Mettler Toledo 52 300 411 Instructions D'utilisation page 8

8
– The safety of personnel as well as of the plant itself is ultimately
the responsibility of the plant opera- tor. This applies in particular
in the case of plants operating in hazardous zones.
– The pH sensor simulators and associated components have no
effect on the process itself and cannot influence it in the sense of
any form of control system.
– Where specific safeguards such as locks, labels, or redundant
measuring systems are necessary, these must be provided by the
plant operator.
– A defective simulator must neither be installed nor put into service.
– No modifications to the simulators and the accessories are
allowed. The manufacturer accepts no responsibility for damages
caused by unauthorized modifications. The risk is borne entirely
by the user.
– When using cables for simulator connection not supplied and
recommended by the manufacturer the following standards need
to be considered:
• US National Electrical Code
where applicable.
• Canadian Electrical (CE) Code
CAN/CSA-C22.1), where applicable.
– For guidance on US installations, see ANSI/ISA-RP12.06.01,
Installation of Intrinsically Safe Systems for Hazardous (Classi-
fied) Locations.
– Control room equipment connected to intrinsically safe associated
apparatus in the US should not use or generate more than the
specified Um of the associated apparatus.
– Care must be taken during installation to avoid impacts or friction
that could create an ignition source.
– Tampering and replacement with non-factory components may
adversely affect the safe use of the system.
pH ISM Qualification Kit
52 300 439 E
®
(ANSI/NFPA 70 [NEC
®
(CEC Part 1,
© 12/2018 Mettler-Toledo GmbH, Greifensee
pH ISM Qualification Kit
®
]),
Printed in Switzerland