Тех. данные
Особенности
The FIDAMAT 6 gas analyzer is distinguished by its wide range of applications:
- In the presence of up to 100 % H2O vapor
- With high-boiling components (up to 200 °C)
- In the presence of corrosive gases (with preliminary filter).
The FIDAMAT 6 exhibits:
- Extremely low cross-sensitivity to interfering gases
- Low consumption of combustion air
- Low influence of oxygen on measured value
The analyzer is additionally equipped with warning and fault messages:
- For failure of combustion gas
- If the flame is extinguished
- To indicate pump and filter faults
The Set FIDAMAT 6 EX additionally provides:
- Use in hazardous areas of zone 2 in accordance with directive 94/EU
- LEL measurement of explosive gas mixtures
Дизайн
The Set consists of the following components which can be selected as options:
- FIDAMAT 6 in protective housing in accordance with ATEX (basic version)
- FIDAMAT 6 in protective housing, mounted on mounting plate, and with combustion air preparation device
- FIDAMAT 6 in protective housing, mounted on mounting plate, with combustion air preparation device, installed in a standard control cabinet
- Combustion gas supply on mounting plate
The basic version includes the FIDAMAT 6 in a pressurized sheet-steel protective housing for use in hazardous areas of Zone 2. The monitoring unit for monitoring the volume flow of the purging air and observation of the pressure limits in the protective housing is included in the delivery.
FIDAMAT 6 in protective housing
In a further version, the basic system can be ordered completely assembled on a mounting plate with dimensions 1 000 x 2 000 mm (W x H). This version additionally provides the complete combustion air preparation device, and is supplied with complete wiring and piping for installation in an analysis cabinet or standard protective cabinet.
FIDAMAT 6 in protective housing on mounting plate with combustion air preparation device
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Legend
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1
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FIDAMAT 6
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6
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Gönnheimer EEx p monitoring
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2
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Combustion air preparation device
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7
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Terminal box
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3
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Pressure reducer for purging air
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8
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Reset switch
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4
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Pressure reducer for combustion air
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9
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Non-return valve
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5
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Pressure switch for combustion gas
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10
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Ball valves
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The system can be optionally ordered completely ready for connection in a standard protective cabinet made of sheet-steel or FRP.
With all versions, the gas connections on the process side can be ordered with metric or Imperial dimensions.
Combustion gas supply
The combustion gas supply can be ordered optional to the various versions.
The components are fitted on a mounting plate, and include:
- Pressure reducers required for combustion and calibration gases
- Flow limiter for combustion gas
- Solenoid valve for switching off the combustion gas in the event of a fault
- Automatic switchover of combustion gas supply to replacement cylinder
The pressure of the combustion gas cylinder is monitored by a pressure switch. If the set limit is fallen below, automatic switchover to the replacement cylinder is carried out. An alarm is triggered at the same time to signal that it is necessary to replace the cylinder. The continuous supply with combustion gas means that interruption-free operation of the equipment is guaranteed.
Combustion and calibration gases do not belong to the scope of delivery. These must be ordered separately as required.
Функции
The sample gas is supplied to the FIDAMAT 6 at pressure, and passes via an anti-clogging fused silicone restrictor to the flame ionization detector.
Hydrogen (H2) is used as the combustion gas. In the basic version, the FIDAMAT 6 is installed in an IP54 housing suitable for EEx(p) which is permanently purged with instrument air.
Purging prevents the formation of an explosive atmosphere in the housing should large leaks occur or if the combustion gas line breaks. To this end, any combustion gas released must be diluted down to a concentration < 25 % of the LEL. This requirement in accordance with DIN EN 60079-2 is achieved by permanent purging with instrument air at a flow rate of approx. 1 200 l/h.
The purging results in an overpressure in the protective housing. Therefore, any gas vapors which might occur occasionally cannot penetrate into the housing. The overpressure in the protective housing has a setpoint of 10 mbar. The monitored limits are between 0.8 and 15 mbar.
The purging flow rate for the protective housing and the set pressure limits are monitored.
In the event of a fault:
- The power supply to the FIDAMAT 6 is switched off
- The inputs/outputs of the FIDAMAT 6 are switched off by a Modex relay
- The supply of combustion air is switched off by a solenoid valve outside the housing
The pressure of the combustion air supply for the FIDAMAT 6 is monitored by a pressure switch whose switching point is set to approx. 200 mbar below the supply pressure. If the pressure drops as a result of a leak or a break in the combustion gas line, the combustion air supply is switched off by a solenoid valve outside the housing.
Only non-flammable gases (gases below the LEL) may be supplied to the FIDAMAT 6 gas analyzer.
The exhaust air and exhaust gas of the FIDAMAT 6 must be routed into the non-hazardous area.
Following installation and maintenance work affecting the gas paths, a leak test must be carried out as described in the manual.
Технические данные
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Climatic conditions
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Ambient temperature
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5 … 35 °C
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5 … 45 °C
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Relative humidity
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< 90%, non-condensing
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Corrosive atmosphere
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No
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Auxiliary media
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Compressed air
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Approx. 6 000 hPa, purified instrument air, free of oil, water and dust
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Volume flow
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1 200 l/h
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Power supply
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Supply voltage
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100 … 120 V AC
200 … 240 V AC
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Frequency
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48 … 63 Hz
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Type of connections
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Pipe material
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Stainless steel
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Connections
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Metric (6 mm)
Imperial (1/4")
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Cabling
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Electrical design
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According to IEC
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Type of cables
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Non-armored cables
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Cable ID
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No labeling of individual cores
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Installation
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Site
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Indoors
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Ex-zone analyzer
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ATEX II 3G
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System design
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Version
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Basic unit in protective housing in accordance with ATEX
620 x 600 x 180 mm (W x H x D)
Basic unit in protective housing on mounting plate, with processing of combustion air
1 000 x 1 530 mm (W x H)
Basic unit on mounting plate in cabinet
1 350 x 2 000 x 700 mm (W x H x D)
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Degree of protection
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IP54
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Automatic calibration
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Optional
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Signal outputs
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4 … 20 mA / floating contact
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With sample gas return flow
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No
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Add-on electronics (option)
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AUTOCAL extension
- 8 additional binary inputs and 8 additional binary outputs
- 8 additional binary inputs and 8 additional binary outputs and PROFIBUS PA
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Measuring response
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See technical data of FIDAMAT 6
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Influencing variables
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See technical data of FIDAMAT 6
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Analyzer ID
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Ex II 3G EEx n T3
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FIDAMAT 6 without pump, with heated oven, with combustion air connection
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Gases
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Inlet pressure
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Sample/calibration gas operating pressure
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Flow through FID
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Flow through bypass
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Without
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With
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hPa (abs.)
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hPa (abs.)
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hPa
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Combustion gas
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3 000 ... 5 000
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2 000 ± 20
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~ 25
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—
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Combustion air
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3 000 ... 5 000
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1 485 ± 5
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—
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~ 320
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~ 300
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Sample gas
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~ 2 000
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—
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1 500 ± 2
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~ 3
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~ 500
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Zero gas
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~ 2 000
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—
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1 500 ± 2
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~ 3
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~ 500
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Calibration gas
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~ 2 000
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—
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1 500 ± 2
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~ 3
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~ 500
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Gas inlet conditions
Чертеж
FIDAMAT 6 in standard protective cabinet, dimensions in mm
