Oxygen Analyzer

OAM-800, OAM-800-R and OAM-802 are ideal for continuously measuring the oxygen concentration of flue gas in boilers and furnaces. Walsn OAM is a stand-alone oxygen analyzer, which allows the zirconium oxide cell directly placed into the stream of flue gases.

Product Details

Overview

OAM-800, OAM-800-R and OAM-802 are ideal for continuously measuring the oxygen concentration of flue gas in boilers and furnaces. Walsn's OAM is an integral stand-alone oxygen analyzer, which can place the zirconium oxide cell directly into the stream of flue gases.

The direct insertion detecting method is able to display the on-site data and fault information; Its features include high accuracy, fast measurement and low maintenance. The detecting results of oxygen concentration from OAM-800, OAM-800-R and OAM-802 will be used for the control system or the boiler operators, which will assist to adjust the boiler's operation as well as the fuel/air ratio in order to achieve the maximum combustion efficiency.

Applications

Oxygen analyzers are used to test oxygen content in flue gases, which can be applied to the following situations:

BOILER：Power Plant Boilers, Marine Boilers, Recycle Gas Boilers.

FURNACES：Heat Treatment Furnaces, Glass Firing Furnaces, Cracking Furnaces.

ROTARY KILN：Ore Sintering Kiln, Cement Firing Kiln, Aluminum Ore Processing Sintering Kiln.

Principle

Walsn's OAM oxygen analyzer has a stable secure zirconia sensor, which consists of zirconium dioxide (ZrO₂), and a surface that is coated with a porous platinum electrode layer. It utilizes a unique platinum welding process to obtain the junction of two electrodes.

Each OAM-800、OAM-800-R and OAM-802 oxygen analyzer adopt a built-in heater to keep the zirconia sensor temperature constant, which is of the utmost importance when calculating accurate readings.

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Once consistency 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 air enters through the outer side of the sensor. The zirconium oxide sensor will then measure each sample for a potential oxygen concentration difference. In other words, the oxygen concentration reading corresponds to the sensor's temperature and the detected gas concentration. It is calculated based on the Nernst equation.

Specifications

• Single point, straight plug sensor which can achieve a quick, accurate and reliable measurement, measurement accuracy within the 1% range.

• On-site replacement, easy daily maintenance

• Output signal system complies with the user's on-site monitoring requirements, and can be connected to any process control equipment

• Automatic calibration

• Power consumption gives longer service life

• Use platinum to lead a derived analog signal

• Zirconium cell diagnosis function, which is able to check Zirconium cell operation statuses, as well as prompt fault alarm information

• The Zirconium cell boasts a nanoscale coating technology and a platinum welding process to ensure an airtight seal, durable working life and high measurement accuracy

• Built-in heaters ensure a stable working temperature of the Zirconium cell resulting in longer service life

• Able to offer CRTube wear-resistant & anti-corrosion protection services, extending the service life.

Options

		X	X	X	X	X
Contents	Type: OAM-800 / OAM-802
Structure	Integral
Structure	Remote	~R
Remote	Probe (detecting unit)		~D
Remote	Controlling unit		~A
Optional Components	Medium temperature Adaptor(≤900℃）			~M
Optional Components	High temperature Adaptor(≤1400℃）			~H
Inserted Depth	0.5m				~05
	1.0m				~10
	1.2m				~12
	1.5m				~15
	2.0m				~20
	Customized				~40
Protection Tube	Anti-abrasion and anti-corrosion protection tube （stainless steel）					~SS
	Anti-abrasion and anti-corrosion protection tube （ceramics）					~CE
	Anti-abrasion and anti-corrosion protection tube （special materials）					~SP

OAM-800 Integrated Oxygen Analyzer

Walsn's integral Oxygen Analyzer consists of both a detecting unit and a control unit, which greatly reduces the cost of the instrument and allows for a much easier installation process.

This Oxygen Analyzer is installed at the flue, allowing for the detection unit (the probe) to collect combustion gas through the Zirconia sensor and it's adjustable heating mechanism.

The control unit integrates the operation panel, calibration unit, relay connections, and analog signal output. A probe heating unit, analyzer signal input, thermocouple, and cold junction input terminals are also included, and are located inside the terminals of integrated function.

Probe（detecting unit）
Measuring range	0—25% v/v O₂	Zirconia oxide sensor	Suitable for all normal positive and negative flue pressures
Accuracy	±1 of full scale	Zero calibration gas	1% O₂ in nitrogen
Repeatability	0.5% of full-scale analogue output	Gas flow	300ml/min
Measuring method	Zirconia oxide sensor	Operating temperature	-20℃ — -70℃/ -4°F — 158°F
Probe material	316 stainless steel	Gas temperature	20℃ — 600℃ / -68°F — -1112° F
IP level	IP65/NEMA4	Power supply	100VAC—220VAC,50Hz—60Hz, depending on practical voltage need
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

Control unit
Display type	Single-line 4 digit LED	Range	0—25%
Parameters	O₂ concentration	Damping	1—100，optional
	Calibration gas	Fault indication	LED indication and error codes
	Sensor's temperature	Calibration	Operation track or hold
	Fault messages
Analogue outputs	Single channel isolated 0-10mA,0-20mA,2mA-20mA，4mA-20mA，which can be selected from the menu

OAM-800-R Remote Oxygen Analyzer

Walsn's OAM-800-R is designed for remote control management. Its integral remote analyzer is highly reliable for measuring oxygen concentration, and delivers the highest accuracy with low maintenance.

The detecting unit is installed into flue gas duct, and is equipped with an internal temperature control unit and Zirconia sensor.

The control unit integrates the operation panel, calibration unit, relay connections and analog signal output.

Probe（detecting unit）
Measuring range	0—25%v/v O₂	Flue gas pressure	suitable for all normal positive or negative flue pressures
Accuracy	± 1 of full scale	Zero calibration gas	1% O₂ in nitrogen
Repeatability	0.5% of full scale on analog outputs	Span calibration gas	air or 8% O₂ in nitrogen
Response time	initial response time within 3s；T90<10s	Operating temperature	-20℃ — 70℃/ -4°F — 158°F
Material	316L stainless steel	Gas temperature	20℃ — 600℃ / -68°F — -1112° F
IP level	IP65/NEMA4	Power supply	100VAC—220VAC,50Hz—60Hz, depending on practical voltage need
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

图片14.jpg

Control unit
Display type	Single-line 4 digit LED	Range	0—25%
Parameters	O₂ concentration	Damping	1—100，optional
	Calibration gas	Fault indication	LED indication and error codes
	Sensor's temperature	Calibration	Operation track or hold
	Fault messages
Analogue outputs	Single channel isolated 0-10mA,0-20mA,2mA-20mA，4mA-20mA，which can be selected from the menu

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OAM-802/OAM-802-R Explosion-proof Oxygen Analyzer

Walsn OAM-802 / OAM-802-R is a straight-cut explosion-proof oxygen analyzer using non-sampling analysis.

The product can measure the residual oxygen concentration in flue gas continuously and stably. The product has the features of rapid calibration, automatic diagnosis, easy to use, reliable and easy to maintain.

Marking: Exd Ⅱ C T6 GB

Probe（detecting unit）
Measuring range	0—25%v/v O₂	Flue gas pressure	suitable for all normal positive or negative flue pressures
Accuracy	± 1 of full scale	Zero calibration gas	1% O₂ in nitrogen
Repeatability	0.5% of full scale on analog outputs	Span calibration gas	air or 8% O₂ in nitrogen
Response time	initial response time within 3s；T90<10s	Operating temperature	-20℃ — 70℃/ -4°F — 158°F
Material	316L stainless steel	Gas temperature	20℃ — 600℃ / -68°F — -1112° F
IP level	IP65/NEMA4	Power supply	100VAC~220VAC,50Hz~60Hz, depending on practical voltage need
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

图片16.jpg

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Control unit
Display type	Single-line 4 digit LED	Range	0—25%
Parameters	O₂ concentration	Damping	1—100，optional
	Calibration gas	Fault indication	LED indication and error codes
	Sensor's temperature	Calibration	Operation track or hold
	Fault messages
Analogue outputs	Single channel isolated 0-10mA,0-20mA,2mA-20mA，4mA-20mA，which can be selected from the menu