Общее - ULTRAMAT 23
 TheULTRAMAT 23 gas analyzer can measure up to 4 gas components at once: A maximum of three infrared sensitive gases such as CO, CO2, NO, SO2, CH4 and in addition O2 with an electrochemical oxygen measuring cell. ULTRAMAT 23 basic versions for:
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Особенности
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Область примененияApplication areas
Further applications
Special applications
All larger measuring ranges are also approved. Furthermore, the TÜV-approved versions of the ULTRAMAT 23 comply with the requirements of EN 14956 and of QAL 1 according to EN 14181. Conformity of the analyzers with both standards is TÜV-certified. Determination of the analyzer drift according to EN 14181 (QAL 3) can be carried out manually or also with a PC using the SIPROM GA maintenance and servicing software. In addition, selected manufacturers of emission evaluation computers offer the possibility for downloading the drift data via the analyzer’s serial interface and to automatically record and process them in the evaluation computer.
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Дизайн
Display and control panel
Inputs and outputs
Communication
Options
 ULTRAMAT 23, membrane keypad and graphic display Executions of the wetted parts
 ULTRAMAT 23, design Gas path
 ULTRAMAT 23, portable, in sheet-steel housing with internal sample gas pump, condensation trap with safety filter on front panel, optional oxygen measurement  ULTRAMAT 23, 19“ unit with internal sample gas pump, optional oxygen measurement  ULTRAMAT 23, 19“ unit without internal sample gas pump, optional oxygen measurement ULTRAMAT 23, 19“ unit without internal sample gas pump, with separate gas path for the second component or for the 2nd and 3rd components, optional oxygen measurement  ULTRAMAT 23, 19“ unit, sample gas path version in pipes, optional separate gas path, always without sample gas pump, without safety filter and without safety trap
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ФункцииTwo independent, selective measuring principles are used in the ULTRAMAT 23. Infrared measurementAn IR source (7) at 600 °C emits an infrared radiation which is modulated with 8 1/3 Hz by a chopper (5). After passing the sample cell (4), the intensity of the radiation is measured by the detector (11, 12). The represented detector is composed of layers filled with the component to be analyzed. The energy of the middles of the IR bands of the measured gases is mainly absorbed in the first layer. The second layer absorbs the edge energy which is tuned on high selectivity in the third layer via an aperture. When passing through the layers the radiation absorption results in different pressure increases and so to a flow via the capillary hole. The microflow sensor there generates a signal which is nearly independent of interferences from components at the band edges. Note The sample gases have to enter the analyzer dustfree. Avoid condensate in the sample cells. Therefore an appropriated gas preparation is required depending of the applications. The ambient air of the analyzer should be, in a large extent, free of high concentrations of the component to be measured.
 ULTRAMAT 23, mode of operation of infrared channel (example with three-layer detector) Automatic calibration with airThe ULTRAMAT 23 can be calibrated e.g. with ambient air. During this AUTOCAL (adjustable between 0 and 24 hours), the chamber is purged with air. The detector then generates the largest signal U0 (no pre-absorption in the sample chamber). This signal is used as the reference for the zero calibration and serves simultaneously as the initial value for calculation of the full-scale value in the manner described below. The absorption in the sample chamber increases along with the concentration of the measured component. As a result of this pre-absorption, the radiation energy measured in the detector decreases, and thus also the signal voltage. The mathematical relationship between the concentration of the measured component and the signal voltage corresponds to a good approximation in the single-beam procedure of the ULTRAMAT 23 to an exponential function of form: U = U 0 · e -kc c Concentration k Device-specific constant U0 Basic signal with zero gas (sample gas without measured component) U Detector signal Changes in the radiated power, contamination of the sample chamber, or ageing of detector components have the same effect on both U0 and U, and result in: U’ = U’0 · e-kc Apart from being dependent on the concentration c, the measured voltage therefore changes continuously with increased ageing of the radiator or with persistent contamination. The mentioned influences of contamination and ageing will have a negligible effect on the measurement as long as U’ remains within a certain tolerance range which is monitored by the analyzer. The analyzers carry out automatic calibration of the zero point with ambient air every 1, 2, 3 ... 24 hours as desired. Calibration with a calibration gas is unnecessary since the calibration curve is calculated with the new U’0 value.   ULTRAMAT 23, mode of operation of oxygen measuring cell Oxygen measurementThe oxygen sensor operates according to the principle of a fuel cell. The oxygen is converted at the boundary layer between cathode and electrolyte; the resulting current is proportional to the concentration of oxygen. This sensor version with an acid based electrolyte is less sensitive to cross interferences, especially CO2, CO, CH4 and H2 than other sensor types. Essential characteristics
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