Marine Tank Gauging Solutions for All Ships
PSM’s marine tank gauging systems and instruments are accurate, robust and reliable - enabling your vessels to operate efficiently and comply with safety and environmental regulations.

A full range of transmitters, gauges, switches and display software
For unrivalled marine tank management and monitoring systems, PSM gauging instruments have been designed and constructed to meet all applications, across all types and size of vessel. From a single switch to complete systems, our type approved and quality certified range of transmitters, gauges and switches are compatible with fuel oil, lubricants, hydraulic fluid and bilge or ballast water and other liquid cargo.
Take a look for yourself
To view our whole TankWatch range of marine tank gauging systems, take a look at the diagram below which shows all applications where monitoring and gauging will be needed. Click on one of the hotspots for a description of that application and the PSM product solutions.
You can also download our Marine Tank Gauging flyer to see how PSM can address your application, or view all products at-a-glance.



Cargo tank level or volume measurement
An advanced pulse radar sensor providing high performance with low maintenance needs. Compact design with no intrusive sensor dome ensures simplicity of installation.


Cargo tank overpressure and vacuum measurement
APT500 or APT1000 with a direct pressure calibration measures the cargo tank inert gas blanket directly or in the vent manifold


Ship's trim and list measurement
A pair of solid state, inclinometers installed 90° with respect to each other, measure bow <> stern and
port <> starboard angles


Wing ballast tank measurement
APT500 or APT1000 level transmitters are installed at the bottom of a stilling tube with cable exit via a deck penetration flange


Double-bottom ballast tank measurement
APT500 or APT1000 level transmitters are installed using a clamp mount with cable exit via a liquid-tight bulkhead penetration


Bunker fuel oil measurement in engine room
APT500 or APT1000 level transmitter with flange mount installed at the base of the tank via an isolating valve as isolation from potential high temperatures




Level detection in bilges and void spaces
BLS 9200 bilge switches detect the rising level of water or oily waste as part of a pump control or flood detection safety system


Ship's draught measurement
APT500 or APT1000 level transmitter installed inside a vented draught tube is used to measure the ship’s depth in the water


Overfill protection for waste water / oil storage
KD 30 level switch used to detect a high level condition in bilge and service tanks


Centralised Display
TankView software provides centralised indication, alarm and control of all tanks. Repeater displays provide function critical information at additional locations
VPM4300 works with APT1000 transmitters and RFM termination modules to provide a networked centralised display.