BD|SENSORS LMP 331

Manufacturer: BD|SENSORS. Products & Manufacturers

Screw-in level/pressure transmitter. Values below are manufacturer family specifications; ranges and options differ by ordering code.

Technical specifications

Principle	Hydrostatic level via pressure
Pressure range	Variant-dependent
Sensor material	Check exact datasheet and ordering code

Official technical documentation

Manufacturer technical source / datasheet ↗

Source reviewed: 17 October 2026. Exact SKU specifications, certifications and ordering options must be verified before product selection.

LMP 331 — screw-in pressure-derived level

The LMP 331 is a screw-in level/pressure transmitter, meaning process-port choice differs from a hanging submersible LMK or LMP 308i. Convert pressure to height only with known liquid density, reference pressure and mounted elevation. Verify the sensor’s wetted diaphragm, sealing and pressure span for the actual tank, along with its output. An industrial pressure fitting does not establish compatibility with every liquid or tank installation.

LMP 331 — screw-in hydrostatic level via process pressure: technical profile and specification boundaries

Original BD|SENSORS catalogue differentiates calibrated pressure ranges, media and approval tiers. A family range and optional certification must not be confused with the ordered device.

Parameter	Original maker statement	Practical selection note
Design type	Screw-in pressure-derived continuous level transmitter	Different mechanical principle from a hanging submersible LMP 308i.
Pressure sensor	Stainless-steel transducer element in threaded process housing	Choose wetted metal, seals and thread to match liquid chemistry/pressure.
Reported level	Hydrostatic head and density, not direct ultrasonic free-space distance	At variable density, calibrated liquid-height conversion changes.
Mounting geometry	Install at fixed bottom-side connection rather than cable suspension	Account for hydrostatic zero elevation, access and cleanout.
Electrical output	Current/voltage signal and connector per exact OEM variant	Configure tank PLC scale using pressure span not presumed tank height.
Optional certifications	Manufacturer lists version-dependent intrinsically safe and SIL-function options	Never copy those optional properties into base version without certificate.
Application	Continuous storage/process liquid level in compatible media	Pressurized tanks demand gas-space pressure correction and suitable static rating.

Application engineering and commissioning

A screw-in LMP 331 can offer service access without a submerged cable but introduces a process-wall seal and threaded opening that require proper torque and leak proofing. Verify absolute/gauge reference and headspace pressure: in a closed tank, bottom pressure is the gas-space pressure plus liquid hydrostatic head. For liquid-specific calibration use the correct density (temperature-sensitive) and units. Exact output, Ex/SIL safety and maximum process pressure must be tied to the order code; a general category page cannot prove compliance.

Original product range: BD|SENSORS manufacturer specifications and linked model documentation. Review exact current sensor code, output, material and certificates before final purchasing.

AirAlign independent technical editorial enrichment · 25 October 2026. These statements are not standalone Ex-area approvals, calibration certificates or proof of active stock.