The OPTIWAVE 7400 is a 2-wire 24 GHz radar (FMCW) level transmitter for liquids in harsh environments like tanks with agitators containing corrosive media. It is particularly designed for continuous, non-contact level measurement under extreme conditions prevalent in the chemical, petrochemical, power, metal or oil and gas industry. The device features Metallic Horn antennas as well as PTFE and PEEK Drop antennas for measuring distances up to 100 m / 328 ft. The Drop antennas are perfectly suited for aggressive liquids in tanks. In applications with toxic and dangerous products, this radar device can be equipped with a METAGLAS® second sealing barrier.
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 agitated and corrosive liquids |
| 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 |
| Ambient temperature |
-40…+80°C/ -40…+176°F |
| Measuring point | Pressurised tank, Open tank, Stilling well |
| Process pressure |
-1…100 barg/ -14.5…1450 psig |
| Process temperature |
-50…200°C/ -58…+390°F Special version (on request): Up to +700°C/+1292°F |
| Antenna | Polyetheretherketone (PEEK), Polytetrafluoroethylene (PTFE) |
| Gaskets | Ethylene propylene diene monomer (EPDM), Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375 |
| Flange connections |
EN (1092-1): DN40…200 ASME (B 16.5): 1½…8″ JIS (B 2220): 40…200A |
| Pressure ratings |
EN (1092-1): PN100 ASME (B 16.5): Cl 1500# JIS (B 2220): 10k |
| Thread connections |
Male: G1½ 1½ NPT |
| Certificates/Approvals Others | NACE, WHG, CRN / ASME B31.3 |
| Certificates/Approvals Ex | ATEX, cQPSus, IECEx, NEPSI, EAC Ex |
| 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 |
