Overview
The OPTIWAVE 6500 is a 2-wire 80 GHz radar (FMCW) level transmitter for demanding applications with powders in very dusty atmospheres. With its small beam angle, this radar is particularly suited for continuous, non-contact level measurement in high and narrow silos, hoppers or buffer storage containers up to 100 m / 328 ft. Due to specific algorithms and the high signal dynamics of the FMCW radar, the level transmitter is ideal for low-reflective media, dust, uneven surfaces or silos with internal obstructions. As it features flush-mounted PEEK and PTFE Lens antennas, 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.
- 2-wire, loop-powered, with HART®7
- High dynamics for clear vision despite dusty atmospheres or low reflective media
- Empty tank spectrum function eliminates false reflections caused by tank internals
-
Flush-mounted PEEK or PTFE Lens antennas (no tank intrusion):
- DN70 / 2¾″ with 4° beam angle for distances up to 100 m / 328 ft
- 112 mm / 4.4'' antenna extension for long nozzles
- Unaffected by angle of repose
- Purging system for antenna cleaning
-
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 choice of flange and thread connections
- Low-cost 316L low-pressure flange discs
- 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
- 3-year warranty
Specifications
Depending on selected device configuration
General information
| Product type | Level transmitter |
| Product family name | OPTIWAVE |
| Product positioning | For powders and dusty atmospheres |
| 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 | Solids, Granulates, Powders |
| Measuring range (solids) |
0…100 m/ 0…328 ft |
| Ambient temperature |
-40…+80°C/ -40…+176°F |
| Measuring point | Silo, Stockpile, Conveyor belt, Shaft, Bunker, Crusher |
Operating conditions
| Process pressure |
-1…40 barg/ -14.5…580 psig |
| Process temperature |
-50…++150°C/ -58…++302°F |
Materials
| Antenna | Polyetheretherketone (PEEK) |
| Gaskets | Ethylene propylene diene monomer (EPDM), Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375 |
Process connections
| 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: G1½, G3 1 ½ NPT, 3 NPT |
Approvals/Standards
| Certificates/Approvals Others | WHG, CRN / ASME B31.3 |
| Certificates/Approvals Ex | ATEX, cQPSus, IECEx, NEPSI, EAC Ex, KCs |
| Certificates/Approvals Marine | DNV |
| Certificates/Approvals Safety | SIL 2/3 |
| Ingress protection | IP66/68, NEMA4X/6P |
| NAMUR compliance | NE 107, NE 21, NE 43, NE 53 |
Communication
| Analogue outputs | 4…20 mA |
| Digital outputs | FOUNDATION™ fieldbus, HART®, Profibus-PA |
Accuracy
| Accuracy (solids) |
±2 mm/ ±0.08 in |
VN 2375 
US 1600 
BR 1238 
CN 820 
SG 527 
HK 394 
GB 349 
CA 276 
