Guided radar (TDR) level transmitter for the marine industry

  • Continuous measurement of level or liquid-liquid interface
  • Measuring range: 0.3…35 m / 0.98…114.8 ft
  • -40…+200°C / +390°F; -1…40 barg / -14.5…580 psig

OPTIFLEX 4300 Marine C – Version with single cable

Guided radar (TDR) level transmitter OPTIFLEX 4300 Marine C – Version with single cable
The OPTIFLEX 4300 Marine is a 2-wire (4...20 mA) guided radar level transmitter based on the Time Domain Reflectometry (TDR) technology. The level transmitter is designed to operate in extreme weather conditions on ships and able to measure the level, volume or mass of liquids, pastes, slurries as well as liquid-liquid interface.

Product highlights

  • Designed to operate in extreme weather conditions on ships
  • Marine approvals: DNV, ABS, GL, LR, BV, CCS, NK, KR
  • Displays and measures level or ullage
  • Installation wizard for easy set-up and commissioning
  • High accuracy due to great signal dynamics and sharp pulse
  • PACTwareTM and DTMs included as standard
  • Quick coupling system: converter is rotatable and removable under process conditions

Typical applications

Marine industry

  • Slop, deck, LPG and ballast tanks
  • Oily mixtures from cargo tank washings
  • Ballast water mixed with oil
  • Lubricating oil
  • Water from feed tanks
  • Bunker fuel oil for engine rooms

Related products

Product details

Product category Guided radar (TDR) level transmitter
Alternative product categories Micropulse radar, Flex radar, Guided wave radar (GWR), TDR, Micropower impulse radar MIR, Freespace radar, Guided microwave

Technical data

Product type Level transmitter
Measurement principles Guided radar
Level measurement type Continuous measurement
Measured media Granulates, Powders, Liquid/liquid interface, Slurries, Pastes, Liquids, Solids, Bulk solids
Contact to measured medium Yes
Interface measurement Yes
Probe diameter Single cable Ø4 mm / 0.15"
Probe length 4…35 m/
13…115 ft
Measuring range (liquids) 0.2…35 m/
0.7…115 ft
Measuring range (solids) 0.2…35 m/
0.7…115 ft
Process pressure (relative) -1…40 barg/
-14.5…580 psig
Process temperature -40…200°C/
Wetted parts Austenitic stainless steel (1.4404/316L)
Process seals PFA, FKM/FPM, Kalrez® 6375, EPDM
Accuracy (liquids) ±2 mm/
±0.08 in
Accuracy (solids) ±2 mm/
±0.08 in


Certificates/Approvals Ex ATEX
Certificates/Approvals Marine DNV, GL, BV, LR, NK, KR, ABS, CCS
Ingress protection IP66/67, NEMA4X/6P


Digital outputs HART®
Analogue outputs Current (mA)

Process connections

Flange connections EN (1092-1): DN125
ASME (B 16.5): 5"

Download Center

  • Technical datasheets and handbooks
  • Flyers and brochures
  • Certificates and approvals
  • Software and driver
View OPTIFLEX 4300 Marine related downloads