Level Measurement VesselCheck ST1 Non-Invasive Tank Level Gauge Data sheet : ST1/2012 Processor / Display Unit Principle of Operation A small ultrasonic sensor is clamped or bonded to the outside base of the vessel. The system calculates the height of the liquid in the tank from the time taken for the signal to be transmitted and then received from the liquid surface. Signals from the transducer are fed into the processor and then output to a separate system. The package is supplied as a sensor / processor pair. A temperature integrate ultrasonic sensor is available offering compensation for the effects of varying temperatures. Maximum measurement distance = 3000 mm Refrigerant receivers (up to 2000mm) LPG tanks Fuel Tanks Distilled spirit vats Beers tanks Pure water tanks Liquid chlorine tanks Acids/solvents tanks Truly non-invasive sensing technique Sensors bonded to outside of tank base Fits tanks of most shapes and sizes Output to telemetry system – various options ATEX / IECEx approved for hazardous areas (ST1A sensor) Temperature integrated sensors available Low cost, reliable & accurate tank gauging Not affected by pressure Easy installation - no tank break-in Simple retrofit to existing tanks No down-time during installation No moving parts – no maintenance Excellence the World can Measure

Vessel Check ST1 -Technical Specification Accuracy Depends on liquid and temperature range Measuring Range Up to 3000mm / 10 feet (application dependent) Temperature Range (sensors) Hazardous Area Approval (sensors) Analogue Outputs (optional) Digital Alarm Outputs (optional) 2 x Solid state volt-free contacts Max distance (processor to sensor) 100m (it is recommended that this distance is kept as short as possible) Serial Outputs Power Supply Protection Rating (processor) Protection Rating (sensor) Sensor Material Tufnol + stainless steel housing for ST1A version Processor Enclosure Material...

VesselCheck Range Overview Typical Application Maximum Height Hazardous Area Approval High accuracy: beer, spritis, acids, solvents, water, LPG spheres, wine Less accurate: LPG spheres, wine Fuel, water, light oils, acids LPG, small spirit tanks Sensor Only LPG, solvents, acids, fuels, Sulphur Dioxide, Chlorine Sensor & Processor Graphic colour operator interface terminal & evaluation unit for use with VesselCheck systems Rototherm Canongate Technology Midlothian Innovation Centre, Pentlandfield, Roslin EH25 9RE United Kingdom Excellence the World can Measure In keeping with Rototherm Group policy...