2 English
Installation of connections according to DIN 3852
Make sure that: 
 – The sealing surface on the relevant part is perfectly 
clean and free of residues,
 – The O-ring seated in the slot provided is undamaged. 
1.  Screw the device into the mounting thread by hand. 
Secure devices to the steel pressure connection using 
a flat wrench. Observe the following torque values:
Mechanical installation
Fig. 2: Electrical connection and process connection
Adapter for process 
connection
Torque Connection 
per  
EN 3852
Connection  
per  
EN 837
NPT  
connection
1/4" approx. 5 Nm approx. 20 Nm
approx. 30 Nm
1/2" approx. 10 Nm approx. 50 Nm approx. 70 Nm
Fig. 3: Display and connection housing rotate 320° 
Fig. 4: Process connection for the flush-mounted sensor (G1/2" in 
accordance with EN 3852) 
Factory-set 
connection G1/2"
Fluid
Flush-mounted 
sensor
Important notes for installation of flush-mounted 
sensors:
Caution! 
Handle the unprotected membrane with the 
utmost care: it can be easily damaged.
 – Do not remove the packaging and protective cap until 
shortly before installation, so that the membrane 
remains undamaged. Retain the protective cap.
 – After disassembly, place the protective cap back over 
the membranes immediately.
 – Do not use force when installing the sensor, so as not 
to cause damage to the device or the system.
Membranes
Fig. 1: Unprotected membrane of the flush-mounted sensor
Pressure Sensors with IO-Link
BSP-B... /-V...