STAR-Tank User Manual

Safiery STAR-Tank Radar Bluetooth Sensors STAR-Tank sensor support has been added to Venus OS. These radar tank level sensors use BLE (Bluetooth Low Energy). This wireless technology allows devices to be networked within a range of about 40 meters (with Bluetooth Adapter added to Cerbo GX, see below), while consuming significantly less power than ordinary Bluetooth technology. The expected battery life is 5 years with tank measurement averaging 50%. Battery life is less at around 3 years if tanks average 10% level for example. The liquid level, temperature and sensor battery voltage are streamed wirelessly to the GX device. STAR-Tank sensors feature phased coherent radar sensing for non-pressurized tanks. The tank level range is 2m as standard. This can be extended, consult Safiery. The top 30mm from the base of the sensor is a dead band. If the tank is 12mm thick fiberglass, then the deadband is 18mm below the top of the tank. The sensors are attached directly on top of any non-metal tank including thick fibreglass tanks. For metal tanks, the sensor needs a clear view of the liquid. To achieve that, a 5 hole SAE pattern adapter is included into the base. To achieve an air tight seal, use “gas sealing tape” (generally pink) and wrap on the thread and screw into the base plate. This prevents gas from the tank passing through STAR-Tank. For non-metal tanks simply adhere the base plate and after curing, screw the STAR-Tank module onto the base. STAR-Tank suits black water tanks, even with foam above the liquid line. Pressing the black button on top of STAR-Tank initiates an AI startup routine to select the dominant line-of-sight signal from a cloud of reflected information. The AI routine does this to minimize battery usage. Press and hold that button for approx. ten seconds. During that 10 seconds the LED surrounding the button is a solid red LED. Wait until the Solid Red LED turns to solid Green then remove finger. The AI function is now complete. After the button is released, every 10 seconds for 10 minutes, the LED flashes tank level status: Flashing purple means tank is absolutely full or some object under sensor is blocking it like a baffle. Drain some liquid and repeat the process. Flashing red means the tank is close to full. Flashing green means tank level is 1m or more below the sensor. Then there are in-between colours of orange to yellow. The purpose of this guide is to give the user confidence in correct operation.