INGOLDLeading Process Analytics

Gas-Phase Oxygen MeasurementsMeasure In-line and Save Costs

OxygenMeasurementSystems

O2 Gas MeasurementFast in-line results

No sample gas conditioning

Predictive, real-time diagnostics

2

Oxygen Gas MonitoringWhy Don’t you Measure In-line?

Oxygen measurement in gas phase for safety assurance and prevention of product oxi-dation can translate into high investment costs and tedious maintenance. METTLERTOLEDO offers a unique and easy-to-use solution for challenging applications.

Gaseous

OxygenMeasurementSystems

■ Avoid flash fire during storage■ Establish degredation free condi-tions for product storage

■ Low installation cost■ Reliable measurement■ Reduced gas consumption■ Easy maintenance

Oxygen measurement in gas phaseis typically driven by two require-ments. One is to ensure safety ofthe process and protect its environ-ment and the other is to preventproducts and equipment from oxi-dation resulting in reduced yieldcaused by unwanted by-products.

Existing analytical systems mostlyneed intensive sampling and condi-tioning of the gas.

The oxygen measurement systemsfrom METTLER TOLEDO provide theuser with easy-to-use, robust andrugged measurement system formeasurement at the real point ofinterest, inside the process.

N2 Blanketing

3

■ Maintain safe conditions forprocesses hazardous areas

■ Minimize product degredation dueto oxidation

■ Optimized inertization control■ Reduced gas consumption■ Low installation costs■ Fast oxygen monitoring

■ Monitor and adjust oxygen contentfor efficient combustion

■ Guarantee oxygen values belowLOC to avoid explosive atmosphere

■ Rugged measurement■ Fast oxygen detection■ Increased safety■ Maintenance without processinterruption

Off-Gas Monitoring /Vapor Recovery

Inertization

4

Gaseous

OxygenMeasurementSystems In-line Measurement

Bring the Sensor to the gas, not Vice Versa

Gas sampling and conditioningsystems are needed if a sensordoes not withstand the process orenvironmental conditions.

In typical installations, e.g. withparamagnetic sensors, additionalsampling and conditioning systemsare required but installation cost,maintenance effort and the risk offailures of one component increasessignificantly.

METTLER TOLEDO uses oxygenmeasurement system with a robustand easy-to-maintain design. Noconditioning is needed in mostcases and even if conditioning isrequired, it is significantly lesscomplex than existing installations.

Amperometric oxygen sensors from METTLER TOLEDO don’t need a gasconditioning system in a wide range of applications. The robustness andhigh accuracy in aggressive processes allows direct installation.

Your benefits

Plug and measureThanks to the ISM® technology (Intelli-gent Sensor Management), sensorscan be replaced within one minutewithout process interruption.

Enhanced process reliabilityThanks to ISM, gas-phase sensorsmonitor themselves in real-time forearly signs of failure.

Better process controlFast and direct O2 monitoring reducesinertization gas consumption.

Minimum maintenance effortLonger maintenance intervals due tolow drift, leading to lower operationcosts.

5

A Proven Solution for Real In-line MeasurementCase Studies

Company xxxxxxProcess Polymer production

Headspace blanketing

Result Inline measurement allows for reduction ofN2 consumption by 80%Product yield andquality was increased by 10 to 20%.

Since many years in-line O2 measurement from METTLER TOLEDO isproven as a reliable and robust technology. Hundreds of customers areconvinced that amperometric technology is the simplest and thus mostreliable solution.

Company xxxxxxProcess Penicillin purification centrifugation

Result Direct installation of the sensor inside thecentrifuges reduces the installation costsby 90% and allows for reduction of the N2consumption by 70%.

Company xxxxxxProcess Chemical synthesis processes off-gases

Result The rugged sensor design allows for longmaintenance intervals and reduces mainte-nance costs by 80%.

6

ISM/ iSenseTogether withiSense, a PCbased assetsuite, all sensorinformation can be monitored overthe whole lifetime of the system.Calibration can be done in the laband all relevant data are stored in adatabase.G

aseous

OxygenMeasurementSystems Modular System

Fulfilling Your Individual Requirements

SensorA wide range of differentsensors is available in variousmaterials for direct installationin aggressive processes.

TransmitterA transmitter delivers the measure-ment value, system status and sen-sor diagnostics and offers differentcommunication options to the DCS.Mettler-Toledo Ingold offers anextended portfolio in loop- andmain-poweredsolutions, also forhazardous areaapplications.

The modular design of an oxygen gas measurement system consists ofonly 3 main components: Sensor, process connection and transmitter.The modular design allows for a customized setup.

Process connectionsWith the use of a retractablehousing, sensor check andmaintenance or replace-ment can be performedin a minute withoutprocess interruptions.

AirCheck™The system together with aretractable housing allows forautomated sen-sor check toensure best per-formance.

Measurement range 0 to 100%Detection limit 5 ppmSensor material Stainless steel /

C22O-rings Silicone /Kalrez

Cathode Electrolytelayer

Silicone

Steel mesh

e–

e–

PTFE

Do you know how it works?

Amperometric oxygen measurementThe oxygen measurement system isseparated from the sample gas by oxy-gen permeable membrane. Most com-ponents with potential interferences cannot pass the membrane.At the cathode, oxygen is chemicallymeasured as a current to calculate theoxygen partial pressure.

7

METTLER TOLEDO’s SolutionImagine: Oxygen Measurement Without Sampling

The simplicity of METTLER TOLEDO’s oxygen gas solution offers a new levelof reliability in oxygen monitoring. Without complicated and maintenance-intensive conditioning sytem, the advantages of direct measurement canbe turned into tangible results.

2

TransmitterValve

Pump

Flow Meter

Filter

Washer

Cooler

Analyzer

N inOff-Line

O2

F

erTransmitte

NEW! Real In-Line Measurement„Bring the Sensor to the Sample“

Conventional Process Installation

SimplicityThe new real measurement looponly needs a process connection,a sensor and a transmitter.

System integrationDifferent communications to thecontrol system based on analog(4… 20 mA) or digital bus proto-cols via HART®, PROFIBUS® PAor FOUNDATION fieldbus ensureseamless integration into processcontrol systems.

www.mt.com/pro

Management Systemcertified according toISO 9001 / ISO 14001

9001certified

ISO14001certified

ISO

Mettler-Toledo AGProcess AnalyticsIm Hackacker 15, CH-8902 UrdorfPhone +41 44 729 62 11Fax +41 44 729 66 36

Subject to technical changes.© 10/2009 Mettler-Toledo AG.Printed in Switzerland. 52 206 475

Visit for more information

Sales and service:

Visit our website for fast and competent information.

■ Support center with easyand free download– Declaration of conformity– Certificates– Description of equipment– User manuals /data sheets

■ For on-line access click on– Contact us– Request more information– Get a quote

■ Country-specific information– Select country/area to get accessto your local support

■ Search functionality– Enter keyword to find requestedinformation

■ Find and download productand application documents– Product News– Industry Newsletters– Application News

Discover more at:

Get On-line Supportvia www.mt.com/pro

Visit our website at any time for fast and competentinformation. The very latest, updated product and supportdocumentation is available in many different languages.

www.mt.com/o2-gas