VesselCheck is a highly versatile and accurate range of non-invasive liquid level measurement systems, comprising a signal processing unit and ultrasonic transceivers.

Working Principle

Ultrasonic sensors are clamped or bonded to the outside walls of the vessel; one on the bottom of the vessel, with the fully density compensated option, one on the side. Signals from the transducers are fed into the processor and either displayed locally, if that option is selected, or output to a separate system. The system calculates the height and volume of the liquid in the tank, from the time taken for the signal to be received from the liquid surface.

A range of systems are available, see the chart below for typical applications:

ST1 ST1A ST1AD ST1RH ST2 ST4 VCHMI

Typical Application	Max Height	# Tanks	Haz Area Approval	Display	Variant
High accuracy: beer, spirits, acids, solvents, water, LPG spheres	20m	2	Optional	Optional	ST2
Less accurate: LPG spheres, wine	20m	4	Optional	Optional	ST4
Fuel, water, light oils, acids	3m	1	No	No	ST1
LPG, small spirits tanks	3m	1	Sensor only	No	ST1A
LPG, solvents, acids, fuels, suplhur Dioxide, Chlorine	3m	1	Sensor & Processor	Yes	ST1AD
Refrigerant Gas	2m	1	No	No	ST1RH
Graphic Colour Operator Interface Terminal & Evaluation Unit for use with VesselCheck systems	N/A	Up to 32	No		VCHMI