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MARSIC300 emission monitoring solution
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MARSIC300 emission monitoring solution
New

Safely on the right course

Benefits

  • Modules that are easy to replace during servicing
  • Low costs thanks to minimal maintenance requirements
  • Extensive network for service support
  • Quick access to expert support with remote maintenance
  • No expensive test gases thanks to its certified internal drift correction
  • Also equipped for new requirements thanks to its rugged design and high level of measurement accuracy
FLEXible answers to individual needs
Current product

MARSIC300 emission monitoring solution

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  • Specialized products
  • Designed for demanding applications

What is FLEX?

FLEX selections
Technical excellence
Simplicity
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Fundamental selection Meet your basic measurement needs
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Lean selection Handle your core processes easily
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Extended selection Optimize your processes with innovative technologies
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Xpert selection Master your most challenging applications
Variable
Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

Learn more

Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

Learn more

24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Office situation support
Have questions about this product?

Product information

Specifications
Measuring / Application task CO2, SO2, NO, NO2, CO, NH3, H2O, CH4
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Description

The MARSIC300 ship emissions measuring device is a customized solution for reliably measuring emissions on ships according to MARPOL Annex VI and IMO MEPC. The MARSIC300 is type-approved for this application by well-known classification organizations. The MARSIC300 measures both SOx and CO2 upstream and downstream of the scrubbers, and NOx upstream and downstream of SCR plants. The measuring device impresses with extremely low maintenance costs and modules that are easy to replace.

Field of application
  • Reliable emission monitoring on ships
  • Accurate DeNOx and DeSOx measurements for ship engines
  • Cost-efficient process monitoring of the scrubber and catalytic converters


Device properties:

  • Rugged design and high level of measurement accuracy
  • Type-approved by well-known classification organizations in accordance with MARPOL Annex VI and IMO MEPC
  • Measuring ranges adapted to low and high concentrations of SO2 and NOx
  • Up to 8 measuring components at the same time: SO2, CO2, CO, NO, NO2, NH3, H2O, CH4
Benefits
  • Modules that are easy to replace during servicing
  • Low costs thanks to minimal maintenance requirements
  • Extensive network for service support
  • Quick access to expert support with remote maintenance
  • No expensive test gases thanks to its certified internal drift correction
  • Also equipped for new requirements thanks to its rugged design and high level of measurement accuracy
Predecessors
Downloads
Most downloaded
Operating Instruction (BA)
SFU100, SFU150 Gas Sampling Unit for maritime applications
English version - 01/2025
Download
Technical Information (TI)
MARSIC300, Installation and Initial Start-up Ship Emission Measuring Device (Technical Information)
English version - 10/2025
Download
Operating Instruction (BA)
SFU Gas Sampling Unit
English version - 01/2025
Download
All downloads
30 Downloads
Technical Information (TI)
Most downloaded
MARSIC300, Installation and Initial Start-up Ship Emission Measuring Device (Technical Information)
English version - 10/2025
Download
Operating Instruction (BA)
SFU Gas Sampling Unit
English version - 01/2025
Download
Operating Instruction (BA)
SFU weatherproof enclosure Gas Sampling Unit with Weatherproof Enclosure
English version - 01/2025
Download
Operating Instruction (BA)
Most downloaded
SFU100, SFU150 Gas Sampling Unit for maritime applications
English version - 01/2025
Download
Operating Instruction (BA)
MARSIC300 Ship Emission Measuring Device
English version - 08/2025
Download
Short Instruction (KA)
MARSIC300 Quickstart Quickstart guide to commission the product quickly
and easily and to achieve initial measurement results
English version - 01/2025
Download
Short Instruction (KA)
Condensate Container for analyzer solutions The use of the condensate container is to collect condensate
within the gas outlet in order to prevent condensate formation in
the direct environment of the measuring device.
English version - 01/2025
Download
Short Instruction (KA)
Conditioning of Instrument Air for Analyzer Solutions The intended use of the Instrument Air Conditioning Unit is to supply a
measuring device with clean, filtered and conditioned instrument air.
English version - 01/2025
Download
Installation Instructions (EA)
MARSIC300 - Cooling Device Retrofit Instructions that describe the service work
required for installation of a new cooling device
English version - 01/2025
Download
Installation Instructions (EA)
MARSIC300 - Cooling Device Installation Instructions
English version - 01/2025
Download
Installation Instructions (EA)
MARSIC300 with SFU These Retrofit Instructions describe the service work for installation
of the Retrofit Kit SFU.
English version - 01/2025
Download
Ex Safety Instruction (XA)
Safety Information for non-Ex analyzer devices
(multi-lingual, also in DE, BG, CS, DA, EL, ES, ET, FI, FR, HR, HU, IT,
LT, LV, NL, NO, PL, PT, RO, RU, SK, SL, SV)
English version - 01/2025
Download
Special Documentation (SD)
DIN EN 61010-1: 2020-03 Additional Information for Extractive Gas Analyzers
(multi-lingual, also in DE, ES, FR and IT)
English version - 01/2025
Download
Special Documentation (SD)
MARSIC300: Maintenance Addendum to the MARSIC300 Ship Emission Measuring Device with
important information required for device maintenance
English version - 01/2025
Download
Special Documentation (SD)
MARSIC300 Decommissioning Description of the shutdown procedure and how to protective measures
for long-term storage of the MARSIC300
English version - 01/2025
Download
Competence Brochure (CP)
Emission Monitoring Solutions Broad portfolio and long-standing experience
English version - 05/2026
Download
Competence Brochure (CP)
Soluzioni per il monitoraggio delle emissioni Soluzioni per il monitoraggio delle
emissioni
Ampio portfolio e vasta esperienza
Italian version - 05/2025
Download
Competence Brochure (CP)
Lösungen zur Emissionsüberwachung Breites Portfolio und langjährige
Erfahrung in Gasanalyse und
Durchflussmessung
German version - 03/2026
Download
Competence Brochure (CP)
排出ガス監視ソリューション 幅広い製品群と長年にわたる実績 排出ガス監視、測定原理と技術、国際的な要件とサービス、選択ガイド、そして測定装置の一覧をまとめたパンフレット
Japanese version - 09/2025
Download
Innovation (IN)
MARSIC – 舶用排出ガス測定機器、正しい航路を安全に MARSIC300船舶排出ガス測定装置は、MARPOL Annex VIおよび
IMOMEPC.に従って船舶の排出ガスを高い信頼性で測定するための革
新的なソリューションです。
Japanese version - 10/2025
Download
Innovation (IN)
MARSIC300 – Ship emissions measuring device With MARSIC300, the ship emissions measuring device, you can sail
fully certified across all the seas.
English version - 03/2026
Download
Marine
Product family: MARSIC, MARSIC300 Product root: IMAR300-
Region: International
Approval agency: NK
English version - 03/2025
Download
Marine
Product family: MARSIC, MARSIC300 Product root: IMAR300-
Region: International
Approval agency: LR
English version - 01/2025
Download
Marine
Product family: MARSIC, MARSIC300 Product root: IMAR300-
Region: International
Approval agency: NK
English version - 05/2025
Download

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Spare parts and accessories

further parts
further parts

MAINT. KIT F. GAS SAMPL. FILTER-GLASSF.

further parts
further parts
Order code 2043616
further parts
further parts

CHECK VALVE NPT1/4" 25PSI FPM SS

further parts
further parts
Order code 5310158
further parts
further parts

SP-SET ANALYZER EMISSION COMPLETE CAL.

further parts
further parts
Order code 2081439
further parts
further parts

ANALYZER EMI CPLT. EXCHANGE 2081439

further parts
further parts
Order code 2081464
Spare parts & accessories