OPTIWAVE 7500

Radar level transmitter for advanced applications with 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
-50…+200°C / -58…+392°F; -1…40 barg / -14.5…580 psig

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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 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

Interface measurement

Redundancy

Measured media

Liquids, Slurries, Pastes

Measuring range (liquids)

0…100 m / 0…328 ft

Measuring point

Pressurised tank Open tank, Silo, 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

Approvals/Standards

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

Accuracy (liquids) ±2 mm/±0.08 in

Features & Options

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
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