S+S Regeltechnik PREMASREG 716 Serie Notice D'instruction page 12

G
®
PREMASREG 716x
Mounting diagram
(A)
(D)
TYPES OF MONITORING:
(A) Below-atmospheric pressure:
P1 (+) is not connected, but open to the 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
(D) Volume flow:
P1 (+) dynamic pressure, Connected in flow direction
P2 (–) static pressure, Connected free of dynamic pressure components
(E) Level:
P1 (+) Connection submerged in medium
P2 (–) Connection is open to the atmosphere
Pressure connections at the pressure switch are marked with
P1 (+) for higher pressure and
P2 (–) for lower pressure.
Measuring range mode
(Mode selectable)
Unidirectional ( 0 ...+MR ) (default)
Bidirectional (–MR ...+MR )
Measurement signal filtering
(Time interval selectable)
10 s (default)
1 s
(B)
(E)
DIP Small value suppression (measured
values < 1% of end value (pressure) = 0)
1
OFF Deactivated (default)
O N
Active
DIP
Service mode
5 (display adjustable)
OFF Standard (according to configuration) (default)
O N Service (differential pressure in Pa)
(C)
DIP
2
OFF
O N
DIP
6
OFF
O N
12
Rev. 2020 - V27 + ID20 - V12
Function types
Volume flow rate
V = k · √∆ p
V = Volume flow in m
k
= K factor 1...3000
∆ p = Differential pressure in Pa
Differential pressure
∆ p = p – p
+ –
∆ p = Differential pressure in Pa
p = higher pressure
+
p = lower pressure
–
Filter contamination
S = 100% · ∆ p ÷ p
S = Contamination degree in %
∆ p = Differential pressure in Pa
p
= differential pressure
Filter
filter replacement in Pa
Level display
h = ∆ p ÷ (ρ · g)
h = Fill level height in cm
∆ p = Differential pressure in Pa
ρ = Density 700...1300 in kg/m
g
= 9.81 m/s 2
Relay
(Function adjustable)
Deactivated (default)
Active (display shows switching point)
3
/h
Filter
3
DIP
3
OFF
O N