Heinrichs Messtechnik GmbH
Page 10 of 28
Operating Manual K09
7
Conditions of use
The VDI/VDE guidelines must be observed.
The devices can be used for:
-
liquid products that are sufficiently free-flowing, are free of solids, do not bond or do not tend
to settle.
-
gases with linear flow behaviour and an adequate inlet pressure.
V/N(optional differential pressure regulator)
The minimum differential inlet and outlet pressures must amount to 350 mbar.
Please refer to the instructions for potentially hazardous products in Section 2.2.
7.1
Safe operation
7.1.1
General conditions for safe operation
a) If the conditions described in this document are not adhered to, or if there is any inappropriate
interference with the equipment, all the manufactures warranties shall be considered void.
b) Conditions described in this manual, as well as the permitted operating conditions which have
been defined for the sensor and which are stated on the rating plates must be adhered to.
c) Appropriate measures shall be met to prevent any unintentional or inadmissible damage to the
device.
d) The operator shall ensure that the equipment is only installed in areas which comply with the
approved types of protection and environments.
e) All connected electrical equipment must be suitable for its intended use.
f) The operator shall ensure protection against lightning according to local regulations.
g)
The flowmeter is maintenance-free.
7.1.2
Requirements for installation in all environments
a) The installation of the intrinsically safe circuits requires a control drawing (system description), to
be issued by the operator/erector.
b) The equipment is only to be installed and connected in a de-energized state.
c) It is to be insured that intrinsically safe circuits are not laid together with non-intrinsically safe
circuits.
d) Seized screws or adhering joints (e.g. by frost or corrosion) are not to be opened with force in the
presence of a potentially explosive atmosphere.
e) Where substances of explosion group
“IIC” or “A” are present and the presence of an Ex-
atmosphere is considered possible, only non-sparking tools shall be used.
