Schmidt
Mess- und Regeltechnik
©2014 Schmidt
Mess- und Regeltechnik
Fon 0 67 32 - 91 91 20 Fax 0 67 32 - 96 24 42 [email protected]
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Only experts may operate the devices.
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Fasteners are to be re-attached after opening.
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The operation of the device is permitted only with entirely mounted and undamaged housing.
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The potential equalisation is connected with its own screw on the metallic pipe system.
National regulations have to be taken into consideration.
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The devices have to be protected against ingress of liquids and dirt.
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The devices mainly consist of stainless steel and brass. External impacts should be avoided.
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During operation the device may only be exposed to minor vibrations. Please ask the supplier
if you are not sure.
8.5 Range of use
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The devices are approved only for appropriate use as directed. Non-compliance voids any
claim on warranty and responsibility of the manufacturer!
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Only those equipment parts which fulfil all demands of the European guidelines and national
legislation are allowed to be used in explosion endangered areas.
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The specified ambient conditions stated in the operation manual must be strictly adhered to.
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The devices are suitable for use in normal industrial atmospheres. If there are any aggressive
substances in the air the manufacturer has to be consulted implicitly.
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Sticking parts, e.g. due to corrosion, are not allowed to be removed violently in an EX-
atmosphere.
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Protection measures against lightning are to be ensured by the operator.
8.6 Repair and maintenance
Definition of terms according to IEC 60079-17:
Service and repair
: A combination of all activities that are carried out in order to keep an
object in a condition or to repair it, that it meets the demands of the corresponding
specification and that guarantees the execution of the required functions.
Inspection
:
An occupation which includes the careful examination of an object in order to get a
reliable statement about the condition of this object. This activity is carried out without
dismantling or, if necessary, with partly dismantling, completed by measures as e.g.
measuring.
Visual examination
: A visual examination is an examination to locate viewable defects, e.g.
missing screws, without the use of access installations or tools.
HENKE SASS WOLF GMBH
Further important facts:
8.4 Installation and operation
The devices have to be installed in a higher-level assembly. Depending on the degree of IP
protection, the time of cleaning the device (dust deposit) has to be defined. It is important to
ensure that only the device ignition protection class according to the corresponding zone is
installed! It is imperative to adhere to valid national device regulations (for example EN 60079-
14) during installation.
Operation Manual
Flowmeter / Flow Control DW-U
Flow monitor after the baffle plate principle for liquids
