*FMR532 Radar Tank Gauge

*FMR532 Radar Tank Gauge

The FMR532 Radar Tank Gauge (RTG), with an accuracy rate of ±0.5 mm and ideally suited for custody transfer applications, is used for continuous, non-contact level measurement in bulk liquid storage tanks. The FMR532 RTG with planar antenna is specifically suited for stilling well applications with ranges up to 38 m (124 ft). The emitted circular mode radar pattern is a must for high accuracy applications on stilling wells.

  • Overview
  • Specifications
  • Options
  • Resources
  • Related Products

Accuracy Approved for Custody Transfer

FMR532 RTG uses C (6 GHz) band microwaves to measure liquids to an accuracy of ±0.5mm (0.02″) This gauge is NMI and PTB approved for use in custody transfer tank gauging systems.



Touch Screen Operations

Easy onsite operation using built-in touch control display without having to open the enclosure. A remote display is also available so that you can read and operate the gauge from the tank side.




4 Wire Radar Communication

Low Cost Wiring

Intrinsically safe 4-wire technology reduces on-tank wiring costs and allows easy implementation into existing systems.


Worldwide Approvals

Each radar gauge is approved for use in explosion hazardous areas to FM, CSA and ATEX standards.


Key Features

  • Cost‐effective intrinsically safe — 4‐wire cable for HART and 24 VDC i.s. power.
  • Easy on‐site operation using built‐in display.
  • Easy commissioning and diagnostics using Windows® based software.
  • Inventory control version with available (±3 mm) accuracy.
  • National approvals (NMi, PTB) for custody transfer.

6.5 kg (14.4 lbs) + weight of flange

Power consumption

Max. 330 mW at 16 V, max. 500 mW at 24 V, max. 600 mW at 30 V.

Current consumption

Max. 21 mA (50 mA inrush current).


IP 65, NEMA 4X (IP20, NEMA 1 with open housing and removed liquid crystal display) Housing T12: separate terminal compartment for increased safety respectively explosion proof. Material: aluminium, seawater repellent, chromate, powder coated Sight window: glass


IP 68 (NEMA 6P)

Antenna IP 68 (NEMA 6P) Conduit entries

M20x1.5; Pg 13.5 (gland included); ¾ NPT; G ¾ internal thread

Ambient temperature

‐40 °F and +185 °F (‐40 °C and +85 °C)


FM, CSA and ATEX approvals
RF approvals ‐ R&TTE, FCC
Marine certificate ‐ GL (Germanisch Lloyd), ABS, NK
Factory Mutual ‐ IS Class I,II,III, Div 1 Groups A‐G T*
Class 1, Zone 0, AEx ia IIC T*
DIP Class II,III, Div 1 Groups E,F,G T*
NI Class I, Div 2 Groups A‐D T*
XP‐IS Class 1, Div. 1 Groups A‐D T*
XP Class 1, Zone 0, IIC T*
Antenna Class 1, Zone 0, AEx ia IIC T*
CSA ‐ ExnC IIC Class 1 Zone 2, Exd [ia] IIC Zone 1/0, Ex ia IIC Class 1 Zone 0

See specifications document for more information.

Approvals & Certifications

FM, CSA and ATEX approvals


Various DN Sizes and Material Types

Process Connections

DIN and ASME flange

Output Options


Gland Entry

Metric, NPT


NMi + PTB (<1mm) Custody Transfer, or Inventory Control Version (3mm)

Contact Varec for more information.


Radar Gauge Comparison Guide
Easy-to-follow guide that compares the FMR532, FMR50, FMR51, FMR52, FMR53, FMR54, FMR540, FMR60, FMR62, NMR81 and NMR84 radar gauges.

Application Checklists

Radar Tank Gauging Checklist
Checklist for Radar Tank Gauging needs.
Temperature Tank Gauging Checklist
Checklist for Temperature Tank Gauging needs.

Parts and Accessories

FMR532 Radar Gauge Parts and Accessories
Please visit the Endress and Hauser website to access the parts and accessories information for the FMR532 Radar Gauge.


FMR532 Radar Gauge Technical Manual
Please visit the Endress and Hauser website to access the technical manual and operating instructions for the FMR532 Radar Gauge.

White Paper

Level Up! The True Cost of Accuracy
In recent years, European tank gauging manufacturers have focused their marketing efforts on persuading tank farm, terminal, and refinery owners...
Addressing API Standard 2350 for Overfill Protection and Prevention
In the coming months and years, owners and operators of US-based petroleum storage facilities will be required to meet the...

Technical Specifications

FMR532 Series Radar Tank Gauge Technical Specifications
Technical specifications for the model FMR532 Radar Tank Gauge.


Inventory Control Solutions
Integrate Field Instruments and Software for Complete Asset Management
Advanced Tank Gauging
High Accuracy Inventory Management and Custody Transfer Applications
Cookie Settings