Kobold ZOK-E1, Дополнительные инструкции по эксплуатации

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ZOK-Ex
page 4 ZOK-Ex K08/0322
4. Overview
The certified ZOK-Ex series is an indicator providing a display of flowrate,
accumulated total and resettable total for potentially explosive areas. It can be
loop powered, battery powered and/or dc powered via an approved associated
apparatus such as an intrinsically safety barrier.
In addition, when externally powered the certified ZOK-Ex series (not ZOK-E1)
provides one or more outputs (depending on model and configuration).
Further options are:

Dosing unit with one or two stage dosing using one or two opto-coupler
outputs with switching function (model ZOK-E2)

Supply via 4-20 mA current loop proportional to the flow (model ZOK-E3)
The optional alarm and/or pulse outputs must be driven each by a separate
associated device:

Low flow and high flow rate alarm (model ZOK-E5)

Scaled pulse output for remote totalisation (model ZOK-E5)
Note: The background lighting is deactivated in all ZOK-Ex electronics.
5. Mechanical Installation
(also refer to ZOK-Zx series Instruction
manual)
There are additional installation requirements to the Instruction Manual for
certified ZOK-Ex series instruments in accordance with the ESHR’s as defined in
annex II of the ATEX directive 2014/34/EU.
The ambient temperature must be within the limits -20 to +60 °C.
The electronic units must be installed in such a way that mechanical and thermal
stresses are avoided.
The instrument case is not considered to be an electrostatic risk; however,
the equipment must not be installed in a position where it may be subjected
to an excessive air flow or subjected to rubbing that may cause an
electrostatic build up. In addition, the instrument shall only be cleaned with
a damp cloth.
In all installation’s appropriate local rules, regulations and directives governing
instrument selection, installation practices and requirements must be followed.