LMP 331 Semi-flush diaphragm pressure transmitter


The screw-in transmitters LMP 331 are suited for continuous level measurement. Due to the high-quality piezoresistive stainless steel sensor the submersible screw-in transmitter LMP 331 features an excellent linearity and good long term stability. The diaphragm in stainless steel 1.4435 is flush with a G3/4” pressure port. It is sealed with an O-ring in FKM as standard; other materials on request. Possible media are non-abrasive lubricants, oils, sewage, diesel etc. if compatible with the media wetted materials.

A variety of standard output signals as well as mechanical and electrical connections make the LMP 331 covering a wide field of applications. Additional it is possible to use the screw-in transmitter LMP 331 in explosive area (zone 0). 

Preferred areas of use are: ground water level measurement, level measurement in tanks.

Product details

Minimum level range
Maximum level range
Vacuum Resistant
Gauge Only
0-20mA/3-wire, 4-20mA/2-wire, 0-10V/3-wire
Supply Voltage
8-32V dc/2-wire, 10-28V dc/IS-option, 14-30V dc/3-wire
Sensor Type
Stainless Steel Silicon
Process Connection
G3/4" male with flush sensor
Electrical Connection
ISO4400 Plug & Socket, M12 connector, Binder 723, Compact Field Housing, IP67 Cable Outlet
Diaphragm Material
stainless steel 1.4435 (316 L)
Process Connection Material
stainless steel 1.4404 (316L)
Temperature Range
-40 to +125°C
Optional Extra's
Improved Accuracy, Housing material
ATEX Approval, SIL2 rated version,
Product Downloads

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