4
3 Function and features
The pressure monitor detects the system pressure and generates two output
signals (2 NO with independently adjustable switch points:
•
In case of increasing pressure OUT1 (OUT2) closes when the Set1 (Set2)
value is reached�
•
In case of decreasing pressure OUT1 (OUT2) opens when the value „Set1
(Set2) minus hysteresis“ is reached.
The hysteresis is fixed (2% of value of measuring range).
Applications
Type of pressure: relative pressure
Order no.
Measuring range
Permissible
overload pressure
Bursting
pressure
bar
PSI
bar
PSI
bar
PSI
PK7520
0���400
0���5 800
600
8 700
1 600
23 200
PK7521
0���250
0���3 625
400
5 800
1 000
14 500
PK7522
0���100
0���1 450
200
2 900
1 000
14 500
PK7523
0���25
0���363
60
870
500
7523
PK7524
0���10
0���145
25
362
300
4 350
Avoid static and dynamic overpressure exceeding the given overload
pressure�
Even if the bursting pressure is exceeded only for a short time the unit can
be destroyed (danger of injuries)!
If the cable length exceeds 30 m or if used outside buildings, there is a risk
of overvoltage pulses from external sources� We recommend to use the
unit in protected operating environments and to limit overvoltage pulses to
max� 500 V�
4 Installation
Before mounting and removing the sensor, make sure that no pressure is
applied to the system�
