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.
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
Depending on selected device configuration
| Product type | Level transmitter |
| Product family name | OPTIWAVE |
| Product positioning | For liquids in narrow tanks with internal obstructions |
| Measurement variables | Distance, Level, Mass, Reflection, Volume |
| Measurement principle | Radar (FMCW) |
| Level measurement type | Continuous measurement |
| Contact to measured medium | No |
| Interface measurement | No |
| Redundancy | No |
| Measured media | Liquids, Slurries, Pastes |
| Measuring range (liquids) |
0…100 m/ 0…328 ft |
| Measuring point | Pressurised tank, Open tank, Bypass |
| Process pressure |
-1…40 barg/ -14.5…580 psig |
| Process temperature |
-50…+200°C/ -58…+392°F |
| Antenna | Polyetheretherketone (PEEK), Polytetrafluoroethylene (PTFE) |
| Gaskets | Ethylene propylene diene monomer (EPDM), Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375 |
| Flange connections |
EN (1092-1): DN50…200 ASME (B 16.5): 2…8'' JIS (B 2220): 50…200A |
| Pressure ratings |
EN (1092-1): PN40 ASME (B 16.5): Cl 300# JIS (B 2220): 10k |
| Thread connections |
Male: G¾, G1, G1½, G3 ¾ NPT, 1 NPT, 1½ NPT, 3 NPT |
| Certificates/Approvals Others | NACE, WHG, CRN / ASME B31.3 |
| Certificates/Approvals Ex | ATEX, cQPSus, IECEx, NEPSI, EAC Ex, KCs |
| Certificates/Approvals Marine | DNV, NK |
| Certificates/Approvals Safety | SIL 2/3 |
| Ingress protection | IP66/68, NEMA4X/6P |
| NAMUR compliance | NE 107, NE 21, NE 43, NE 53 |
| Analogue outputs | 4…20 mA |
| Digital outputs | FOUNDATION™ fieldbus, HART®, Profibus-PA |
| Accuracy (liquids) |
±2 mm/ ±0.08 in |
