calibration gases and servicesContents Introduction to EffecTech® Calibration gases 6 Why choose EffecTech calibration gases? 7 EffecTech Reference Gas Mixtures 8 Natural gas and

global leaders in gas measurement

calibration gases and services

A message from the CEO, EffecTech Group

I am passionate about the quality culture that exists in our business. A core value that was created in the beginning has been cultivated and nurtured and now thrives across the entire organisation. As a consequence, the EffecTech® brand is known worldwide for quality and added value. I am convinced the continuing success of the Group is due to this commitment.

EffecTech has pledged to exceed customer requirements and to increase customer satisfaction through a culture of continuous improvement. This commitment is demonstrated through a constant focus on innovation and improvement in the range and quality of our products and services. We do not settle for anything less than excellence in every part of the company and we continually strive to improve our offerings by having the courage to change.

As you browse this brochure you will realise that everything we offer here is covered by one or more of our quality accreditations. We are rightly proud of the success we have achieved in being awarded these badges of quality from the United Kingdom Accreditation Service (UKAS). We are proud of our UKAS logos. So when you see these on our certificates, reports and labels please take a moment to be reassured of our passionate commitment behind these and to remember that our quality is your confidence.

Dr Gavin Squire BSc CChem FRSC

For our latest schedules of accreditation please visit the UKAS website : ukas.org

Accreditations

2 calibration gases and services

Contents

Introduction to EffecTech®

Calibration gases6 Why choose EffecTech calibration gases?7 EffecTech Reference Gas Mixtures8 Natural gas and LNG10 Sulphur and odorant gases11 Continuous Emission Monitoring (CEM) gases12 Refinery and blast furnace gases

Services15 Gas and condensate analysis16 Performance evaluation of analytical instrumentation17 Inspection of gas quality measurement systems18 Proficiency testing schemes20 Flow metering21 Validations for emissions trading requirements22 Consultancy and training23 LNG

3calibration gases and services

About us

UK HeadquartersEffecTech LimitedDove House, Dove Fields, Uttoxeter, Staffordshire, ST14 8HU United Kingdom

e: [email protected]: www.effectech.co.ukt: +44 (0)1889 569229f: +44 (0)1889 569220

IndiaEffecTech Gases Pvt LtdN-163 MIDC Tarapur, Boisar (West), District Palghar 401506, Maharashtra, India

e: [email protected]: www.effectech.co.int: +91 2525 276137f: +91 2525 276827

QatarEffecTech QatarGate 3, Street 42 Salwa Industrial Area,PO Box 16069, Doha, Qatar

e: [email protected]: www.effectech.com.qat: +974 44 604883 f: +974 44 515319

EffecTech® is an independent specialist gas measurement company providing accredited inspection, calibration and testing services to the energy and power industries for gas quality, flow and total energy metering. The group of companies operates from headquarters in the UK, and at key locations in India and Qatar. Our laboratories at all locations provide calibration and testing services within the scope of UKAS accreditation.


Our UKAS schedules of accreditation: effectech.co.uk/schedules

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Calibration gases


Calibration gases

Why choose EffecTech calibration gases?

Quality“World leading quality coupled with

fantastic customer service.”

ISO 17025 accreditation for both primary and secondary standards provides confidence in the high quality gases you will receive from EffecTech.

Delivery“We do everything possible to

get your calibration gas to you when you need it.”

Express delivery for hydrocarbon mixtures is 1 week to UK or ex works Worldwide.

Standard delivery for hydrocarbon mixtures is 2 – 3 weeks, emission gases is 2 – 4 weeks and sulphur mixtures is4 – 5 weeks to UK or ex works Worldwide.

Equipment Calibration gases are provided in a range of sizes and valve connections to suit customer requirements. We also supply gas control equipment with your calibration gas to ensure the integrity of the high quality gas is maintained on delivery to the instrument.

No cylinder rental charge Your cylinder is purchased outright initially with the first mixture and refilled when required at a lower cost. Cylinder pressure tests are included with this service at no extra cost.

Gas mixture shelf life reminderGas mixtures which are not unconditionally stable will be issued with a shelf life. EffecTech send reminders to clients when mixtures approach the end of their shelf lives, thus preventing out of date mixtures being used.

For more information regarding calibration gases visit our website:effectech.co.uk/calibrationgases


Calibration gases

PRGM – Reference gases with the lowest available uncertainties.

In terms of metrological hierarchy, Primary Reference Gas Mixtures (PRGM) sit at the top of the traceability chain and hold the status of the highest quality standards available for use by commercial organisations. They are typically only used for the most sensitive calibrations where the best uncertainty is required. The composition of a primary standard is calculated directly from gravimetry and verified by a large number of analytical measurements in accordance with ISO 6142 Part 1.

PRGMs are typically used by calibration laboratories and specialty gas manufacturers to establish the reference values of their own internal standards through an analytical comparison with the PRGM. These internal standard mixtures are then used routinely to calibrate accredited reference gases or other working gas mixtures sold to customers. By using PRGMs in this way, gas mixtures sold to their client still have acceptably low uncertainties.

SRGM – Secondary Reference Gas Mixtures are prepared gravimetrically by EffecTech and are calibrated against PRGMs where the analytical value and analytical uncertainties are reported on the certificate. SRGMs are the most popular choice of calibration gas as they balance low uncertainties with value for money, especially when supplied in large volume cylinders.

CGM – Calibrated Gas Mixtures are prepared by another third party specialty gas manufacturer and are calibrated by EffecTech using PRGMs. The analytical value and uncertainty are reported on the certificate.

All of the calibration gases shown in this brochure can be supplied by EffecTech as ISO 17025 accredited PRGM, SRGM or through a third party supplier as a CGM.

EffecTech Reference Gas

Mixtures

Accreditations


Calibration gases

Natural gas and LNG

Calibration of gas mixtures in accordance with ISO 6143:2001 using gas chromatography with thermal conductivity detection (TCD) and flame ionisation detection (FID)

componentamount fraction range (% mol/mol)

nitrogen 0.1 to 22

carbon dioxide 0.05 to 15

methane 34 to 100

ethane 0.1 to 35

propane 0.05 to 15

iso-butane 0.01 to 2

n-butane 0.01 to 2

neo-pentane 0.002 to 0.35

iso-pentane 0.005 to 0.35

n-pentane 0.005 to 0.35

n-hexane 0.001 to 0.35

2-methylpentane 0.001 to 0.35

3-methylpentane 0.001 to 0.35


2,2-dimethylbutane 0.001 to 0.35

benzene 0.001 to 0.2

cyclohexane 0.001 to 0.2

n-heptane 0.001 to 0.2

toluene 0.001 to 0.1

methylcyclohexane 0.001 to 0.1

n-octane 0.0005 to 0.05

n-nonane 0.0005 to 0.02

n-decane 0.0005 to 0.005

C6+ 0.001 to 0.35

oxygen 0.005 to 1

helium 0.005 to 0.2

hydrogen 0.005 to 0.2

Experienced staff at EffecTech will design a calibration gas to meet all your needs. We ensure you receive the best solution for your application, drawing on years of experience in the gas industry.

The ranges we offer can be seen in the table below:


Calibration gases

Composition Natural gas composition varies on a global basis from source to source and on a daily and seasonal basis. EffecTech will design a calibration gas to meet all your needs.

Taking into account:

• Variation of delivered composition

• Operational temperature and pressure

• Accuracy needed to make it fit for purpose.

Proposed designs will maximise cylinder fill pressures, where appropriate, through gas liquid phase equilibrium calculations.

Physical propertiesPhysical properties for all calibration gases are included on certificates of calibration.These can be used for measurement confirmation as part of your quality control procedures and validation.

Physical properties of calorific value, relative density, real density, Wobbe index, mean molecular mass and compression factor are calculated from composition according to ISO 6976.

Accreditations

Every certificate of calibration includes a phase diagram calculated using equations of state showing how stated storage and usage temperature have been derived.

Phase diagram of your calibration gas mixture-50

0

10

20

30

40

50

60

pres

sure

/ ba

r

70

80

90

100

110

120

130

-40 -30 -20

temperature / ºC-10 0 10

hydrocarbon dewline Joule-Thomson cooling curve


Calibration gases

Sulphur and odorant gases

componentamount fraction range (µmol/mol)

hydrogen sulphide 0.2 to 200

carbonyl sulphide 0.2 to 200

methanethiol (methyl mercaptan)

0.2 to 200

ethanethiol (ethyl mercaptan)

0.2 to 200

dimethyl sulphide 0.2 to 200

1-propanethiol (n-propyl mercaptan)

0.2 to 200

2-propanethiol (iso-propyl mercaptan)

0.2 to 200

ethyl methyl sulphide (methyl ethyl sulphide)

0.2 to 200

1-butanethiol (n-butyl mercaptan)

0.2 to 200

2-methyl-2-propanethiol (tert-butyl mercaptan)

0.2 to 200

2-methyl-1-propanethiol (iso-butyl mercaptan)

0.2 to 200

1-methyl-1-propanethiol (sec-butyl mercaptan)

0.2 to 200

diethyl sulphide 0.2 to 200

n-hexyl mercaptan 0.2 to 200

tetrahydrothiophene (THT) 0.2 to 200

Sulphur gas mixtures are used in process control for network entry/exit requirements.

EffecTech’s accredited sulphur mixtures are traceable to international standards.

Due to the reactive nature of sulphur components, each standard is calibrated twice, a week apart, to ensure the stability of the gas mixture.

Binary or multi-component mixtures are available in methane, nitrogen or natural gas matrices.

The ISO 17025 accredited calibration gases we provide are included in the table:

Calibration of gas mixtures using gas chromatography with sulphur chemiluminescence detection (SCD)

Accreditations


Calibration gases

Continuous Emission Monitoring

(CEM) gases

componentamount fraction range (mol/mol)

methane 0.1 to 5%

carbon monoxide 10 ppm to 1000 ppm

carbon dioxide 0.1% to 15%

oxygen 0.5% to 25%

nitric oxide 10 ppm to 600 ppm

nitrogen dioxide 10 ppm to 500 ppm

sulphur dioxide 5 ppm to 1000 ppm

Calibration of gas mixtures using dynamically generated reference gases in accordance with ISO 6145 Part 7: Thermal Mass Flow Controllers

Binary and multi-component gas mixtures in a nitrogen or air balance (where possible) are calibrated for continuous emission monitoring (CEM) and personal monitoring systems.

CEM gases are used for regulatory and Integrated Pollution Prevention and Control (IPPC) requirements.

EU directives state a requirement for ISO 17025 certified calibration gases for QAL 2 (Quality Assurance Level 2) and AST (Annual Surveillance Test).

Such gases are also used for regulatory monitoring of portable and fixed point gas sensors.

These gases are provided in a range of cylinder sizes and valve connections depending on local requirements.

Accreditations


Calibration gases


nitrogen 40 to 50

carbon dioxide 20 to 30

hydrogen 1 to 8

carbon monoxide 20 to 30

Blast furnace gases are used for process control and emissions trading requirements in iron and steel manufacturing.

Large quantities of carbon (CO and CO2) are produced in blast furnaces and require measurement for process control and EU/ETS requirements.

The range of blast calibration gases available are:

Refinery and blast furnace gases


nitrogen 0.1 to 10

carbon dioxide 0.1 to 3

carbon monoxide 0.1 to 8

hydrogen 10 to 70

methane 10 to 65

ethane 0.5 to 28

ethene 0.5 to 12

propane 0.1 to 10

propene 0.1 to 5

Refinery gases are used for process control, fuel applications and emissions trading requirements.

Refinery gas composition varies considerably depending on the process. EffecTech designs and prepare traceable refinery reference gases tailored to your needs.

The range of refinery calibration gases available are:

Calibration of gas mixtures in accordance with ISO 6143:2001 using gas chromatography with thermal conductivity (TCD) and flame ionisation detection (FID)

Calibration of gas mixtures in accordance with ISO 6143:2001 using gas chromatography with thermal conductivity (TCD)

Accreditations


Calibration gases

ISO 17025 calibration

ISO 17020 inspection

ISO 17043 proficiency testing

ISO 10723 gas chromatograph performance evaluation

Seeking excellence for your energy measurement through accreditation


Calibration gases

Services


Services

Gas and condensate

analysis

EffecTech® provides an ISO 17025 accredited testing service for the analysis of natural gas and condensate samples.

Adding value to this service, we provide a considered interpretation of analytical data, which is fit for purpose, with an understanding of how the measurement will be used by the customer in making key decisions about their business.

Such data provided by EffecTech will ensure that you:

• Can calculate efficiencies of the power generation processes you are using

• Can present data to your business partners which will stand up to external scrutiny used in custody transfer and allocation measurement systems

• Are getting value for money on the gas you are supplied.

Testing services24 Hour express analysisResults are issued within 24 hours of the sample arriving at our ISO 17025 accredited laboratory. For hydrocarbon and sulphur analysis. • Natural gas up to C12, nitrogen,

carbon dioxide, oxygen, argon, hydrogen and helium

• Condensate analysis, both pressurised and stabilised up to C36, nitrogen and carbon dioxide

• Sulphur content (hydrogen sulphide, ethyl mercaptan).

48 Hour standard analysis Results are issued within 48 hours of the sample arriving at our ISO 17025 accredited laboratory.

Site sampling and trainingWe offer a site sampling and training service where an EffecTech engineer will visit your site to take a sample of gas for immediate analysis at our ISO 17025 testing laboratory.

For more information visit: effectech.co.uk/testingAccreditations


Services

EffecTech provides inspections and performance evaluations on gas quality measurement systems and process gas chromatographs in accordance with the international standards ISO 17020 and ISO 10723.

Our highly trained and experienced staff provide fast and effective solutions to your fiscal, regulatory, contractual, safety and environmental gas measurement obligations.

Performance evaluation according to ISO 10723:2012EffecTech leads the world in providing ISO 17025 accredited on-site calibration through performance evaluation.This enables clients to demonstrate compliance with the strictest fiscal metering requirements.

EffecTech evaluates the performance of an instrument to:

• Determine errors, bias and uncertainty of the measurement

• Re-calibrate response functions (MLCs) for correcting non-linear response characteristics

• Design the most appropriate calibration gas composition for your needs.

The objective of the performance evaluation is to assess the instrument’s performance against the requirements of:

• Repeatability of measurement

• Maximum Permissible Errors (MPE)

• Maximum Permissible Bias (MPB).

Performance evaluation of analytical instrumentation

Why do I need a quantitative performance evaluation?• To improve fiscal gas quality metering

• To conform with EU emissions trading legislation

• To validate your analytical system

• To reduce financial exposure from mismeasurement


Services

ISO 17020 inspection of gas quality measurement systemsA review of the entire gas quality measurement chain covers:

• Sampling

• Sample conditioning

• Calibration

• Analysis

• Physical property calculations

• Staff training

• Quality control

• Maintenance

The analytical system is scored objectively against industry standard best practices. The report makes recommendations, where appropriate, to improve the measurement system.

As part of our service we include free telephone support and advice including:

• Analytical procedures including calibration gas composition

• Quality control procedures

• Refinement of parameters to improve gas quality measurements.

For more information visit: effectech.co.uk/siteservices

By investing in annual inspections and site calibrations provided by an independent specialist company, the traceability and accuracy of your data is guaranteed and the quality of the data generated will be greatly improved. The improvement in quality will increase the confidence in the analytical results which are used to calculate the physical properties and ultimately the commercial value of the gas.

Accreditations

Inspection of gas quality measurement

systems


Services

Proficiency testing schemes

EffecTech provides the Global Gas and LNG (GGLNG) proficiency testing scheme.

The scheme operates in accordance with ISO 17043 (ISO Guide 43) and focuses on the natural gas and LNG industries. Up to 4 different gas mixtures are sent to the participating laboratories for analysis. The scheme is run on a quarterly basis giving regular opportunities for participation.

componentLNG composition (% mol/mol)

propane composition (% mol/mol)

mixed refrigerant (% mol/mol)

sulphur component mixture (μmol/mol)

ethane 0.1 - 14 0.25 - 3 20 - 35

propane 0.05 - 5 balance 5 - 15

iso-butane 0.01 - 1 0.03 - 1

n-butane 0.01 - 1 0.03 - 1

iso-pentane 0.005 - 0.35 0.02 - 0.08

n-pentane 0.005 - 0.35 0.02 - 0.08

n-hexane 0.001 - 0.35

nitrogen 0.1 - 8 0.1 - 3 4 - 16

carbon dioxide 0.05 - 8

methane balance balance balance

hydrogen sulphide 0.2 to 10

carbonyl sulphide 0.2 to 10

methyl mercaptan 0.2 to 10

ethyl mercaptan 0.2 to 10

dimethyl sulphide 0.2 to 10


Services

Bilateral proficiency testing schemesEffecTech also provides bilateral proficiency testing schemes. Gas mixtures are provided to a client for ‘blind’ measurement. After measurement and reporting of results, a short report is issued and then an ISO 17025 certificate is issued for the gas mixture(s). This mixture can then be used for quality control and to provide traceability to working standards.

For more information visit: effectech.co.uk/proficiencytesting

Key features of the PT scheme are:

• A quantitative assessment of a laboratory’s capability and performance

• An objective means of assessing and demonstrating the accuracy of your measurements

• An assessment of a participant’s performance in relation to other laboratories.

Accreditations

Benefits of participation in the GGLNG scheme:• identify potential commercial risks and

staff training requirements

• validation of your analytical methods, identifying specific areas where improvement can be made

• following publication of results ISO 17025 accredited certificates of calibration can be issued on request for your PT items so they can be used for on-going calibrations

• improvement is sought from both poorly performing participants and in the overall performance of all participants

• regular participation in PT schemes is required by accreditation bodies when assessing laboratories against ISO 17025.


Services

Flow metering

A metering system validation will reduce exposure to commercial risk created over time by over or under measurement of gas volume.

• Gas volume uncertainties are the dominant factor in the metering of energy. Regular validations will reduce mismeasurements and unaccounted for gas

• ISO 17025 accredited for on-site calibrations of temperature, pressure and differential pressure ensuring traceable validations with defined uncertainty

• Financial confidence in billing of gas

• We operate a re-calibration database and will remind clients of forthcoming instrument calibrations.

Primary instrumentationOrifice plates must be inspected, cleaned and regularly re-certified by an accredited laboratory. Turbine and ultrasonic flow meters can be validated in-situ by monitoring various operating parameters. They are also removed periodically and sent to an accredited calibration facility for re-calibration with high pressure natural gas.

Secondary instrumentationOn site differential pressure (DP), pressure and temperature transmitters are calibrated according to our ISO 17025 accredited calibration scope ensuring a high standard of accuracy and traceability.

Flow computer Functions and calculations are verified against independent off-line calculations to ensure they are correct. In addition, constants and system data such as orifice plate, pipe sizes and gas composition dependant factors entered into the flow computer are verified.

For more information visit: effectech.co.uk/flow

Accreditations


Services

Validations for emissions trading

requirements

Any industrial installation in the EU emitting significant quantities of carbon dioxide is subject to the monitoring and reporting requirements as outlined in the Commission’s “Monitoring and Reporting Regulations (MRR)” of the EU Emission Trading Scheme (EU/ETS).

EffecTech provides services for clients necessary for compliance with the EU/ETS.

• On site ISO 17025 accredited calibration of your on-line process instruments. For natural gas fuel measurement, the evaluation is carried out according to ISO 10723:2012

• The MRR also specify required measurement uncertainties which vary depending on the process and industrial sector. In the natural gas fuelled power station sector, category C emitters are required to demonstrate an uncertainty of <1.5% relative for their measurement of carbon dioxide emissions

• An ISO 17025 calibration certificate is required by the verifiers to show compliance with the MRR

• An ISO 17020 inspection report outlining the suitability of the entire measurement system

• ISO 17025 accredited calibration gases

• ISO 17025 accredited testing of fuel gas samples collected from site.

The EU/ETS directive requires that measurements of carbon dioxide and their uncertainties be reported in accordance with the “Guide to the expression of uncertainty in measurement” (GUM) so that uncertainties can be directly compared without fear of differences arising due to the instrumentation or calculations used.


Services

Consultancy and training

EffecTech® has built an excellent reputation through strengths in knowledge and experience of the gas industry.

Our highly trained and experienced staff are able to provide consultancy and training programmes tailored specifically to your needs.

EffecTech offers:

• Advice and consultancy on all elements of gas quality measurement

• Gas quality / LNG research projects

• New instrument evaluation / factory performance evaluation

• Independent data processing and evaluation

• Training in gas chromatography, gas quality, flow measurements and uncertainty calculations

• Audits and inspections of laboratory quality systems. Accreditations


Services

LNG

World’s First Traceable Cryogenic LNG Reference Liquids Developed at EffecTech

EffecTech has developed a bespoke cryostat facility for the production of cryogenic LNG reference liquids. Composition measurements made on the re-vapourised samples are compared with the reference gas values to determine any differences.

These differences in composition are quantified and the results are compared to the requirements of the vaporisation testing standard EN 12838:2000

The principal use of the cryostat is as a calibration device where instrument probes can be inserted into the cryostat so direct measurements of LNG inside the cryostat can be made to calibrate or validate the instrument.

A transportable version of the cryostat is under development providing calibrations and validations in situ at customers site.


Services

e: [email protected]: www.effectech.co.ukt: +44 (0)1889 569229

EffecTech (United Kingdom) Dove House, Dove Fields, Uttoxeter, Staffordshire, ST14 8HU United Kingdom

EffecTech also operates laboratories in key locations in India and Qatar.


Documents

calibration gases and servicesContents Introduction to EffecTech® Calibration gases 6 Why choose EffecTech calibration gases? 7 EffecTech Reference Gas Mixtures 8 Natural gas and