Thermal Mass Metering Technology AERIUS Gas Meter International Congress and Exhibition on Smart...
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Thermal Mass Metering Technology AERIUS Gas Meter International Congress and Exhibition on Smart Grids Istanbul 2013
Transcript of Thermal Mass Metering Technology AERIUS Gas Meter International Congress and Exhibition on Smart...
Thermal Mass Metering Technology
AERIUS Gas Meter
International Congress and Exhibition on Smart Grids
Istanbul 2013
Agenda
• Diehl-Group & Corporate Division Diehl Metering
• Diehl Gas Metering
• Thermal Mass Meter AERIUS: Principle & Technical Details
• AERIUS: Added Value
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Diehl: Corporate Profile
Sales: 2,9 Billion € *
Employees: 14.500 *
Head office:Nürnberg
Family-owned company since 1902
* Trends 2012
Corporate Divisions:
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Diehl Group: Corporate Divisions
Semi-finished products and forged parts of copper and copper alloys
Controls for domestic appliances
Systems for defence and homeland security
Systems to equip cabins and avionics
Water & Energy Metering as well as Smart Metering solutions
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Corporate Division: Diehl Metering
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Corporate Division Diehl Metering: Key Figures
Sales: 265 Million Euro
Employees: 2,000
6.5 Mio Measuring Units p. a.
4.1 Mio Radio Modules p. a.
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Corporate Division Diehl Metering: Locations
Wangen
Milan
Saint-Louis
Ansbach
Mátészalka
Cieszyn
Vienna
Recife
Jinan
Velbert
Production and Sales
Dubai
Esbjerg
Lyon
Paris
Madrid
Manchester
Sales Company/Office
Apolda
Nuremberg
Production Plant
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Product examples
Corporate Division Diehl Metering
Water metersHYDRUS ultrasonic meter
Systems and softwareIZAR RDC (data concentrator)
Gas meters AERIUS microthermal gas meter
Electricity meters Echelon electricity meter
Heat metersSHARKY ultrasonic energy meter
Smart Metering solutions Services and communications
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Diehl Smart Metering System
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Diehl Gas Metering
• Static Gas Meter
- Pressure independence
- Temperature conversion
• Integrated Communication
- Radio
- M-Bus
Product Portfolio Gas
Center of Competence for
Gas Measurement
Diehl Gas Metering GmbHIndustriestraße 1391522 Ansbach
Tel.: +49 981 1806-300Fax: +49 981 1806-325
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Modern Gas Test Lab
• Unique real gas and endurance test benches• all kind of gases• -25 C° to +55 C°• wide range of flow rates
• Approved as national authorized test lab for gas meters
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AERIUS
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For pressure independent and temperature converting standard volume measurements
Domestic gas meter based on the microthermal measurement principle
Cross Section AERIUS
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Gas outlet
Particle rest area
Gas inlet
Cyclone filter
Distributing chamber
Cover plate
Fire protection valve
BodyMeasuring UnitFeed
Measuring Unit
pressure dropper
main channel
measuring channel
sensor
By-pass Principle
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Microthermal measuring principle
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Animation Measuring Principle
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Result of measurement is
Standard Volume
Microthermal Mass Flow Measuring Principle
Q
Sensor
Heater Temperature max. 20 K
Temperature Sensor 1
Temperature Sensor 2
ΔT max. 2 K
Heating power: 2 mW
Duration of measurement: 50 msec
Measurement interval: 2 s
• Gas molecules act as «heat-carriers»
• The heat transport of the gas stream is measured, which is corresponding to the mass flow
• No volume measurement
• Mass flow is a measure for the number of molecules (per time interval)
• Molecules are carriers of the thermal energy of the gas
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Thermal energy = c . # molecules . calorific value
Electronics
(A/D-Converter)
Sensor
Heating Element
Thermopile 2
Microthermal Mass Flow Sensor
Thermopile 1
Absolute Temperature Sensor
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AERIUS Measurement Results
-4
-3
-2
-1
0
1
2
3
4
0,01 0,1 1 10Feh
ler
/ %
ISO H3 -25°C
N2 -25°C
CH4 -25°C
ISO H2 -25°C
-25°C
-20°C
-10°C
0°C
30°C
40°C
50°C
55°C
10°C
20°C
-25°C
-20°C
-10°C
0°C
30°C
40°C
50°C
55°C
10°C
20°C
40 l/h 600 l/h 6000 l/h
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Built-in Communication Interfaces
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• Wired M-Bus (EN 13757)
• Wireless M-Bus (EN 13757)• Integrated radio interface
• 868 MHz• 434 MHz
• OMS® protocol• AES-key (individually possible)
BillkWh
Diaphragm gas meterAssumptions:
Temperature 15°C Air pressure 1016mbar
Pressure in supply pipe 22mbar
Calorific valuekWh/m3
relative to273.15 K and 1013.25 mbar
Multiplication with the count and the condition number
T-correction273.15 / 288.15 = 0.9479
p-correction1016 – (0.12 * m.ü.M.) + 22
1013.25
condition number= 0.9479 * p-correction
AERIUSDisplay in relation to:
Temperature 0 °C Air pressure 1013.25mbar
condition number= 1
Domestic Gas Billing
(example Germany DVGW G685)
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AERIUS: Added Value
• Transparent gas billing for end customers through standard volume indication– Energy consumption: Standard volume output multiplied by calorific value
• Independent of– Atmospheric Pressure– Temperature
• Gas types
– Natural gases of type H and biogas (methane CH4)
– Air• Fraud Detection
– Air detection• Power Budget
– Battery life time up to 20 years• Repetitious, long-term stable and high accuracy of measurements
– No moving parts– Wear-free– Small gas flows – Overload resistant
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