Flow metering in gases Introduction to COMBIMASS family - physical principle, basic information - different types of instruments, pricing & delivery time Sales Training Germany October 17 th to 19 th, 2012 1
COMBIMASS Modular Flow Meter Family 2
Basics of Thermal Dispersion Technology Technical Basics The principle: Gas flows by a heated sensing element and causes cooling down of the element by the mass flow (molecules) Temperature: flow heated sensor reference sensor no flow Measurement is based on a Pt 100, an additional non-heated sensor is used as a reference. Amount of heat: The amount is direct related to the mass flow. 3
Technical Basics Main Advantages of Thermal Dispersion Technology 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. 4
Technical Basics Main Advantages of Thermal Dispersion Technology 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 bar and guarantee always precise and reliable results even for difficult measuring tasks. 5
Requirements to use Thermal Mass Flowmeter The COMBIMASS flowmeter detects at one point the flow fully turbulent flow regular flow profile no flow pulsations no piping pulsations static gas composition Technical Basics 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. 6
Types of Flowmeter COMBIMASS Gas Flow meters for each application There are three different general types: COMBIMASS basic COMBIMASS eco COMBIMASS compact Special types for biogas applications: COMBIMASS eco-bio+ SS COMBIMASS eco-bio+ AL COMBIMASS oem-bio L Further special types: FLAREMASS 7
Combimass Basic Combimass Eco Combimass Compact Gas temperature max. 130 C max. 220 C - 30 to max. 270 C Ambient temperature Operating pressure - 40 to 80 C - 40 to 80 C - 40 to 80 C 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 Standard min. 0,08 / max. 150 Nm/s Special calibration 0,46 46 Nm/s Standard min. 0,08 / max. 240 Nm/s Special calibration Material available only 1.4571 only 1.4571 and 1.4435 0,46 46 Nm/s Standard min 0,08 /max. 400 Nm/s Special calibration 1,4571, 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 1.4571 Process connection Media only compression fitting 12 mm or 18 mm 2 PIN sensor compressed air, technical gases compression fitting, 12 mm or 18 mm flange connections hot tapping compressed air, digester gas, biogas, natural gas, combustion air Stainless Steel 1.4571 with rotating cable gland compression fitting 12, 18 and 25 mm flange connections, hot tapping process gases, chemical applications, flare gas 8
COMBIMASS Gas Flowmeter for each application There are different electronic modules: COMBIMASS master COMBIMASS multi COMBIMASS I.S. interface Types of Flowmeter 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 9
There are different types of sensors (depending on nominal pipe size and gas speed): 12 mm sensor 18 mm sensor 25 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. Types of Flowmeter COMBIMASS Gas Flowmeter for each application 10
COMBIMASS Flowmeter Multi-Point Types of Flowmeter 11
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) Types of Flowmeter COMBIMASS Gas Flowmeter for each application 12
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 Types of Flowmeter COMBIMASS Gas Flowmeter for each application 13
Types of Flowmeter FLAREMASS Flare Gasflow Measurement System 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. H 2 -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 4 3. 8 corrosion-resistant sensors, insensitive to dirt C O M B I M A S S S 4 3. 8 C O M B I M A S S S
FLAREMASS Flare Gasflow Measurement System 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. Steam Types of Flowmeter
COMBIMASS Delivery times 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 16
Thank you for your attention! Any Questions? 17