Issue Date: Valid Until: Reference No:

24 March 201623 MarchTS21/00

P R Dixon Technical Services DirectorFor and on behalf of the Chief Executive

National Measurement and Regulation Office I Stanton Avenue I Teddington I TW11 OJZ I United KingdomTel +44 (0) 20 8943 7272 I Fax +44 (0) 20 8943 7270 I Web

The NMRO is an Executive Agency of the

EC type-examination certificate UK/0126/0200 issued by:

National Measurement Notified Body Number 01

In accordance with the requirements of the Measuring Instruments) Regulations 2006 (SI 2006/1270) which implement, in the United Kingdom, Council Directive 2004/22/EC, this certificate of EC typebeen issued to:

Newflow Limited George House Derwent Road Malton North Yorkshire, YO17 6YBUnited Kingdom In respect of: Electronic Gas Conversion, Characteristics:

Mechanical environment class:Electromagnetic environment class:Temperature range ambient:Humidity:

Further characteristics are provided in the Descriptive Annex of this certificate.

The National Measurementthis certificate.

24 March 2016 March 2026 1/0002

Technical Services Director For and on behalf of the Chief Executive

National Measurement and Regulation Office I Stanton Avenue I Teddington I TW11 OJZ I United KingdomTel +44 (0) 20 8943 7272 I Fax +44 (0) 20 8943 7270 I Web www.gov.uk/nmro

The NMRO is an Executive Agency of the Department for Business Innovation and Skills

examination certificate

National Measurement and Regulation Office Notified Body Number 0126

In accordance with the requirements of the Measuring Instruments (NonInstruments) Regulations 2006 (SI 2006/1270) which implement, in the United Kingdom, Council Directive 2004/22/EC, this certificate of EC type

YO17 6YB

Gas Conversion, Indicating and Calculating Device -

Mechanical environment class: M1 Electromagnetic environment class: E2 Temperature range ambient: 5 °C to 55 °C Humidity: Non Condensing

Further characteristics are provided in the Descriptive Annex of this certificate.

The National Measurement and Regulation Office holds documents appertaining to

UK/0126/0200

MI-002

0135

National Measurement and Regulation Office I Stanton Avenue I Teddington I TW11 OJZ I United Kingdom

Instruments (Non-Prescribed Instruments) Regulations 2006 (SI 2006/1270) which implement, in the United Kingdom, Council Directive 2004/22/EC, this certificate of EC type-examination has

NÅNO211-MID

5 °C to 55 °C Non Condensing

Further characteristics are provided in the Descriptive Annex of this certificate.

Office holds documents appertaining to

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Descriptive Annex 1 INTRODUCTION

This certificate describes an electronic indication and calculating device intended for the processing of gas flow calculations and conversions as described in section 2.3 An example of the system architecture is shown in Figure 1.

2 CONSTRUCTION 2.1 Prime Parts with Metrological Function The specific part number for the hardware is NÅNO211-MID running the GDP-MID application. Any 12V or 24V DC CE marked DC power supply.

2.1.2 The NÅNO has the following I/O available

• 1 RS232 Serial Port • 1 RS422 Serial Port • 1 RS485 Serial Port • 2 Ethernet Ports • 9 Digital Inputs • 6 Digital Outputs • 2 Pulse Outputs • 1 Dual Pulse Input • 2 Period/Density Measurement Inputs • 6 Analog Inputs • 2 RTD Inputs (each uses one Analog Input) • 2 Analog Outputs • 1 Alarm relay with both Form A and Form B contacts • 1 Raw Pulse bus bi-directional I/O

In addition, there is the facility for SD memory cards and USB for external expansion.

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2.2 Software The approved calculation blocks can be displayed via the MID Gas DP Application Constants Log (Home→ Logs & Trends → Constants Log) The modules were verified using the Newflow Gas DP Rev 07 application, as shown on the System Information page (Home → System → System Information). See NÅNO User Interface Manual. Application Name Newflow Gas DP Rev 07 Application Version 7v0r41 Application Setup Metric Application Checksum 674CC498CA23245B Metrology Checksum 000000017C5D9BE6 Approved Metrology Modules and their Software Checksums AGA8_1992 [checksum bd7afcd24a2c7cefc7b92ee4410367b1]

AGA Report No. 8, Compressibility Factor of Natural Gas and Related Hydrocarbon Gases (1992).

SGERG_88 [checksum 883ac08c2ba383d2487048f43b000146]

The Standard GERG 88 virial equation of state for compressibility factor.

AGA5_2009 [checksum a6cc129ee704c4a58b6c54b0230c1286]

AGA Report No. 5, Natural Gas Energy Measurement (2009) for calculation of the heating value.

GPA_2172_09 [checksum 81b4041a975c78c876eecdc8645c98c3]

GPA Standard 2172 (2009) Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures.

ISO6976_1995 [checksum 85edc1008aa82935352123544de5bca6]

ISO 6976 (1995) Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition.

ISO5167 [checksum 5a33f1a576c04c9946f7ff6d922c430c]

ISO 5167 (1991, 1998 or 2003) Measurement of Fluid flow by means of pressure differential devices.

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AGA3_2003 [checksum 4f5aef951f5a4782dccdc73ecd03a1ac] AGA Report No. 3 (2003) Orifice metering of natural gas and other related hydrocarbon fluids.

Gas Totalising [checksum a0aeafcf0143f1ec724ddd6bdcbc4649]

The Gas Totalising block integrates the multiple calculated flow rates into check-summed totals and remainders, maintaining very high resolution over a wide number range.

2.3 Programming and Conversions 2.3.1 Calculations Mass Flow Rate is derived from the differential pressure utilising ISO 5167 (1991, 1998 or 2003) or AGA 3:2003. Heating values are derived using ISO 6976:1995 or AGA 5:2009. Compressibility factors are calculated using SGERG88 or AGA 8:1992, with GPA 2172:2009 as an alternative for both heating value and compressibility factor. The results of the various calculations are integrated by the Gas Totalising module which generates totals for mass, gross volume, standard volume and energy. 2.3.2 Conversions SGERG_88 Generate a compressibility factor from molar gas

composition. AGA5_2009 Calculates a heating value from gas composition and base

temperature and pressure.

GPA_2172_09 Calculates both heating value and compressibility factor.

ISO5167 Calculates the mass flow rate through the differential pressure meter.

AGA3_2003 Calculates the mass flow rate through the differential pressure meter.

The system is also capable of performing the following conversions which are not covered by this approval: AGA8 GS The AGA 8 Gross Method generates a compressibility factor

and density for gases within a restricted composition range (the normal range) and with limited temperature and pressure ranges.

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AGA8 DL The AGA 8 Detail Method generates a compressibility factor and density from the full molar gas composition (expanded range) over a wide range of temperature and pressure.

ISO6976 Calculates the calorific value and Wobbe Index from gas

composition. 2.3.3 Essential Characteristics Conversion is based on differential pressure developed across a restriction together with the measured gas temperature and measured gas pressures. Other legal items, such as checking of data integrity and parameter seals. Calculation of batch totals and periodic totals. 2.3.4 Security Various levels of passwords can protect parameter settings. All legal parameters are protected by the highest level password. This highest level password acts as the W&M password and the W&M switch has to be set in order to change the W&M parameters. The access to the switch is restricted by the stainless steel lid, and the lid can be secured by either an anti-tamper lead seal or self-adhesive tamper-proof seal.

Alarms and events are also logged in special files. 2.4 Housings The NÅNO211 components are all mounted in a housing (minimum IP20 rating) that is locked, to ensure cables cannot be removed or re-routed. This cabinet may also be sealed if required. 2.5 Display and Reports 2.5.1 NÅNO211 Interface The basic display shows for one meter however the system can be configured to custom displays for more meters. All the displays are Web based, the minimum browser specification is: World Wide Web Consortium (W3C) HTML 4.01 Specification, 24 December 1999 2.5.2 Reports The following reports can be produced automatically by NÅNO211-MID:-

• Monthly

• Daily

• Hourly

• Snapshot

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3 MARKING 3.1 Type Plate The cabinet carries a type plate with the following information:

‘CE’ marking Supplementary metrology marking Notified body identification number Serial number Manufacturers mark or name Certificate number

3.2 SEALING The electronic parameters are protected as per section 2.3.4. These are set at initial setup/verification. The enclosure should match the specification laid out in section 2.4. 4 SUPPORTING DOCUMENTATION

• MI-002 checklist • Software checklist • Documentation file, TRIM File TS21/0002/3

5 ILUSTRATIONS Figure 1 Example of System Figure 2 Typical Typeplate layout 6 CERTIFICATE HISTORY

ISSUE No. DATE DESCRIPTION

UK/0126/0200 24 March 2016 Certificate first issued

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Figure 1 Example of System

Figure 2

Crown copyright 2016 National Measurement and RegulationDepartment for Business, Innovation & SkillsThis material may be freely reproduced except for sale.

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Figure 2 Example of System

and Regulation Office for Business, Innovation & Skills

This material may be freely reproduced except for sale.