Level Measurement VesselCheck ST2 Non-Invasive Tank Level Measurement System Data sheet : ST2/2012 24 Vdc / 110/230Vac Reference used by ST2 only Principle of Operation The ST2 uses two small ultrasonic sensors bonded or clamped to the outside walls of the vessel - one on the bottom of the vessel and the other on the side, to compensate for variations in sonic velocity and temperature. Signals from the transducers are fed into the processor and displayed locally and/or output to the plant control 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. Truly non-invasive sensing technique Sensors bonded to outside of tank base and side wall 20 point calibration table Optional local display & keypad 4..20mA / 1..5V analogue outputs RS485 / 232 Modbus serial communications ATEX / IECEx approved sensors for hazardous areas available Fast, reliable and accurate tank contents measurement Easy installation - no tank break-in, easy retrofit to existing tanks yy No down-time during installation yy No moving parts – little or no maintenance required ATEX Sensor shown Excellence the World can Measure

Vessel Check ST2 - Technical Specification Accuracy Measuring Range 75mm to 25 metres / 3” to 80 feet (application dependent) Temperature Range (sensors) Hazardous Area Approval (sensors) Analogue Outputs (optional) Digital Alarm Outputs (optional) 4 x Solid state active outputs (>17Vdc) Max distance (processor to sensor) Serial Outputs Power Supply Protection Rating (processor) Protection Rating (sensor) Sensor Material Tufnol / Ertacetal Processor Enclosure Material High Impact Polystyrene Display Size (optional) Dimensions (processor / display unit) Weight (processor) Product Identification...

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...