XZR500
Oxygen Analyzers
Combustion Control Analyzer
The XZR500 oxygen analyzer from Michell Instruments determines the excess air required for
optimum efficiency in industrial combustion processes. It uses innovative, sealed-reference
zirconium oxide technology to measure levels of oxygen in harsh conditions such as boilers,
incinerators and furnaces. It provides fast, accurate and reliable readings in the most difficult
environments.
Highlights
• Innovative, Metallic Sealed Reference Sensor
provides reliable and repeatable measurements
with low maintenance
• Simple air calibration reduces cost of ownership
• Robust design maximizes sensor life
• Flexible installation reduces retrofitting and
start-up costs
• Advanced design is easy to operate and
maintain
• No chance of thermal shock to sample cell
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Applications
Control combustion efficiency and monitor
emissions of:
• Boilers
• Industrial and waste incinerators
• Coal-fired power plants
• Petrochemical furnaces
• Annealing and galvanizing furnaces
• Soaking pits
• Glass and melting furnaces
• Cement kilns
• Crematoria
Oxygen Analyzers
Michell XZR500
Combustion Control Analyzer
The XZR500 measures levels of oxygen in combustion processes
and flue gases to help maintain the optimum level of combustion
efficiency. Accurate control of combustion efficiency is critical for
optimal fuel usage and reducing plant operating cost.
The XZR500 flue gas analyzer can be located close to the gas
stream, further reducing costs. Due to its unique design the
sensor is protected from damaging conditions, providing long
life in difficult environments.
Michell Instruments has over 30 years’ experience developing
high performance instrumentation capable of operating in
extreme conditions. Our customers benefit from our knowledge
of oxygen measurement at high temperatures and in corrosive,
acidic gases.
Benefits
Easy to service and virtually maintenance free, the XZR500
provides the following benefits:
Reliable and repeatable measurements
Innovative, Metallic Sealed Reference Sensor (MSRS) technology
is resistant to contamination and virtually drift free, resulting in
extended calibration intervals. These reduce maintenance, which
is extremely beneficial where measurement point locations are
difficult to access.
Easy to calibrate
The MSRS of the XZR500 allows the use of dry air as a single
calibration gas for most applications. Expensive calibration gases
are not needed. Auto calibration is available as an option.
Quick and easy to install in almost any location
The compact XZR500 can be installed in almost any location. It
can be used with most flange types to replace other analyzers
without expensive retrofitting. Insertion probes are available
in special lengths on request and can be supplied in a range
of materials including Inconel, ceramic and others to suit
application needs.
Simple to use
The analyzer is easy to operate with intuitive, menu-driven
software to select and adjust parameters.
Easy to maintain
For high-dust applications including coal-fired power stations,
the XZR500 features a highly efficient blow-back system to clear
the insertion probe of debris, further reducing maintenance.
Close-Coupled Extractive
The sensor is located in an oven inside the sensor head
bolted directly to the flue/stack. Unlike in-situ analysers the
sensor is not in the probe this ensures a longer life, greater
accuracy and no chance of thermal shock damaging the sensor.
which is
No need for aspirator or reference air:
The sample is drawn into the sensor via a Pitot effect created in
the sample probe and vented back into the stack. This means
there is no need for an aspirator (eductor) air supply saving
ongoing cost. There are no utilities required to operate the
analyser (unless the back flush option is required for extremely
dusty applications).
Marine Auxilary Boiler
Probe Selection:
Due to the modular construction of the XZR500 it is possible to
offer a range of probes to suit a variety of applications. There
is a choice of 3 lengths 0.4m (1.3’), 0.6m (1.9’) & 0.9m (2.9’)
as well as 6 different materials including 304L stainless steel for
low temperature easy applications, alloys for corrosive samples
and ceramic for temperatures up to 1300°C (2372°F).
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Oxygen Analyzers
Oxygen Analyzers
Technology
The MSRS (Metallic Sealed Reference Sensor) technology was
developed from a sensor originally designed for ultra harsh
applications in volcanoes. This makes it the instrument of choice
for oxygen measurement in a range of applications such as
power generation, waste management
MSRS
T
echnology
The MSRS responds quickly, within seconds for a 90% step
change. It is based on a metallic sealed reference which not
only shows superior performance to other sensors on the
market, but also makes the MSRS resistant to pollution and
virtually drift-free, reducing the need for calibration. It also
does not require a reference air supply.
Exploded view of sensor head assembly
with probe and counter flange
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etc.
In processes where the analyzer
operates under extreme conditions
facing high temperatures or polluted
gas, the MSRS technology of the
XZR500 delivers reliable and fast
combustion efficiency information.
XZR500 Range
Sensor head
Stack combination Oxygen Unit with metallic sealed reference
MSRS, requiring no ambient or pressurised air, with 6m (19.7’)
special cable and 400mm (15.7”) long probe
Control unit
Combustion oxygen analyzer control unit in weather-proof wall
mounting cabinet associated with the XZR500-ST.
300
378
200
222
300
Alarms 2 Alarms; user adjustable (10W)
1 Fault
Alarm
Display Resolution 0.1% in standard
(0.01% on request)
Power Supply 110 V (100 to 120) 50-60 Hz or 220 V (190 to
240) 50 Hz
Power Consumption 110 V A
Ambient Temperature 0°C (32°F) to 55°C (131°F)
Range
Sensor Temperature 700°C (1292°F)
Operating Humidity 5 to 90% RH non-condensing
Physical
Dimensions
control unit 300 x 300 x 200mm (11.8 x 11.8 x 7.8”)
sensor 290 x 135 x 650mm (11.4 x 5.3 x 25.6”)
Weight 10 to 15 kg (22 to 33 pounds) depending on
configuration
Wetted Materials 304 L Stainless steel (700°C (1292°F))
(Maximum Temperature) Inconel 600 (1000°C (1832°F))
HR160 (600°C to 1000°C (1112°F to 1832°F))
C2000 (600°C (1112°F))
Halar coating (120°C (248°F))
Ceramic (1300°C (2372°F))
Probe Lengths 0.4, 0.6 and 0.9m (15.75, 23.62, 35.43 in)
Installation Stack and Wall-Mount
Housing Ingress Weather proof enclosure to sensor: IP53
Protection Control unit: IP52
11.42 in 11.42 in
Oxygen Analyzers
Sensor Type
Measurement Principle Zirconium oxide sensor with metallic sealed
reference and K Type T/C
Performance
Gas Requirements Typical exhaust gas
Measurement Range 0.01% to 25% oxygen
Accuracy Better than ± 2% of reading
Response Time (T90) 20 seconds
Repeatability ± 0.1% of reading
Stability 1% per month
Linearity Better than ± 1% of reading
Sample Flow Rate Flue Gas at 0.5m/s (17.65ft/s) minimum rate
Maximum Sample Application dependent
Pressure
Maximum Sample 1300°C (2372°F) (see probe selection in
Temperature Wetted Materials)
Outputs
Output Signal One 0/4-20 mA linear, with isolated output; 2nd
output optional
Output Load Over 1000 Ω
Self-diagnostics Includes: oven under temperature;
thermocouple separation; calibration fail;
EEPROM corruption. (Diagnostic information
displayed on panel meter.)
Output Ranges Configurable between 0.01 to 25%
Technical Specifications
Dimensions
3.82 in
Michell Instruments Ltd, Rotronic Instruments Corp. 135 Engineers Road, Suite 150, Hauppauge
NY 11788. Tel: 631 427 3898, Email: us.info@michell.com,
Michell Instruments adopts a continuous development programme which sometimes necessitates specification changes without notice.
Issue no: XZR500_97205_V5.1_US_0718
10.24 in
5.24 in
8.74 in
7.87 in
Web: www.michell.com/us
11.81 in
14.88 in
11.81 in
© 2018 Michell Instruments
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