
The OPTIWAVE 7500 is a 2-wire 80 GHz radar (FMCW) level transmitter for demanding liquid applications involving narrow tanks with long nozzles and internal obstructions like agitators or heating coils. Its very small beam angle and negligible dead zone make this FMCW radar the optimal choice for continuous, non-contact level measurement in both extremely small and very high tanks (up to 100 m / 328 ft). The level transmitter is even able to measure through tank roofs made of non-conductive materials. Its PEEK and PTFE Lens antennas are insensitive to deposits and well suited for corrosive environments. As the antennas are flush-mounted, there is no intrusion into the tank.
The OPTIWAVE 7500 provides accurate readings even in processes with fast changing levels. It can be used in operating temperatures of up to +200°C / +392°F and pressures up to 40 barg / 580 psig. This level transmitter offers a wide range of flange and thread connections (starting from ¾″). It comes with approvals for use in hazardous areas as well as extensive device diagnostics (acc. to NE 107) and HART®7 communication.
Highlights:
2-wire, loop-powered, with HART®7
Flush-mounted PEEK or PTFE Lens antennas (no tank intrusion)
• Insensitive to deposit
• Small dead zone and beam angle (4° with DN70 / 2¾″ Lens
antenna)
• PEEK or PTFE flange plate protections as well as a PEEK thread
protection for corrosive media
• 112 mm / 4.4″ antenna extension for long nozzles
Empty tank spectrum function eliminates false reflections caused by tank internals
TBM (Tank Bottom Management) ensures reliable measurement even in empty tanks:
• Dedicated algorithms to filter and compensate for irregular
radar wave reflections that occur at tank bottom when the
vessel is empty
• Allows for quick and easy commissioning of tanks regardless of
their size, material or geometry
±2 mm / ±0.08″ accuracy
Large range of flange and thread connections
Large, backlit LCD screen with 4-button keypad for operation with bar magnet; no need to open the housing cover
PACTware™, HART® DD and DTM provided free of charge with full functionality
Extensive device diagnostics acc. to NAMUR NE 107
SIL 2/3 certified for safety-related applications
Applications:
General
Level measurement in small and narrow tanks with internal obstructions (e.g. heating coils, agitators etc.)
Level measurement in tanks with long nozzles
Measurement through tank roofs made of non-conductive material (e.g. plastic, fibreglass or glass)
Processes with fast changing levels (≤60 m/min / 196.85 ft/min)
Chemical industry
Solvents, acids
Foaming agents
Fertiliser (e.g. urea)
Chlorine
Resins
Paint, ink
Corrosion inhibitors
Petrochemical industry, oil and gas industry
Liquefied Petroleum gas (LPG)
Hydrocarbons
Slop oil
Drilling mud
Ethylene
Lubricant oil
Power industry
Hydrocarbons
Lime milk
OPTIWAVE 7500 C - Krohne 80 GHz Radar (FMCW) Level Transmitter for liquids in narrow tanks with internal obstructions
• Continuous, non-contact level measurement in small and narrow tanks with agitators as well as long nozzles
• 80 GHz radar, flush-mounted Lens antenna
• Measuring range: 0…100 m / 328 ft