FIDAMAT 6

The FIDAMAT 6 gas analyzer is suitable for determination of the total hydrocarbon content in air and high-boiling gas mixtures.

The FIDAMAT 6 gas analyzer is distinguished by its wide range of applications:

• In the presence of up to 100% H₂O vapor
• In ultra-pure gas applications
• 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 interference gases
• Low consumption of combustion air
• Low influence of oxygen on measured value

Moreover, the device provides warning and error messages:

• Failure of combustion gas
• Flame is extinguished
• Malfunction of pump and filter

• Environmental protection
• Wastewater (in combination with a stripping device, detection of hydrocarbon content of liquids)
• TLV (Threshold Limit Value) monitoring at places of work
• Quality monitoring
• Process exhaust monitoring
• Ultra-pure gas measurement in media such as O₂, CO₂, inert gases and cold sample gases
• Measurement of corrosive and condensing gases
• Process optimization

Further applications

• Chemical plants
• Gas manufacturers (ultra-pure gas monitoring)
• Research and development
• Cement industry (measurement of emissions)
• Paint shops and dry-cleaning systems
• Refineries (tank farms, wastewater)
• Drying systems
• Solvent recovery systems
• Pharmaceutical industry

Specific applications

Special applications

Special applications are available on request in addition to the standard combinations, e.g. measuring range 0 to 100%.

Performance-tested version

Configuration prepared based on QAL1 according to EN 15267 for systems - sections 13 and 27 of the German Federal Immission Protection Regulations and TA Luft.

• 19" rack unit with 4 U for installation
  • In hinged frame
  • In cabinets with or without telescopic rails
• Front plate can be swung down for servicing purposes (laptop connection)
• Gas connections for sample gas inlet and outlet as well as combustion gas and combustion air; pipe diameter 6 mm or ¼"
• Gas and electrical connections at the rear of the device
• Internal gas paths: stainless steel (mat. no. 1.4571)

Display and operator panel

• Large LCD field for simultaneous display of
  • Measured value
  • Status bar
  • Measuring ranges
• Contrast of LCD panel adjustable using menu
• Permanent LED backlighting
• Washable membrane keyboard with five softkeys
• Menu-driven operation for parameterization, test functions, adjustment
• User help in plain text
• Graphic display of concentration trend; programmable time intervals

Inputs and outputs

• One analog output for each measured component
• Two programmable analog inputs
• Six digital inputs freely configurable (e.g. for measuring range switchover, processing of external signals from sample preparation)
• Six relay outputs freely configurable (failure, maintenance demanded, maintenance switch, limit alarm, external solenoid valves, measuring point switchover)
• Expansion with eight additional digital inputs and eight additional relay outputs for autocalibration with up to four calibration gases

Communication

RS 485 present in basic unit (connection from the rear).

Options

• RS 485/RS 232 converter
• RS 485/Ethernet converter
• RS 485/USB converter
• Incorporation in networks via PROFIBUS DP/PA interface
• SIPROM GA software as service and maintenance tool

FIDAMAT 6, membrane keyboard and graphic display

Gas path

FIDAMAT 6 total hydrocarbon gas analyzer, gas path with pump and with connection for combustion air

FIDAMAT 6 total hydrocarbon gas analyzer, gas path without pump and with connection for combustion air

The FIDAMAT 6 carries out substance-specific measurements and not component-specific measurements. It measures the total of all hydrocarbons in a sample gas, but with different weighting of the hydrocarbon molecules. To a first approximation, the display is proportional to the number of C atoms in the respective molecule. However, there are fluctuations in practice. The display deviation for the respective molecule is expressed by the response factor.

The sample gas is supplied to the FIDAMAT 6 through overpressure or drawn in by the built-in diaphragm pump (optionally via a heated line and an additional filter) and passed on to the flame ionization detector via an obstruction-proof fused-silica restrictor.

In the detector, the hydrocarbons in the sample gas are burned in an oxyhydrogen gas flame. Burning partially ionizes the proportion of organically bound hydrocarbons. The released ions are converted into an ionic current by the voltage present between two electrodes, and measured using a highly sensitive amplifier. The measured current is proportional to the quantity of organically-bound C atoms in the sample gas.

A pressure regulator keeps the combustion gas pressure constant. The balanced system of pump, capillary tubes, and pressure regulator for combustion air ensures that the sample gas pressure is kept constant.

When the analyzer is switched on, ignition is automatic when the setpoint temperature is reached; for "with pump" versions, the pump is also started up.

FIDAMAT 6, mode of operation

The FIDAMAT 6 provides various messages in the form of floating contacts:

• Maintenance demanded
  E.g. sample gas flow (filter/pump)
  Fan failure (advance warning for measuring accuracy)
  The measured value remains unaffected.
• Fault
   Hydrogen, combustion air and sample gas pressure, temperature, physical part and pump, error in the electronics (temperature). The measured value can be influenced.
• Failure
  In the event of failure of, for example, the electronics, power supply, combustion gas, combustion air or sample gas, the device automatically shuts down (the combustion gas valve is closed).

Note

The sample gases must be fed into the analyzers free of dust. Condensation should be avoided. Therefore, the use of gas modified for the measuring task is necessary in most application cases.

Calibration

The calibrating interval should be adapted to the respective measuring task. We recommend N₂ as zero gas (at least 5.0; for measuring of hydrocarbons < 1 vpm: at least 6.0).

The calibration gas should have a concentration of at least 60% of the leading measuring range. The concentration of residual hydrocarbons must not exceed 0.1 vpm.

For pure gas measurement, use suitable accompanying gases.

Main features

• Four measuring ranges which can be freely configured, even with suppressed zero point; all measuring ranges are linear
• Electrically isolated measured value output 0/2/4 through to 20 mA (including inverted)
• Choice of automatic or manual measuring range switchover; remote switching is also possible
• Storage of measured values possible during calibration
• Measuring range identification
• Measuring point switchover for up to 6 measuring points
• Measuring point identification
• Wide range of selectable time constants (static/dynamic noise damping); i.e. the response time of the device can be adapted to the respective measuring task
• Easy handling thanks to menu-driven operation
• Low long-term drift
• Two control levels with separate authorization codes for the prevention of accidental and unauthorized operator interventions
• Automatic measuring range calibration parameterizable
• Operation based on NAMUR recommendation
• Custom-made device designs, such as:
  • Customer acceptance
  • TAG plates
  • Drift recording
• Wear-free, corrosion-resistant filter housing
• No blocking of the sample gas capillaries through the use of a quartz capillary
• Purge function in the event of device or power supply failure (avoids build-up of toxic and corrosive substances in the device)
• Low consumption of combustion air
• Response factors comply with the minimum requirements in accordance with TA Luft
• Simple handling using a numerical membrane keyboard and operator prompting

Response factors (examples, mean values)

Cross-interferences (examples)¹⁾

¹⁾ With measuring range 0 to 15 mg/m³.