Bartec APEXmv 07-37A2-2211 730 Series Operating Instructions Manual page 50

Ex p Control unit
APEX mv
7.8.1.2 Pressure parameter
7.8.1.3 Characteristic
Rev. 0
The system pressures of the Ex p equipment are defined in the "Pressure
parameter" submenu.
p4 = Maximum pressure, operation. Depending on the selection of the purge
program, there is a shutdown or message.
p5 = Maximum pressure, purge. Depending on the selection of the purge
program, there is a shutdown or message.
DANGER
INCORRECT PARAMETERIZATION OF THE SYSTEM COMPONENTS IN THE EX P
CONTROL UNIT.
The purge process takes place with too low purge gas flow and there is a risk of
residual explosive gases within the Ex p equipment.

Check type and set characteristic
Selection table
Parameter
Characteristic 1
01-37A2-7D0005_MV_Manual_Exp-Control-Unit_2021005_0_en.docx
Operation
po = Operating pressure. Pressure
value at which control takes place
during the operating phase.
p1 = Minimum pressure. Shut-off
value; if the pressure falls below this
value, the enable is reset.
p2 = Pre-alarm. Value at which an
alarm can be given before shutdown.
p3 = Purge pressure. Purge time starts
when the set point is exceeded.
For automatic purge time
determination, the characteristics of
the pressure switch in the system
must be set in the Ex p control unit.
Measuring orifice
mv
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