Cubemass DCI MODBUS RS485 Safety instructions
Endress+Hauser 5
1 Safety instructions
1.1 Designated use
The measuring device described in these operating instructions may only be used for measuring the
mass flow of liquids. At the same time, the system also measures fluid density and fluid temperature.
These parameters are then used to calculate other variables such as volume flow. Fluids with widely
differing properties can be measured.
Resulting from incorrect use or from use other than that designated the operational safety of the
measuring devices can be suspended. The manufacturer accepts no liability for damages being
produced from this.
1.2 Installation, commissioning and operation
Note the following points:
• Installation, connection to the electricity supply, commissioning and maintenance of the
measuring device must be carried out by trained, qualified specialists authorized to perform such
work by the facility's owner-operator. The specialist must have read and understood these
Operating Instructions and must follow the instructions they contain.
• The device must be operated by persons authorized and trained by the facility's owner-operator.
Strict compliance with the instructions in the Operating Instructions is mandatory.
• Endress+Hauser will be happy to assist in clarifying the corrosion resistance properties of materials
wetted by special fluids, including fluids used for cleaning. However, small changes of
temperature, concentration or degree of contamination in the process can result in differences in
corrosion resistance. Therefore, Endress+Hauser provides no warranty and assumes no liability
with regard to corrosion resistance of fluid wetted materials in an application. The user is
responsible for choosing suitable fluid wetted materials in the process.
• If welding work is performed on the piping system, do not ground the welding appliance via the
measuring device.
• The installer must ensure that the measuring system is correctly wired in accordance with the
wiring diagrams. The transmitter must be grounded, except in cases where special protective
measures have been taken, e.g. galvanically isolated power supply SELV or PELV! (SELV = Safety
Extra Low Voltage; PELV = Protective Extra Low Voltage).
• Invariably, local regulations governing the maintenance and repair of electrical devices apply.
1.3 Operational safety
Note the following points:
• Measuring systems for use in hazardous environments are accompanied by separate "Ex
documentation", which is an integral part of these Operating Instructions. Strict compliance with
the installation instructions and ratings as stated in this supplementary documentation is
mandatory. The symbol on the front of this supplementary Ex documentation indicates the
approval and the inspection body (0 Europe, NEC/CEC
1)
, NEPSI).
• The measuring device complies with the general safety requirements in accordance with
EN 61010, the EMC requirements of IEC/EN 61326, and NAMUR recommendations NE 21, 43
and 53.
• Depending on the version, the housing of the sensor can be equipped with a rupture disk to
prevent the pressure in the sensor housing from increasing in the event of an error.
As long as the adhesive label (→ å 4) is intact, the rupture disk is also intact.
• For measuring systems used in SIL 2 applications, the separate manual on functional safety
(SD077D/06) must be observed.
• The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser representative will supply you with current information and any updates to these
Operating Instructions.
1) NEC (National Electrical Code) / CEC (Canadian Electrical Code)
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