The VISY-RF is the fully wireless variant of FAFNIR's VISY tank gauging system, designed for fuel stations, tank depots, and aboveground/underground storage tanks where cable ducts are unavailable or excavation is cost-prohibitive. Each tank is equipped with a VISY-Stick probe measuring product level, temperature, and water level. A battery-powered VISY-RFT-L transmitter (IP67, ATEX/IECEx certified for Zone 0) mounted in the tank manhole transmits sensor data via 433 MHz radio to a VISY-Command RF receiver installed inside the station building.

How does the wireless system ensure reliable data transmission?

The VISY-RFT-L transmitter sends 3 data packets per transmission at 1-minute intervals or 6 packets at 5-minute intervals (factory default). The 433.92 MHz frequency provides up to 250 m line-of-sight range. For sites with heavy vehicle traffic or challenging topology, up to two external receiving antennas can be connected to the VISY-Command RF receiver. A portable VISY-RF Meter field-strength meter aids optimal antenna placement during installation.

What regulatory and operational monitoring does the VISY-RF provide?

Automatic delivery detection identifies and logs fuel deliveries without operator intervention. Static leak detection and continuous inventory reconciliation support environmental compliance and loss prevention. The VISY-Command RF receiver communicates with higher-level POS/BOS systems via RS-232, RS-485, or optional IFSF-LON interface. An optional VISY-View Touch display provides visual tank content indication for station personnel or tanker drivers during filling operations.