Datasheet

G
Mounting and Installation
Rev. 2017 - V12 GB
TYPES OF MONITORING:
(A) Below-atmospheric pressure:
P1(
+
) is not connected but open against atmosphere
P2(
) connected to inside of duct
(B) Filter:
P1(
+
) connected upstream of filter
P2(
) connected downstream of filter
(C) Ventilator:
P1(
+
) connected downstream of ventilator
P2(
) connected upstream of ventilator
Pressure connections at the pressure switch are marked with
P1(
+
) for higher pressure and P2(
) for lower pressure.
Specifications regarding switching pressures relate
to vertical mounting and it is recommended to install
the connections downward.
In case of vertical mounting with pressure connections
upward, the switch-on value increases by 0.2 mbar.
Connection P1 for
higher pressure or less below-atmospheric pressure.
Connection P2 for
lower pressure or more below-atmospheric pressure.
Electrical connections:
Contacts 1 - 2 break when pressure ⁄ differential
pressure rises to the preset value.
Simultaneously, contacts 1 - 3 close and
can be used as signal contact.
Mounting diagram
DS 1
+
P1
+
P1
+
P1
P2
P2
P2
(A) (B) (C)
Connecting diagram
DS 1
1 3 2
P
Pressure>switch-on
value (high pressure)
No pressure,
(pressure dropping
below preset
switch-off value)
Connection
DS 1
Connecting terminals
secured against turning
Setting potentiometer
(internal setting)
Conversion table for pressure values:
Unit =
bar mbar Pa kPa mH
2
O
1 Pa
0.00001 bar 0.01 mbar 1 Pa 0.001 kPa 0.000101971 mH
2
O
1 kPa
0.01 bar 10 mbar 1000 Pa 1 kPa 0.101971 mH
2
O
1 bar
1 bar 1000 mbar 100000 Pa 100 kPa 10.1971 mH
2
O
1 mbar
0.001 bar 1 mbar 100 Pa 0.1 kPa 0.0101971 mH
2
O
1 mH
2
O
0.0980665 bar 98.0665 mbar 9806.65 Pa 9.80665 kPa 1 mH
2
O