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Обзор
Обзор
The MicroSAM is a miniaturized process gas chromatograph (GC) in an Ex-d enclosure. Through consistent use of microsystem technology (silicon wafer technology), all analytical components are concentrated in the smallest possible area. The design particularly enables a distributed installation close to the process.
Область применения
Chemical industry
- Analysis of ethylene in 1,2-dichloroethane (EDC) for process control
- Fast determination of nitrogen in acetylene for process control
- Hydrocarbon analysis of starting product (LPG) of a cracker
- Safety measurement of ethylene oxide during unloading of tankers
- Multicomponent analysis in ethylene oxide
- Analysis of methanol, water and dimethylether in a pilot plant
- Monitoring of coolant: Trace monitoring in chloromethane
- Analysis of nitrogen and hydrogen in pure gas of a chloralkali plant
Oil & gas
- Hydrogen analysis in recycled gas and other process gases
- Analysis of inert gases and low-boiling paraffins/olefins in combustion gas
- Analysis of hydrogen and low-boiling hydrocarbons in reformer/platformer plant
- Trace analysis of impurities in acetylene from a cracker
- Analysis of ethane in ethylene from a cracker
- Measurement of calorific value in exhaust gas for quality control in a power plant
- Analysis of ethylene in methane in an ethylene plant
- Analysis of propadiene and propine in the C2 splitter of a steam cracker
- Analysis of low-boiling hydrocarbons in an ethylene plant/visbreaker
- Analysis of exhaust gas in flares
- Analysis of gas loop in a propylene oxide plant
- Analysis of CO in crack gas in an LDPE plant
- Analysis of refinery gas in a pilot plant
- Analysis of calorific value in natural gas preparation plants
Iron & steel
- Analysis of exhaust gas in blast furnaces.
Pharmaceutical industry
- Analysis of O2, N2, CO2 and water in fermenting processes
- Analysis of alcohols in nitrogen for vacuum drying plants
Metals, aggregates, cement
- Analysis of mine gas for inert gases and hydrocarbons
Заказные данные
| Заказной № |
Вес, кг |
Описание |
Наличие на складе |
Заказать |
| 7KQ3101-... |
25 |
Process gas chromatograph microsam --- standard configuration --- hardware configuration micro filament tcd -8 sensors electronic pressure controllers - single channel, max. 4 oven - airless, isothermal chamber sample valve - multi funct. diaphragm valve valveless column switching capillary columns application programming 1 sample streams calibration |
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Аксессуары
| Заказной № |
Вес, кг |
Описание |
Наличие на складе |
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Тех. данные
Особенности
- The distributed field installation reduces investment costs, and opens up new fields of application, e.g.:
- Installation in plant areas where mounting within an analyzer shed is not possible
- Installation at remote locations without extended infrastructure
- Reduction in laboratory analyses through online measurements
- Low space requirements in analysis cabinets reduce investment costs
- Low maintenance effort and gas/energy consumption reduce operating costs
- High-resolution capillary columns permit fast analyses
- Live injection permits representative sample injections
- Maintenance-free, valveless separating column switching with electronic pressure controllers
- The use of several micro thermal conductivity detectors (multidetection) provides exact measuring results and also validation possibilities
- Versatile networking possibilities for central maintenance and secure data transfer
- Remote monitoring with Windows-based software and Ethernet communication
- Simplified servicing through replacement of modules
Дизайн
Enclosure
- EEx-d version standard (according to ATEX II 2G)
- Heating adjustable from 60 °C to 165 °C (isothermal)
- Decentralized installation close to sampling point.
Analytical module
The compact analytical module contains all the functional components of a chromatograph. The MicroSAM works with:
- Live injection
- Valveless live switching on microchip basis
- Standardized analytical modules
- Multidetection through use of up to 8 micro-thermal conductivity detectors in smallest possible area (e.g. on all column/purging outputs and injection).
Функции
Live injection
The MicroSAM has a two-stage injection system. Using a micro injection valve, a defined quantity of sample is first brought up to the carrier gas pressure. This eliminates the pressure-dependent error in the injection quantity present with conventional systems. In the second stage, the sample is transferred to the column by a valveless micro injection system (live injection). The result is an "active" injection.
The injection volume can be varied time-controlled, and exactly matched to the column requirements.
Valveless live column switching
Because of the high dead volume of conventional valves, only the valveless version can be considered for a miniaturized system. In this case, the generation of differences in flow using several electronic pressure regulators at appropriate positions of the column setup causes a change in the flow directions. (The system operates according to the Wheatstone principle, but pneumatically.) The functions "Cut" and "Backflushing" can then be implemented free of dead volume.
The column system
The column system consists of two or three capillary columns connected in sequence. Micro TCDs or micro live circuits are installed in sequence ("inline") upstream and downstream of the individual columns. Three electronic pressure regulators supply the columns with carrier gas and carry out the switching functions (injection, backflushing and cut).
By using narrow-bore capillary columns, the separation at high resolution is carried out within a much shorter time, approx. factor 2 to 3 compared to standard capillary columns.
Electronic pressure regulators
A high pressure stability together with rapid changing rates in the hPa range are required for precise and fast switching. This is achieved in the electronic pressure regulators by means of a piezo actuator.
Detector
The principle of the micro TCDs (silicon wafer technology) is based on the continuous measurement of the different thermal conductivities of the carrier gas and the components to be measured.
The measurement can be carried out without falsification by avoiding catalytic effects on the heating wires and maintaining a constant flow velocity. This permits consistent in-line detection, i.e. without qualitative or quantitative losses of substances.
Application modules
The standardized application modules all contain live injection and live switching. Modules A01 to A03 have four detectors and three columns, while A04 to A08, A10 and A11 have three detectors and two columns, and A09 has three detectors and three columns.
The application modules are suitable for separation of the components described below.
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Detector
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Column 1
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Detector
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Column 2
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Detector
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Circuit
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Column 3
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Detector
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A01
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Injection
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TCD
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Sil5 C3, C4, C5, C6+
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TCD
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PoraPLOT/Porabond Q
CO2, C2, H2S, H2O
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TCD
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Live
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Molecular filter
H2, (Ar+O2), N2, C1, CO
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TCD
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A02
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Injection
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TCD
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Sil5 C5+
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TCD
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SilicaPLOT
C2, C3, C4 (saturated, unsaturated), C5+
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TCD
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Live
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Molecular filter
H2, (Ar+O2), N2, C1, C
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TCD
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A03
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Injection
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TCD
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Sil5 C5+
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TCD
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Wax
Volatile pole components such as alcohol, ether, ketones, aldehydes, C7+
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TCD
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Live
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ALOX
C1, C2, C3, C4
(saturated, unsaturated)
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TCD
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A09
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Injection
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-
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Sil5
Non-polar aromatic and aliphatic hydrocarbons
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TCD
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Sil5
Non-polar aromatic and aliphatic hydrocarbons
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TCD
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Live
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Porabond Q
All components except molecular filter components
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TCD
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Application modules A01 to A03 and A09
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Detector
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Column 1
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Detector
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Circuit
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Column 2
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Detector
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A04
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Injection
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TCD
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Wax
Volatile pole components such as alcohol, ether, ketones, aldehydes, C7+
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TCD
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Live
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SilicaPLOT
C2, C3, C4, C5, C6 (saturated, unsaturated)
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TCD
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A05
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Injection
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TCD
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Wax
Polar aromatic and aliphatic hydrocarbons
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TCD
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Live
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Wax
Polar aromatic and aliphatic hydrocarbons
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TCD
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A06
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Injection
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TCD
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Sil5
Non-polar aromatic and aliphatic hydrocarbons
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TCD
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Live
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Sil5
Non-polar aromatic and aliphatic hydrocarbons
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TCD
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A07
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Injection
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TCD
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Wax
Polar aromatic and aliphatic hydrocarbons
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TCD
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Live
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Sil5
Non-polar aromatic and aliphatic hydrocarbons
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TCD
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A08
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Injection
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TCD
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Porabond Q
All components except molecular filter components
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TCD
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Live
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Molecular filter
H2, (Ar+O2), N2, C1, CO
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TCD
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A10
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Injection
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TCD
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Sil5
Non-polar aromatic and aliphatic hydrocarbons
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TCD
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Live
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Wax
Polar aromatic and aliphatic hydrocarbons
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TCD
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A11
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Injection
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TCD
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RTX-5+
RTX-200
Non-polar aromatic and aliphatic hydrocarbons and medium-pole components such as chlorosilane
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TCD
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Live
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SilicaPLOT
C2, C3, C4, C5, C6
(saturated, unsaturated)
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TCD
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Application modules A04 to A08, A10 and A11
Application
Various solution concepts are available:
- Adjustment without method development (on request)
- Run-out ex factory
The application modules are standardized. The functionality of the MicroSAM is proven with a specified carrier gas, exact setting of the oven temperature and the carrier gas inlet pressures, and with a standard calibration gas. The measured components and switching functions (live injection, backflushing, cut) are saved.
- Commissioning on site
All application modules are standardized, i.e. the analytical hardware is defined and cannot be changed. The specific settings are carried out on site during commissioning.
- Adjustment with method development
Non-standardized applications require specific method development:
An optimum solution is elaborated on the basis of an existing specification and a selected calibration gas or with application of a customer sample.
Технические данные
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MicroSAM
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Design, enclosure
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Weight
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15 kg
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Degree of protection
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IP65 (NEMA 4X)
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Mounting
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Installation on
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Post, pipe or wall
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Distance from wall or next chromatograph
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300 mm (12")
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Distance from ceiling or floor
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200 mm (8")
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Explosion protection
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ATEX II 2 G Ex d IIC T4
Certificate DMT 03 ATEX 069 X
FM Class I, Div 1, Groups A, B, C, D T4, Certificate 3017424, CSA Class I, Div 1; Groups B, C, D
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Support bracket
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- Mounting part, dimensions (D x H)
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380 x 110 mm
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8
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- Bracket for gas connection, dimensions (D x H), bracket on right side, mounted at right angle
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146 x 110 mm
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Electrical characteristics
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Auxiliary power
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24 V DC +10/-15 %
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Power consumption
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18 VA
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60 VA
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IEC 61010 / DIN VDE 0411
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EMC immunity
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According to IEC 60801/DIN VDE 0843
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- Conducted interferences on AC supply lines
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- According to Part 4 (burst)
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2 kV
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- According to Part 5 (ms pulses), line against line
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1 kV
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- According to Part 5 (ms pulses), line against ground
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2 kV
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- Conducted interferences on signal lines
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- According to Part 4 (burst)
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1 kV
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- Immunity to static discharge
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- According to Part 2 (ESD)
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8 kV
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- According to Part 3 and Part 6
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10 V/m
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According to CISPR 11 / EN 55011 / DIN VDE 0875 Limit class B
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12.5 A
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Gas inlet conditions
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Permissible sample pressure
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10 … 50 kPa
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Sample flow
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20 … 100 ml/min
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Max. sample temperature
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120 °C
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Solid components
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< 0.1 mm
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Climatic conditions
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Permissible ambient temperature
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-20 ... 55 °C
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Permissible storage/transport temperature
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-30 °C ... 70 °C
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Permissible relative humidity
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Max. 90 %
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Sample and injection
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Sample streams
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3
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Calibration sample streams
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1
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Phase
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Gaseous
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Required filtration
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Degree of separation 99.99 % for < 2 μm particles
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Material with which the sample comes into contact
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Stainless steel, fused silica, polyimide
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Injection
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"Valveless" live injection
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With multifunctional diaphragm valve
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- Injection volume adjustable using switching times
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2 ... 50 µl
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- Max. operating temperature
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165 °C
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Oven
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Number/type
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1/isothermal
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Purging with N2
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Possible
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Dimensions (DxH)
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160 x 10 mm
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Max. heating power
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35 VA
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Temperature range
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60 … 165 °C
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Temperature stability
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± 0.1 K (60 ... 165 °C)
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Temperature accuracy
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± 3 K (60 ... 165 °C)
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Retention time variations per 10 °C change in ambient temperature
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Approx. 0.3 %
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Heating-up period from 30 ... 100 °C
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10 minutes
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Columns and gases
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Column type
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Capillary columns 0.15 ... 0.25 mm/internal
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Separating column switching
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Multidimensional chromatography with backflushing and cut in live system
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Multifunctional diaphragm valve
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For injection and backflushing
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Gas connections
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Pipe 1.5 x 0.25 (approx. 1/16")
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Pressure regulators
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Max. 4 single-channel electronic pressure regulators
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Solenoid valves for control of diaphragm valve
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2 NC contacts, 2 NO contacts
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Carrier gas
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H2, N2, He, Ar
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- Gas purity (minimum requirement)
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> 99.999 %
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< 2 μm
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Degree of separation 99.99 % for 0.1 mm particles
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10 … 60 ml/min
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500 … 700 kPa
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Instrument air
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Not required
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Detectors, calibration and performance data
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Detector type
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TCD, max. 8 sensors
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Ambient temperature
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Negligible
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Vibrations
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Negligible
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Cell volume
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0.02 ml
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Calibration
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Manual or automatic, single-level or multi-level
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Smallest measuring range
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300 ppm
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Linear range
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> 104
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Cycle time
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Typically 30 … 120 s
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Electrical inputs and outputs
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Basic equipment
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- Digital outputs (relay contact 0.4 A / 24 V DC)
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2, freely usable (expandable by NAU, see communication)
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- Digital inputs (24 V to optocoupler)
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2, freely usable (expandable by NAU, see communication)
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Interfaces
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1 x Ethernet 10BaseT / TCP/IP
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1 x RS 485 or RS 232 / MODBUS RTU, OPC (ODPC) over Ethernet
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Electronics
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Communication and analytical controller (CAC)
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Intel 586 architecture
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128 MB
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64 MB
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Windows CE 3.0
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Preinstalled. Modifications or upgrades for operation PC downloadable via network or locally
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Realtime signal processor (RSP)
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Motorola 68 376.20 MHz
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1 MB
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1 MB
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Forth
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Preinstalled. Modifications or upgrades downloadable via internal service interface
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Controller
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3
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- Calibration sample streams
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1
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Supply voltage, software, heartbeat, ready, maintenance request, fault, sample flow
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Recommended operator panel
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Desktop or laptop
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At least Pentium III
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800 MHz
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1 x Ethernet
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Windows 98, NT, 2000 or XP
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Advance System Tools, version 4.0 or later
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Чертеж
MicroSam, dimensions in mm
Дальнейшая информация
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Order No.
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Manual
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C79000-D5300-C564
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Compact Manual
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C79000-G5300-C568
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C79000-G5376-C568
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C79000-G5377-C568
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C79000-G5378-C568
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C79000-G5372-C568
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