4
3 Functions and features
The pressure sensor detects the system pressure of machines and installations�
3.1 Applications
Type of pressure: relative pressure
Order no.
Measuring range
Permissible
overload pressure Bursting pressure
bar
PSI
bar
PSI
bar
PSI
PI7093
-1���25
-14�4���362�7
100
1 450
350
5 070
PI7094
-1���10
-14�5���145
50
725
150
2 175
PI7096
-0�124���2�5
-1�8���36�24
20
290
50
725
MPa = bar ÷ 10 / kPa = bar × 100
Static and dynamic overpressures exceeding the indicated overload pres-
sure are to be avoided by taking appropriate measures�
The indicated bursting pressure must not be exceeded� Even if the bur-
sting pressure is exceeded only for a short time, the unit can be destroyed�
NOTE: Risk of injury!
4 Function
4.1 Processing of the measured signals
•
The unit displays the current system pressure�
•
It generates 2 output signals according to the parameter setting�
OUT1
2 selection options
•
switching signal for pressure limit values�
•
diagnostic signal (in case of a fault output 1 becomes inactive)�
OUT2
•
switching signal for pressure limit values�
4.2 Pressure monitoring / switching function
OUTx changes its switching state if it is above or below the set switching limits
(SPx, rPx)� The following switching functions can be selected:
• Hysteresis function / normally open: [OUx] = [Hno] (→ fig. 1).
• Hysteresis function / normally closed: [OUx] = [Hnc] (→ fig. 1).
First the set point (SPx) is set, then the reset point (rPx) at the requested
distance�
