Metreg MQMe User Instructions
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Metreg MQMe User Instructions

Quantometer with electronic meter index
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User Instructions
MQMe
Quantometer with electronic
meter index

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Summary of Contents for Metreg MQMe

  • Page 1 User Instructions MQMe Quantometer with electronic meter index...

  • Page 2: Table Of Contents

    9.3 Communications data interface ..............................21 10 Connections ................................23 10.1 MQMe without 4 – 20 mA, with external supply for the MQMe ..................23 10.2 MQMe with external power supply for 4–20 mA and MQMe ................... 23 10.3 MQMe with battery without external power supply for 4–20 mA ................. 24 10.4 MQMe operation in the Ex zone..............................
  • Page 3 11.6 Resetting the Volume Counter ..............................28 12 Measuring Points Pressure und Temperature..................... 29 13 Cleaning ..................................30 14 Transport and Storage ............................. 30 15 Außerbetriebnahme ..............................30 16 Disposal..................................30 17 Annex A ..................................31 18 Annex B ..................................33 19 MQMe specification ..............................34...

  • Page 4: General Information

    Only specialists, trained and qualified personnel (e.g. DVGW G 492 and G 495), may carry out work on the MQMe. The manual contains all information required to ensure safe and proper use of the device. Safety Symbols The following symbols are used in this manual to indicate hazards or to provide information to assist the operators.

  • Page 5: Intended Use

    Any guarantee beyond this requires a contract and excludes software updates, consumables and vandalism to components. Applications for the MQMe Quantometer The MQMe Quantometer is designed for metering the volume of natural gas used within a company and is approved in accordance with European Regulation 2014/68/EU.

  • Page 6: Design Of The Mqme Quantometer

    Flow straightener Measuring cartridge Measuring unit Fig. 1: Sectional drawing of the MQMe Quantometer In the case of failure or damage: Repairs may be carried out solely by qualified and authorized service centers and after prior consultation with Metreg Technologies GmbH.

  • Page 7: Technical Data

    Analog output (option) 4–20 mA output (only with external power supply) Data communication RS485 interface (option) Modbus RTU (only with external power supply) M-Bus interface (option) M-Bus Frequent data retrievals on an MQMe in battery mode will affect battery life.

  • Page 8: Working Range And Pulse Weighting Data

    DN150 Flange 1.000 DN150 16 bar 5.100–5.400 318–386 MQMe 1.000 DN150 Flange 1.600 DN150 16 bar 5.100–5.400 318–386 * The precise number of HF pulses is dependent on the meter size and the calibrated meter itself. The stated values are typical numbers.

  • Page 9: Installation

    • Observe DVGW rules and regulations. Observe national regulations. • Carefully observe these operating instructions. The following instructions are intended to support smooth installation of the MQMe Quantometer in the measuring system in order to prevent damage. 1. Remove the protective film from the inlet and outlet of the meter.

  • Page 10: Installation Location/Direction Of Flow Of The Gas

    Typical vertical installation of the MQMe The specified gas flow direction must be observed. Possible damage to the MQMe caused by excessive temperatures When the MQMe is installed, welding work on the pipe system in the vicinity of the MQMe is not permitted.

  • Page 11: Required Material

    Required material • Suitable and certified gaskets according to DIN EN 1514-1 • Screws according to DIN 976 DIN ISO 4014 and ASME B 1.1 • Nuts according to DIN 934 DIN EN ISO 4032 and ASME B 1.1 • Washers according to DIN EN ISO 7085 (DIN 125) •...

  • Page 12: Installation Process

    4. Ensure that the seals are mounted concentrically so that no seal parts protrude into the pipeline. 5. In addition to the length of the MQMe, provide enough room for the two gaskets between the inlet and outlet flanges for the installation.

  • Page 13: Changing The Turning Range

    6.4.3 Changing the turning range The MQMe has a rotatable display with a turning range of 180°(A). The angle of rotation can be changed to the other 180°(B) by turning the base by 180°. Loosen the 3 radial stud screws (1) on the base of the meter index head.

  • Page 14: Commissioning

    15. 2. For filling of the gas line, carefully open the shut-off valve directly upstream of the MQMe (Fig. 2 and Fig. 3) until the operating pressure is reached. The rate of increase in pressure should not exceed 350 mbar/s.

  • Page 15: Maintenance/Lubrication

    8.2.1 Lubrication during commissioning It is recommended that you use only oil sold by Metreg Technologies GmbH. A bottle of oil for the initial commissioning is supplied with the MQMe. Approved oils are: Shell Morlina S2 BL 5 or Shell Morlina S2 BL 10.

  • Page 16: Electronic Meter Index

    If no pressure and temperature sensor was selected in the configuration of the MQMe, the substitute values are displayed. These must be known when ordering the MQMe. If the MQMe is equipped with pressure and temperature sensor, the last valid measured value is displayed in case of failure of a sensor.

  • Page 17: Display Symbols

    9.1.3 Power Supply The MQMe is powered by an internal 3.6 V lithium battery with a power consumption of <0.7 mW or by a direct 24 VDC mains supply. The calculated service life of the lithium battery under standard conditions (temperature 5–25°C/41–77°F) is 5 years. The charging status of the battery is shown on the LCD display.

  • Page 18: Replacing The Battery

    Replacing the Battery Ensure the following before changing the battery: • Use only special lithium batteries by Metreg Technologies GmbH. The batteries are equipped with a plug that prevents mix-up of the connections. • For systems in hazardous areas, only a person trained in explosion protection may replace the battery.
  • Page 19 Battery Fig. 9: Battery position Battery Plug 3. Pull off the plug (5) with the black and red cable. 4. Plug the plug (5) of the new battery in the connector. 5. Position the new battery in the battery holder. 6.

  • Page 20: Integrated Volume Corrector With Compressibility Factor Calculation

    The calculation of compressibility and state number is based on standard pressure and standard temperature. The standard temperature is not identical in all countries. Any deviations from the local standard values (101.325 kPa and 0°C = 273.15 K) for the country in which the MQMe is to be used must be known.

  • Page 21: Communications Data Interface

    The maximum deviation is: ±0.5% FS. See also section 10 “Connections”, page 23. Output pulses of the pulser The standard version of the MQMe is equipped with an integrated LF pulser output or an HF pulser output. The HF pulser can determine the current gas flow at high resolution.
  • Page 22 Important for obtaining ATEX approval All of the pulsers are intrinsically safe. If the MQMe is installed in a potentially explosive atmosphere, connections to devices such as volume correctors or station computers that are located outside the potentially explosive atmosphere may be established only via intrinsically safe circuits.

  • Page 23: Connections

    10 Connections * HF and LF signal cannot be used simultaneously. 10.1 MQMe without 4–20 mA, with external supply for the MQMe RS-485/M-Bus External connections MQMe 24 V External power Depending on the design, see detail - supply switching example MQMe LF/HF signal...

  • Page 24: Mqme With Battery Without External Power Supply For 4-20 Ma

    10.3 MQMe with battery without external power supply for 4–20 mA e.g.: 4-20 Ampere meter or SPS analog input External connections MQMe RS-485/M-Bus 24 V External power Depending on the design, see detail - supply switching example MQMe LF/HF signal...

  • Page 25: Switching Example For The Mqme Lf And Hf Output

    10.5 Switching example for the MQMe LF and HF output Phoenix Contact Phoenix Contact PLC-BSC-24VDC PLC-BSC-24VDC OPT-24DC/48DC/100 REL-MR-12DC/21 OBIC0100-5-24VDC (29 66 618) (29 61 150) 24VDC ABB/1SNA645021R2600 24VDC 24VDC V- (GND) Only suitable for LF MQMe (detail) 24VDC LF (HF)*...

  • Page 26: Parameter Setting

    11.2 Preparation The four buttons underneath the front screw-on cover on the meter index head can be used to adjust the settings directly on the MQMe. To reach the buttons, proceed as follows: 1. Remove the seal between the front and rear screws on the cover for the electronic meter index.

  • Page 27: Changing The Maximum Value For The 20 Ma Current Output

    11.4 Changing the maximum value for the 20 mA current output Set the desired measuring range using the 4 buttons: Input/output Action Display 1. Press INC, 5 x SET and A_000000 1 x SHT. Flow at 20 mA Example: A_002500 = 2.500 m (flow at 20 mA) •...

  • Page 28: Resetting The Volume Counter

    11.6 Resetting the Volume Counter Reset the counter. Input/output Action Display 1. Press SET. PASS_0000 User password 1 • No entry is required. 2. Press SET. 000000000 Volume under measuring conditions • Change the digit with INC. • Change the position with SHT. The decimal places cannot be changed.

  • Page 29: Measuring Points Pressure Und Temperature

    Temperature measuring point for natural External HF sensor Reference pressure measuring point Flow direction Fig. 12: MQMe DN25 position of the measuring points Reference pressure measuring point Pressure measuring point for natural gas Temperature measuring point for natural External HF sensor Flow direction Fig.

  • Page 30: Cleaning

    14 Transport and Storage The MQMe and all its accessories should be stored in their original packaging. Ensure that the meter is secured to prevent it rotating or slipping. Take special care when loading and transporting the meter to the installation location.

  • Page 31: Annex A

    17 Annex A CE Declaration of Conformity...
  • Page 32 UKCA marking...

  • Page 33: Annex B

    18 Annex B The external pulser, which directly scans the turbine wheel, has its own ATEX approval with the following markings: HF pulser Proximity switch PTB 01 ATEX 2192 IECEx PTB 08.0058 According to NAMUR specifications II 1G Ex ia IIC T6 Ga Ta: -25°C to +55°C II 1G Ex ia IIC T5 Ga Ta: -25°C to +60°C II 1G Ex ia IIC T4 Ga Ta: -25°C to +70°C Ex ia IIC T6 Ga Ta:...

  • Page 34: Mqme Specification

    19 MQMe specification Order no. Item no. Mandatory information ☐ ☐ ☐ ☐ ☐ ☐ Nat. gas Propane Butane Liquid gas Liquid gas + up to 20% hydrogen Medium ☐ Biogas - maximum sulfur content [%] - maximum ammonia content [%] - rel.
  • Page 35 * Parity none even Additional specification 1. Gas composition (Factory setting for natural gas: relative humidity: 0.65; nitrogen: 0.8 mol%; carbon dioxide: 0.2 mol%) MQMe setting range: Relative density [-] (0,55–0,75) Nitrogen [mol%] (0,28–0,86 Mol-%) Carbon dioxide [mol%] (0,0–0,2 Mol-%)
  • Page 36 Your contact: Metreg Technologies GmbH Neckaraue 9 71686 Remseck Phone +49 7142 9191-590 Fax +49 7142 9191-599 info@metreg-technologies.de www. metreg-technologies.de MQMe_Manual_EN_04/2023 © 2023 Metreg Technologies GmbH All rights reserved. Subject to technical changes. www.metreg-technologies.de...

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