Siemens Oxymat - Model 64 -Continuous Gas Analyzers for Measurement of Oxygen Concentration

High linearity

The OXYMAT 64 operates with ZrO2 sensors. The sample gas flows through a tubular sensor which is heated to 650°C at a constant flow rate. The outside of the sensor is exposed to ambient air acting as a reference electrode. Due to the concentration differences on both sides, there is partial pressure that differs. Since ZrO2 is electrically conductive at 650 °C, an ion migration occurs towards of the lower partial pressure. This results in a potential difference between the two electrodes, which is a measure of the oxygen concentration in the sample gas.

Application-specific sensors

Depending on the application, a catalytically inactive ZrO2 sensor and a catalytically active ZrO2 sensor are available. The two sensors differ in the electrode material and react differently to flammable accompanying components.

Both variants are characterized in particular by their high linearity and also offer all the advantages of the Series 6, such as the intuitive operating concept and the open interface architecture.

• Max. number of components: 1
• Components: Oxygen
• Smallest measuring range: 0-10 vpm
• Housing: 19“ rack unit

• High linearity
• Compact design
• Open interface architecture (RS 485, RS 232, PROFIBUS)
• SIPROM GA network for maintenance and service information (option)

• Production of technical gases Measurements in N2 and CO2
• Welding Measurements in protective gases during welding of highly alloyed steels, titanium, etc.
• Systems for air separation Measurements in N2 and in inert gases (e.g. Ne, Ar) Measurements in CO2
• Food production Measurement in CO2 (e.g. breweries)
• Electronics industry Low-pressure version with pump
• Flow soldering systems

• 19" rack unit with 4 HU for installation
  • in hinged frame
  • in cabinets with or without telescope rails
• Front plate for service purposes can be pivoted down (laptop connection)
• Connections for sample gas
  • Input: Clamping ring connection for a pipe diameter of 6 mm or ¼"
  • Output: Pipe connection with diameter 6 mm or ¼"
• High-pressure and low-pressure versions
• Catalytically active and inactive cell

Display and control panel

• Large LCD field for simultaneous display of
  • Measured value
  • Status bar
  • Measurement ranges
• Contrast of the LCD field adjustable via the menu
• Permanent LED backlighting
• Washable membrane keyboard with five softkeys
• Five-digit measured-value display (decimal point counts as one digit)
• Menu-driven operation for parameterization, configuration, test functions, adjustment
• Operator support in plain text
• Graphical display of the concentration progression; time intervals parameterizable
• Bilingual operating software German/English, English/Spanish, French/English, Spanish/English, Italian/English
• Switchover from ppm measuring range to % measuring range

Input and outputs

• One analog output per medium (from 0, 2, 4 to 20 mA; NAMUR parameterizable)
• Six binary inputs freely configurable (e.g. for measurement range switchover, processing of external signals from sample preparation)
• Six relay outputs freely configurable (failure, maintenance request, maintenance switch, threshold alarm, external solenoid valves)
• Two analog inputs configurable (e.g. correction of crossinterference, external pressure sensor)
• Extension with eight additional binary inputs and eight additional relay outputs, e.g. 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
• Connection to networks via PROFIBUS DP/PA interface
• SIPROM GA software as the service and maintenance tool