Please make sure that the following parameters are always observed:
a) Maximum operating pressure is 16 bar for the M-series and 10 bar for the P-series.
b) Maximum operating temperature is 50 °C for plastic meters and 120 °C for
bronze meters with LCP chamber.
c) Meters must always be operated within the specified flow range.
d) Maximum pressure drop across the meter is 1 bar for low viscous fluids and 3,4 bar
for liquids up to maximum 800 mPas.
DND01 Instruction manual 03/2023
Yes No
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