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Process Oxygen Analyzers NDIR sensor O2 CH4 CO CO2 H2 methane gas analyser Hydrogen gas analyser
Process oxygen analyzers, also known as oxygen gas analyzers or oxygen concentration analyzers, are instruments specifically designed for measuring and monitoring the oxygen content in industrial processes. These analyzers play a crucial role in various applications, including combustion control, environmental monitoring, chemical processes, and safety systems. Here are some key features and characteristics of process oxygen analyzers:
1. Measurement Principle: Process oxygen analyzers utilize
different measurement principles to determine the oxygen
concentration in a gas sample. Some common measurement techniques
include:
- Paramagnetic: Paramagnetic oxygen analyzers measure the magnetic
susceptibility of oxygen, which is proportional to its
concentration. This principle is based on the fact that oxygen is
weakly attracted to magnetic fields, allowing for accurate and
reliable oxygen concentration measurements.
- Zirconia: Zirconia-based oxygen analyzers rely on the
electrochemical properties of zirconia to measure the oxygen
concentration. Zirconia sensors consist of a solid-state
electrolyte that conducts oxygen ions, and the oxygen concentration
is determined by measuring the potential difference between the
reference and measurement electrodes.
- Galvanic: Galvanic oxygen analyzers operate based on the
principle of electrochemical oxidation of oxygen. The oxygen
molecules are reduced at the cathode, generating a current that is
proportional to the oxygen concentration.
- Optical: Optical oxygen analyzers employ the luminescence
quenching phenomenon. The sample gas is passed through a sensor
cell containing a luminescent material, and the oxygen molecules
quench the luminescence, allowing for oxygen concentration
measurement.
2. Measurement Range and Accuracy: Process oxygen analyzers are
available in various measurement ranges, typically expressed as a
percentage of oxygen concentration. The measurement range can vary
depending on the specific application requirements. The accuracy of
the analyzer is an important consideration and is typically
specified as a percentage of the full-scale range.
3. Sampling System: Process oxygen analyzers incorporate a sampling
system to extract gas samples from the process stream. The sampling
system may include sample probes, filters, flow control devices,
and sometimes sample conditioning components to ensure the gas
sample is representative and suitable for analysis.
4. Response Time: The response time of process oxygen analyzers is
the time taken to reach a stable measurement after the gas sample
is introduced. Faster response times are desirable in applications
where rapid changes in oxygen concentration need to be monitored
and controlled.
5. Display and Output: Process oxygen analyzers provide real-time
measurement data, which can be displayed locally on the analyzer
itself. The data may include oxygen concentration readings, trends,
alarms, and other relevant information. Additionally, analyzers
often offer analog outputs (e.g., 4-20 mA), digital outputs (e.g.,
Modbus, Profibus), or other communication interfaces for
integration with control systems and data acquisition systems.
6. Calibration and Maintenance: Regular calibration and maintenance
are necessary to ensure accurate and reliable measurements. Process
oxygen analyzers typically require periodic calibration using known
gas mixtures or calibration gases. They may also feature
self-diagnostic capabilities and automatic calibration routines to
simplify the calibration and maintenance process.
7. Hazardous Area Considerations: In certain applications, process
oxygen analyzers may need to be designed for installation in
hazardous areas where explosive atmospheres may be present. These
analyzers are often designed with explosion-proof enclosures and
certified according to relevant safety standards.
The selection of a process oxygen analyzer depends on factors such
as the specific application, the measurement range required, the
environmental conditions, and any applicable industry standards or
regulations. It is important to consult with manufacturers or
experts to choose the most suitable analyzer for a particular
process.
Process gas analyzer is an important tool in process safety and quality control. It helps to monitor and optimize the chemical composition of process gases. The gas analyzer market is segmented by type, technology, application, and geography.
Our gas analyzers high-stability infrared detector and TDL technology for the simultaneous measurement of CO, CO2, and CH4. These gases are suitable for challenging applications such as syngas and gasification atmospheres. In addition, analyzers may use a compensated thermal conductivity cell for H2. Electrochemical O2 sensors may also measure percent levels of oxygen in the sample gas stream.
INFRARED NDIR DETECTOR | |||||
GAS | Lowest Range | Highest Range | LR resolution | HR resolution | Accuracy FS |
CO | 0-5% | 0-100% | 0,001 % | 0,01 % | ≤ ±2% |
CO2 | 0-5% | 0-100% | 0,001 % | 0,01 % | ≤ ±2% |
CH4 | 0-5% | 0-100% | 0,001 % | 0,01 % | ≤ ±2% |
CnHm | 0-10% | 0,001 % | 0,01 % | ≤ ±2% | |
THERMAL CONDUCTIVITY DETECTOR (TCD) | |||||
H2 | 0-20% | 0-100% | 0,01% | 0,01% | ≤ ±3% |
ELECTROCHEMICAL DETECTOR (ECD) | |||||
O2 | 0-25% | 0,01 % | 0,01 % | ≤ ±3% |