LMK 331 - Screw-in Hydrostatic level transmitter


The screw-in transmitter LMK 331 has been specially designed for level and process measurement. Due to the semiflush mounted pressure sensors the LMK 331 can be used in viscous or contaminated media.

The ceramic sensors feature high compatibility against aggressive media. The sensor is sealed against the pressure port depending on the nominal pressure range with FKM or NBR seals as standard. Other elastomers are available.

Pressure port material is alternatively stainless steel 1.4571 (316Ti), or, for particularly aggressive media, PVDF or PVC can be ordered. For process measurement applications different process connections are available on request. Additional it is possible to use the screw-in transmitter LMK 331 in explosive area, zone 0.


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
Ceramic Piezo-resistive
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
Ceramic Al2O3 96 %
Process Connection Material
stainless steel 1.4404 (316L), PVDF optional for
Temperature Range
-40 to +135°C
ATEX Approval, SIL2 rated version
Product Downloads

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SGS ISO 9001 UKAS 2014 TCL LR-1