OPTIWAVE-M 7500

OPTIWAVE-M 7500

Radar level transmitter for liquids and solids in the marine industry

  • Continuous, non-contact cargo level measurement
  • 80 GHz radar, Lens antenna (flush-mounted)
  • Very small beam angle for narrow tanks of various heights and shapes
  • Redundant ullage indication with local display on deck

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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 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/-58…+302°F

Optional:

-60…+250°C/-75…+480°F

Gaskets

Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375

Wetted parts

Polyetheretherketone (PEEK)

Flange connections

EN (1092-1): DN125

Approvals/Standards

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

Accuracy (liquids)  ±2 mm/±0.08 in

Accuracy (solids)  ±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.

  • Cargo radar level gauge designed to operate in the roughest marine conditions
  • With rugged stainless steel (1.4404 / 316L) housing and display protection
  • Redundant display: ullage/level will always be shown locally
  • Inert gas pressure sensor (IGP) integral part of radar flange
  • Flush-mounted PEEK Lens antenna (no tank intrusion):
  • DN70 / 2¾″ with extremely focussed beam angle of only 4° for use in narrow tanks
  • DN40 / 1½″ with narrow beam angle of 8° for small to large tanks
  • 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
  • Accuracy: ±2 mm / 0.08″
  • Optimised for use with the CARGOMASTER® solution for liquid cargo monitoring and alarm