PSM Instrumentation

PSM Instrumentation is a specialist in advanced marine instrumentation, software systems and application solutions for marine architects, ship designers, ship builders and fleet owners. Industrial Level Transmitters, Contents Gauges, and Tank Contents Monitoring Systems.

BLS 9200 Bilge Level Switch

Level Switches

PSM has designed the BLS 9200 Bilge Level Switch compact, but rugged bilge water level alarm switch specifically for marine bilge level measurement on vessels of all sizes.

Fully Submersible Marine Approved Bilge Alarm/Water Level Switch

The integral manual checking device in the BLS 9200 fully submersible marine approved bilge alarm/water level switch conforms to class rules without complicating installation. Siting and mounting are also simple, requiring only a two bolt fixing. The self-draining, fully shrouded design prevents interference of operation from obstructions or floating debris.

Due to the harsh environments that this bilge water level switch is likely to encounter, extensive successful testing has been undertaken, exceeding the required environmental testing required for Marine Type Approval laid out in IACS Unified requirement E10 and the relevant sections of IEC945.

Key Features

  • Compact stainless steel construction with integral slosh and debris protection cage
  • Integral manual check lever
  • Fully submersible IP68 construction with relevant marine type approvals
  • Simple 2 Bolt Fixing
  • Choice of Marine grade cables. Two metres of cable as standard, optional lengths as required
  • Optional termination enclosure with built in switch protection
  • Military approved version NSN:6680-99-361-6302

For further information and technical details, please download our BLS 9200 Bilge Level Switch datasheet or contact us to discuss your requirements.


ict 1000 Smart Dual Mode Hydrostatic Level Transmitter

Level and Contents

Digital and Analogue Transmitters

PSM has drawn upon 30 years of global marine industry application experience to develop a smart dual mode Modbus and analogue liquid level transmitter that offers you the highest possible standards in terms of performance, versatility, functionality and reliability.

The ict 1000 hydrostatic level transmitter’s pioneering capacitive measurement cell is manufactured in robust and durable ceramic. Our careful design of the sensor means the diaphragm is fully supported and protected against overload and shock pressure conditions.

Key Features

  • Designed and constructed specifically for marine applications with all relevant industry body and type application approvals
  • Can operate either as an analogue 4 – 20mA hydrostatic level transmitter or can communicate directly to the host system using the RS485 Modbus protocol
  • Full range of process connections and transmitter mounting options available
  • Compatible with all common marine liquids and cargo applications: seawater, fuel and lubricating oil, bilge water etc.
  • Digital bus and mA analogue outputs available on one transmitter. No remote mounted signal conversion electronics are required.
  • Output available as level or volume via a user programmable height vs. volume table
  • Multi-drop Modbus digital mode allows for significant cable savings in multiple-tank installations
  • Wide span with a high measurement accuracy and long term stability
  • Programmable remotely via an RS485 modem and supplied software configuration tool
  • Robust construction gives reliable operation and low maintenance costs
  • PROGRAMMING UTILITY FREE OVER WEB!