S+S Regeltechnik PREMASREG 711x-VA Series Operating Instructions, Mounting & Installation page 12

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PREMASREG 711x - VA
Mounting diagram
(A)
Conversion table for pressure values:
Unit =
1 Pa
1 kPa
1 bar
1 mbar
1 mH O
0.0980665 bar
2
(B)
bar
0.00001 bar 0.01 mbar
0.01 bar 10 mbar
1 bar 1000 mbar
0.001 bar
98.0665 mbar
(C)
mbar
1 Pa
1000 Pa
100000 Pa
1 mbar 100 Pa
9806.65 Pa
12
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.
Pa kPa
0.001 kPa
1 kPa
100 kPa
0.1 kPa
9.80665 kPa
mH O
2
0.000101971 mH O
2
0.101971 mH O
2
10.1971 mH O
2
0.0101971 mH O
2
1 mH O
2