Rosemount 5900S Radar Tank Level Gauge | NodeWave

The Rosemount 5900S Radar Level Gauge is Emerson's flagship non-contact tank gauging solution. Certified to OIML R85 metrological standards with an instrument accuracy of $\pm 0.5\text{ mm}$ (

\pm 0.020\text{ in}

), it serves as the benchmark for fiscal custody transfer and high-value bulk liquid inventory management.

Executive Summary and Core Capabilities

Engineered specifically for bulk storage terminals, refineries, and chemical tank farms, the Rosemount 5900S provides non-contact measurement across all liquid types—ranging from crude oil and refined fuels to liquefied gases (LPG/LNG) and bitumen.

By operating via a 2-wire intrinsically safe Tankbus, the gauge integrates seamlessly into comprehensive tank gauging systems alongside multi-spot temperature devices and pressure transmitters for precise net volume calculation.

2-in-1 Redundant Overfill Protection: The 5900S offers an innovative 2-in-1 configuration containing two independent radar elements within a single enclosure. This enables a single tank nozzle to serve simultaneously as a SIL 2/3 basic process control level sensor and an independent Safety Instrumented System (SIS) overfill alarm.

Technical Specifications Matrix

Specification	Technical Value
Instrument Accuracy	$\pm 0.5\text{ mm}$ ( $\pm 0.020\text{ in.}$ )
Metrological Certification	OIML R85:2008, NMi, PTB
Measuring Range	$0.8\text{ m}$ to $50\text{ m}$ ( $2.6\text{ ft}$ to $164\text{ ft}$ ) standard
Repeatability / Stability	Typically $< \pm 0.5\text{ mm}$ from $-40\text{ °C}$ to $+70\text{ °C}$
Update Time	Every $0.3\text{ seconds}$

Hardware Feature	Specification Details
Antenna Configurations	Parabolic Antenna, Still-Pipe Array Antenna, Horn Antenna, LPG/LNG Antenna
Redundancy Option	2-in-1 Dual Radar Gauge (Independent Primary Level + Safety Overfill)
Enclosure Construction	Polyurethane-coated die-cast aluminum (IP66 / IP67 / NEMA 4X)
Process Pressure Range	Full vacuum up to $2\text{ bar}$ ( $29\text{ psig}$ ) standard; up to $25\text{ bar}$ for LPG/LNG

Communication Parameter	Specification Details
Bus Topology	2-wire Intrinsically Safe Tankbus (FOUNDATION Fieldbus based)
Power Input	$9.0\text{ to }17.5\text{ VDC}$ (FISCO) / $9.0\text{ to }30.0\text{ VDC}$ (Entity)
Safety Certification	Certified SIL 2 / SIL 3 capable (IEC 61508)
Protocol Emulation	Enraf, Varec Mark/Space, L&J Tankway, Whessoe, GPE, Tokyo Keiso

Target Industry Applications

Marine Terminal Custody Transfer

Provides OIML R85 certified sub-millimeter measurements for fiscal product transfers between tank farms and ships.

LPG / LNG Cryogenic Tank Storage

Dedicated pressurized LPG/LNG antenna designs measure liquid gas inventory through full containment tank structures.

External Resources and Documentation

Access official software, datasheets, and manuals directly from Emerson:

Official Rosemount 5900S Product Page

View complete specifications, download technical documentation, and request quotes on Emerson's website.

Emerson Tank Gauging Systems Overview

Explore integrated tank inventory management systems, temperature sensors, and TankMaster software.

Emerson Rosemount 5900S Radar Tank Level Gauge

Key Highlights

Executive Summary and Core Capabilities

Technical Specifications Matrix

Target Industry Applications

External Resources and Documentation