The OPTIWAVE-M 7500 is a highly accurate and reliable 2-wire 80 GHz radar (FMCW) level transmitter for measuring ullage. Equipped with a heavy-duty stainless steel housing, this marine level radar is designed to withstand the roughest conditions on deck. Due to its flush-mounted PEEK Lens antenna with a very small beam angle, this FMCW radar is the optimal choice for continuous, non-contact level measurement involving narrow small or high tanks with internal obstructions. Insensitive to deposits or corrosive environments, this marine level transmitter is equally suited for oil or other liquids, slurries and pastes as well as solids.
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 and solids in the marine industry |
| Measurement variables | Distance, Level, Mass, Reflection, Volume |
| Measurement principle | Radar (FMCW) |
| Level measurement type | Continuous measurement |
| Contact to measured medium | No |
| Interface measurement | No |
| Measured media | Liquids, Slurries, Pastes, Solids |
| Measuring range (liquids) |
0…40 m/ 0…132 ft |
| Measuring range (solids) |
0…40 m/ 0…132 ft |
| Ambient temperature |
-40...+70°C/ -40...+160°F |
| Measuring point | Pressurised tank, Open tank, Silo, Bunker |
| Process temperature |
-40…+150°C/
optional: |
| Gaskets | Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375 |
| Wetted parts | Polyetheretherketone (PEEK) |
| Flange connections | EN (1092-1): DN125 |
| Certificates/Approvals Ex | ATEX, IECEx |
| Certificates/Approvals Marine | ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA |
| Ingress protection | IP66/67 |
| Analogue outputs | 4…20 mA |
| Digital outputs | HART® |
| Accuracy (liquids) |
±2 mm/ ±0.08 in |
| Accuracy (solids) |
±2 mm/ ±0.08 in |
