flow metering in gases – introduction to combimass® family
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BINDER GROUP
1
Flow metering in gases – Introduction to COMBIMASS® family
- physical principle, basic information- different types of instruments, pricing & delivery time
Sales Training Germany October 17th to 19th, 2012
BINDER GROUP
Basics of Thermal Dispersion Technology
Technical Basics
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flow no flow
heated sensor
reference sensor
The principle:
Gas flows by a heated sensing
element and causes cooling
down of the element by the
mass flow (molecules)
Temperature:
Measurement is based on a
Pt 100, an additional non-hea-
ted sensor is used as a reference.
Amount of heat:
The amount is direct related to
the mass flow.
BINDER GROUP
Main Advantages of Thermal Dispersion Technology
Technical Basics
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COMBIMASS flowmeter measure directly the standard volumetric flow or the mass flow of the gas respectively. No pressure and temperature compensation are necessary.
COMBIMASS® sensors for thermal gas flow measurement are designed for • minimal pressure loss• are rugged, corrosion-resistant• and require minimal maintenance• have no mechanical moving parts
COMBIMASS® sensors are characterized by• high-precision resistors• minimal drift of the raw signal• excellent long-term stability all this even under harsh operating conditions and at high temperatures.
BINDER GROUP
Main Advantages of Thermal Dispersion Technology
Technical Basics
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The COMBIMASS® flowmeter measure the flow rate • of compressed air, supply and process gases• of pure gases and gas mixtures• of clean and sterile gases• of dirty, moist or corrosive gases• of flammable and toxic gases in all kind of industries for the most diverse applications.
The high-performance gas flow meters measure • directly the normal volumetric or the gas mass flow • unaffected by pressure and temperature fluctuations• with a turndown ratio up to 1000 : 1, an accuracy up to 1%• at process temperatures up to 270 °C, operating pressures up to 63 barand guarantee always precise and reliable results even for difficult measuring tasks.
BINDER GROUP
Requirements to use Thermal Mass Flowmeter
Technical Basics
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The COMBIMASS® flowmeter detects at one point the flow
• fully turbulent flow• regular flow profile• no flow pulsations• no piping pulsations• static gas composition
Otherwise detected flow can have an error of more than 30%.Different types of Flow Conditioner and Condensate Traps can improve the installation situation and so the final accuracy.
BINDER GROUP
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COMBIMASS® Gas Flow meters for each application
There are three different general types: COMBIMASS® basicCOMBIMASS® ecoCOMBIMASS® compact
Special types for biogas applications:COMBIMASS® eco-bio+ SSCOMBIMASS® eco-bio+ ALCOMBIMASS® oem-bio L
Further special types:FLAREMASS
Types of Flowmeter
BINDER GROUP
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Combimass Basic Combimass Eco Combimass CompactGas temperature max. 130 °C max. 220 °C - 30 to max. 270 °C
Ambient temperature
- 40 to 80 °C - 40 to 80 °C - 40 to 80 °C
Operating pressure
max. 40 barg max. 63 barg max. 63 barg
Span 10:1 min / 100:1 max 10:1 min / 100:1 max 10:1 min / 100:1 / 1000:1
Gas velocity range for
calibration
0,46 – 46 Nm/s Standardmin. 0,08 / max. 150 Nm/s
Special calibration
0,46 – 46 Nm/s Standardmin. 0,08 / max. 240 Nm/s Special
calibration
0,46 – 46 Nm/s Standardmin 0,08 /max. 400 Nm/s
Special calibration
Material available only 1.4571 only 1.4571 and 1.44351,4571, 1.4435 and others
Hastelloy, Tantalum and others
ATEX not possible Ex(e)d and Ex(i)a Ex(i)a
Housing Aluminum Stainless Steel 1.4571Stainless Steel 1.4571
with rotating cable gland
Process connection
only compression fitting12 mm or 18 mm 2 PIN sensor
compression fitting, 12 mm or 18 mm
flange connectionshot tapping
compression fitting12, 18 and 25 mm
flange connections, hot tapping
Media compressed air, technical gases compressed air, digester gas, biogas,
natural gas, combustion airprocess gases, chemical applications, flare gas
BINDER GROUP
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COMBIMASS® Gas Flowmeter for each application
There are different electronic modules:
• COMBIMASS® master• COMBIMASS® multi• COMBIMASS® I.S. interface
There are different types of field housings:
•Field housing for remote application with a graphic display 24 VDC or 230 VAC•Electronic cabinet 24 VDC or 230 VAC, for EEx ia instruments, master or multi
Types of Flowmeter
BINDER GROUP
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There are different types of sensors (depending on nominal pipe size and gas speed):
12 mm sensor18 mm sensor25 mm sensor
Each sensor can be delivered as a single point or a multi-point sensor (for large nominal diameters, rectangular ducts or insufficient straight inlet and outlet pipe sections/ flow profile distortions).
The No. of pins is in general 2. 1-Pin and 1 ½-Pin will not be supplied any more.
COMBIMASS® Gas Flowmeter for each application
Types of Flowmeter
BINDER GROUP
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There are different kinds of process connections available:
• Compression fitting BSP / NPT-thread (standard)• Fix BSP / NPT-thread• Flange Connections acc. DIN and ANSI• Inline measuring sections• Hot tapping units (standard / medium and high pressure)
COMBIMASS® Gas Flowmeter for each application
Types of Flowmeter
BINDER GROUP
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There are different types of electronics available:
• compact version (sensor and electronic one unit)• remote version (sensor and separate electronic)• Master module• Multi module
For pricing of calibration following points must be considered:•media•operating pressure min/max•operating temperature min/max•operating velocity
COMBIMASS® Gas Flowmeter for each application
Types of Flowmeter
BINDER GROUP
Variable operating conditions and mixed gases are a challenge for the COMBI-MASS® Flare Gas Measurement System. Compensation is done by a heat transfer sensor.
• H2-inline-compensation, mixed gas lab calibration possible at CAMASS®Calibration Centre and on site• inline validation system, flow conditioning, multi-point measuring systems• direct mass measurement, independent on pressure and temperature, • easy installation, measuring range 1000 : 1 at minimal pressure loss• corrosion-resistant sensors, insensitive to dirt
C O M B I M A S S
4 3 . 8
S
C O M B I M A S S
4 3 . 8
S
FLAREMASS® Flare Gasflow Measurement System
Types of Flowmeter
BINDER GROUP
Steam
The flare burns clearly with any gas composition.At any time the thermal mass meter shows the correct mass flow because the flow effect caused by changing gas composition is compensated by a heat transfer sensor.
FLAREMASS® Flare Gasflow Measurement System
Types of Flowmeter
BINDER GROUP
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• Standard meters (sensor lengths 200/ 300/ 450 mm), 130 °C gas temperature max., design with compression fitting: 4 – 6 weeks, special delivery times on request
• Other lengths, higher pressure and temperature / Flanged meters: approx. 8 weeks
• Special materials (Hastelloy C, Tantalum, others): min. 10 – 14 weeks
• Multi-point: on request, depends on specification
COMBIMASS® Delivery times
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