![Walsn Oxygen Analyser [OAM-800 & OAM-800-R]](http://hk58cc1e.pic47.websiteonline.cn/upload/twou.jpg)
Overview
The OAM series are ideal for measuring the continuously oxygen concentration in flue gases of boilers and furnaces. The OAM-800 is the integrated stand-alone oxygen analyser in which the zirconium oxide cell is placed directly in the stream of the products of combustion. The OAM-800-R is designed for remote control. The integrated or remote analyser is reliable for oxygen measurement and features high accuracy and low maintenance.
Product Features
Accurate and reliable measurement, measurment accuracy within 1% range.
Zirconium cell diagnosis function, which is able to check Zirconium cell operation status, as well as prompt
The Zirconum cell boasts a nanoscale coating technology, and platinum welding process to ensure an air tight seal, durable working life and high measurement accuracy
Field repalcement, easy daily maintanence
Able to offer CRTube wear resistant & anti-corrosion protection services, extend the working life
Specifications
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Measuring range |
0~25%VOL.O2 |
Zirconia oxide sensor |
Suitable for all normal positive and negative flue pressures |
|
Accuracy |
±1% of full scale |
Zero calibration gas |
1%O2 (Background gas :N2) |
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Repeatability |
±0.5% of full scale analogue outputs |
Range calibration gas |
8%O2 (Background gas: N2) or Air |
|
Response time |
T0 < 3S,T90 <10S |
Gas fl ow |
300ml/min (0.64ft3/hr) |
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Measuring method |
Zirconia oxide sensor |
Opearting Temperature |
-20 ~ +70°C (-4 ~ 158°F) |
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Probe Material |
316L Stainless Steel |
Gas Temperature |
20 ~ 600°C |
|
IP level |
IP65/NMEA4 |
Power Supply |
100 ~ 240VAC, 50 ~60Hz |
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Parameters |
O2 concentration |
Damping |
1 ~ 100, optional |
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Calibration gas |
Serial Output |
RS485 Modbus protocol |
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Sensor tempurature |
Fault Indication |
LED indication and error codes |
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Fault messages |
Calibration |
Optional track or hold |
|
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Analogue Outputs |
Single channel isolated 0~10mA, 0~20mA, 2~20mA, 4~20mA, which can be selected through the menu. |
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Probe Length/Weight |
0.5m, 6.6Kg; 1.0m, 8.3Kg; 1.2m, 9.1Kg; 1.5m, 13.0Kg; 2.0m, 13.9Kg; 2.5m, 15.8Kg; 3.0m, 16.7Kg |
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Principle
Walsn’s OAM-800 and OAM-800-R oxygen analyser units boast a stable secure zirconia sensor, which consists of zirconium dioxide (ZrO2), and a surface that is coated with a porous plantinum electrode layer. It utilizes a unique platinum welding process to obtain the junction of electrode.
Once consistancy has been achieved,the detected gas enters the inner side tube of the zirconium oxide sensor. At the same time, a sample of the reference gas (Air) enters through the outer side of the sensor.The zirconium oxide sensor will then measure each sample for a potential oxygen concentration difference.
The oxygen concentration reading corresponds with the sensor's temperature and detected gas concentration. Calculations are based on the Nernst Equation.
