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ZIRCONIA OXYGEN ANALYZER CO2
Recovery plants PPM O2 analysis in CO2 from TPI Reboiler -Stripper
systemThe Zirconia Oxygen Analyzer utilizes an advanced zirconia sensor to accurately determine oxygen content in process gases.Microprocessor-based electronics and other improvements allow measurements from ppm levels to 100 %oxygen. • Accurate & stable Oxygen measurement in gases from 0.1 ppm to 100% • Fast,easy one-point calibration • Trouble-free performance • Low maintenace Applications & Uses. The Zirconia Oxygen Analyzer is suitable for monitoring and/or controlling gas streams or atmospheres such as in air separation, heat treating,ceramic manufacturing and other processes. For dirty or wet gas applications,a suitable sampling system may be required. How It Works. Sample gas enters the inlet port through a needle valve and flows into a ceramic inlet tube.It then flows through the annular space between the inlet tube and the inside of the zirconium oxide oxygen sensor,then out through the outlet port and a flowmeter.When there are no combustibles present in the sample gas,the analyzer measures total oxygen.When combustibles are present,a platinum based catalyst,at the end of the ceramic tube,ensures that the sample reaches equilibrium before contacting the inner electrode. It is therefore possible to measure either oxygen excess or deficiency in air/fuel mixtures. The zirconium oxide sensor is heated and closely controlled at 700 °C (1292 °F).As the sample contacts the inner electrode of the heated sensor,an electrical signal is generated,proportional to the logarithm of the ratio of the oxygen concentration in the sample gas to the oxygen concentration in a reference gas contacting the outer electrode.The digital display/output unit displays O2 in ppm or %.It also displays other parameters including O2 sensor millivolts and sensor temperature in °C or °F.Ambient air is used as the reference gas on the outside of the electrochemical cell. SPECIFICATIONS: PERFORMANCE. Accuracy: 0.1 ppm from 0 to 5 ppm or ±2% of reading. Repeatability: ±0.2%of reading (sensor output). Response time: Less than 1 second for 90%of step change. Stability: Less than 0.1%of sensor output per month drift. Atmospheric pressure influence: No effect if sampling gas is vented to the atmosphere; otherwise 0.13%of reading per mm Hg. Line voltage influence: No effect on sensor output. Ambient temperature influence: No effect. Sample flow rate influence: No effect if sample flow rate equals 1000 ± 150 cc/min (2.1 ± 0.3 SCFH) Background gas variation effect: No effect if sample gas is clean, dry and free of combustibles. FEATURES  •
Measures oxygen from 0.1 ppm to 100 percent;can measure oxygen in
reducing gases.• Fast response (90%of step change in less than 1 second). • Extremely stable sensor operation. • Months of trouble-free service; calibration checks or adjustments seldom required;one-point calibration is sufficient for entire range from ppm to percent oxygen. • Accuracy increases at low oxygen concentrations. • Suppressed zero (90 to 100%with reference flow)with special cell housing. • Differential measurement is possible with special cell housing. • High pressure applications with special cell housing. OPERATING. Standard measuring range: Any portion of the range from 0.1 to 10 ppm O2. Optional measuring ranges: Field-selectable for any portion of the 0.1 ppm to 100% range. The digital panel meter is software-configurable to display the following parameters: . Oxygen ((ppm or %). . Temperature ((°C or °F). . Sensor ((mV). . CJC temperature (°C or °F). Output ranges: 0 to 1000 mV (sensor output). 0/4 to 20 mA.0 to 2 V (D/O unit output). Alarm circuits: Dual alarm contacts. Contact rating 3 A,230 V, SPDT,fail-safe. Communications: Standard RS232 serial port. Sample requirements: Sample flow:1000 ± 150 cc/min (2.1 ± 0.3 SCFH)). Sample pressure: Atmosphere. Ambient requirements: Relative Humidity: 90 °% maximum. Temperature Range: -25 °to 50 °C (-13 °to 122 °F). Power requirements: 90 to 265 VAC,50/60 Hz,250 W max. Fuse: 3 A, 250 V, antisurge, 5 x 20 mm. Materials contacting sample gas: 316 stainless steel,ceramic and platinum. Connections: Sample inlet and outlet: 1/8-inch Swagelok ®. Electrical analyzer and D/O unit:1/2-inch conduit. Enclosures: NEMA 4X/IP66. Dimensions: Sensor enclosure: 7.0x11.0 in.(178x279mm). Electronics enclosure: 6.75 x 8.0 in.(171 203 mm). Warm up time:30 minutes. Calibration with certified mixtures of 10 ppm O2 in N2 . European compliance: This unit complies with EMC Directive 89/336/EEC and 73/23/EEC Low Voltage Directive (Installation Category II,Pollution Degree 2).  TRACE
O2 APPLICATIONSAir separation plants. Glove boxes. Semiconductor manufacturing processes. Heat treat & metallurgical processes. Glass & ceramic research. Inert gas purity. Blanket gas monitoring. Medical research. Breathing mixtures. Gas blending. SPECIAL APPLICATIONS Dew point of hydrogen-containing atmospheres. Combustion air requirement of gaseous fuel. Welding atmospheres. Dew point downstream of air dryers. Hydrogen content of steam. Gas chromatography detector. Glass forehearth. Glass fiber apparatus. Gas generators. |
Tecno Project Industriale s.r.l. - 24035 Curno (BG) - Italy - via Enrico Fermi, 40
tel. +39 035 4551811 - fax +39 035 4551895 - e-mail: tpi@tecnoproject.com
P.Iva 01070500168