Manual BVS 19 ATEX E 080 X
23
Edition March 2020
thuba Ltd., CH-4002 Basel
Copyright
Switzerland
own or he can use the automatic calculation in
the menu of the PS 830 (see also section 5.6.1)
Example:
The inflow Q
Example
of air through a nozzle with
an inner diameter of 2 mm and an admission
pressure of 2 bar is ca. 1.5 l/s:
3.3 Operation mode “Leakage compen -
sation”
The PS 830 works after the pre purging phase
or without pre purging phase immediately after
the voltage supply in the mode of operation
"leakage compensation".
In this mode of operation will maintain after an
overpressure (at least 0.8 mbar) within the Ex p
cabinet. This cabinet minimum pressure as well
as also a cabinet maximum pressure are pro-
grammable and are monitored constantly.
Leakage losses are compensated by a small
bypass. This bypass is integrated in the valve
and mechanically adjustable (diameter 0.3... 1
mm).
3.4 Conformity with standards
The explosionproof control unit PS 830 meets
the requirements of IEC 60079-0, IEC 60079-15
or IEC 60079-31. They have been developed,
manufactured and tested in accordance with
state-of-the-art engineering practice and ISO
9001:2015.
Summary of Contents for PS 830
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