ABB 769198 Caldos25 Thermal Conductivity Sensor

ABB 769198 is a specialized sensor component associated with the ABB Caldos25 continuous gas analyzer platform. The component is identified in ABB product information as a Caldos25 sensor for a sealed reference gas air configuration. Its function is related to thermal conductivity measurement, making it part of the analytical measurement path rather than a general-purpose industrial sensing device.

The Caldos25 platform is designed for continuous gas analysis, and the sensing element is an important part of the analyzer’s measurement architecture. ABB 769198 is therefore relevant to applications where gas composition needs to be evaluated through thermal conductivity characteristics. The complete part number should be retained when identifying the component because different Caldos25 configurations can use different sensor arrangements and reference-gas concepts.

Product Identification

• Manufacturer: ABB
• Part Number: 769198
• Product Family: Caldos25
• Product Type: Thermal Conductivity Sensor
• Configuration: Sealed Reference Gas Air
• Application: Continuous Gas Analysis
• Measurement Technology: Thermal Conductivity
• Product Category: Analytical Measurement Component
• Associated Equipment: ABB Caldos25 Analyzer
• Related Analyzer Platform: ABB EL3060 / 3060

ABB Caldos25 Sensor Function

The ABB 769198 sensor forms part of the measurement system within a Caldos25 analyzer. Its primary purpose is to provide the sensing function required for thermal conductivity-based gas analysis.

Gas mixtures have different thermal conductivity characteristics depending on their composition. A thermal conductivity analyzer uses this physical property to determine information about the sample gas. The sensor therefore operates as part of an analytical measurement chain in which the sensing element, gas path, electronics and analyzer software work together.

This makes ABB 769198 fundamentally different from a simple temperature probe, pressure sensor or flow detector. Its intended function is specifically connected with gas composition measurement within the Caldos25 analytical system.

Thermal Conductivity Measurement

Thermal conductivity is the ability of a material to transfer heat. In gas analysis, differences in thermal conductivity between gases can be used as an analytical measurement principle.

A thermal conductivity detector evaluates changes in the heat-transfer behavior of the gas surrounding the sensing structure. When the composition of the measured gas changes, its thermal properties can also change. The analyzer electronics can process the sensor response and convert it into an analytical result according to the configured measurement application.

The accuracy and interpretation of the measurement depend on the analyzer configuration, reference condition, sample gas and calibration parameters. Consequently, the sensor should always be considered together with the complete Caldos25 analyzer.

Sealed Reference Gas Configuration

The ABB description for 769198 specifically identifies a sealed reference gas air configuration. This distinguishes the component from Caldos25 configurations using other reference-gas arrangements.

A reference condition is important in thermal conductivity analysis because the sensor response depends on comparison between the measured gas and a defined reference environment. A sealed reference arrangement provides a defined internal reference condition within the sensor assembly.

The reference gas configuration is therefore an important identification characteristic when selecting or documenting the 769198 component.

Continuous Gas Analysis

The Caldos25 platform belongs to ABB’s analytical measurement equipment for continuous gas analysis. Continuous analyzers are used where gas composition needs to be monitored as part of an ongoing industrial process rather than measured only through occasional laboratory sampling.

Such applications can include process monitoring, combustion-related analysis, production control and other industrial processes where gas composition provides important information about operating conditions.

ABB 769198 contributes to the analytical measurement function by providing the thermal conductivity sensing element used within the compatible Caldos25 configuration.

Gas Analyzer Architecture

A gas analyzer is composed of several functional sections. These can include the sample-gas path, reference-gas arrangement, sensor assembly, electronic signal processing, temperature control and analyzer control electronics.

The 769198 sensor should therefore be understood as one component within this complete architecture. It does not independently constitute a complete gas analyzer.

The sensor’s output must be processed by the associated Caldos25 electronics before the analyzer can provide a meaningful analytical value.

Application with ABB Caldos25

Available product catalogs identify 769198 specifically within the ABB Caldos25 product family and describe it as a sensor for sealed reference gas air. Other Caldos25 components listed in the same product family include base plates, heating elements, analyzer modules, sensor-related electronics and mechanical components.

This confirms that ABB 769198 is part of a dedicated analyzer architecture rather than a standalone generic sensor.

When documenting the component, the Caldos25 family should therefore be recorded together with the 769198 part number whenever possible.

Related ABB EL3060 Applications

Available technical product records also associate ABB 769198 with ABB EL3060/3060 gas analyzer equipment and Caldos25 analyzer modules. This indicates that the component can occur within ABB analytical measurement systems where Caldos25 technology is integrated into a broader gas analysis platform.

The exact compatibility depends on the analyzer configuration, hardware revision and measurement arrangement. The presence of the 769198 part number alone should not be used to assume compatibility with every ABB gas analyzer.

Technical Specification Summary

Measurement Stability

Thermal conductivity measurements are influenced by the physical properties of the sample gas and by the operating environment of the sensor. Temperature stability is particularly important because thermal conductivity itself is temperature-dependent.

For this reason, analytical gas analyzer systems are designed with controlled measurement conditions and associated compensation or calibration functions. The sensor and analyzer electronics must operate together to maintain the intended measurement behavior.

The 769198 component should therefore be maintained and configured as part of the Caldos25 measurement system rather than treated as an independent sensing element.

Calibration and Analytical Performance

Calibration is an important part of gas-analysis instrumentation. The relationship between sensor response and gas concentration depends on the measurement application, reference condition and analyzer configuration.

The 769198 description indicates a calibrated sensor configuration associated with the Caldos25 platform. However, the exact calibration values, measurement range and target gas depend on the specific analyzer setup.

For technical work, the applicable analyzer documentation and calibration data should be used instead of assuming a universal calibration curve for the 769198 part number.

Sample Gas Considerations

The composition of the sample gas is a central consideration in thermal conductivity analysis. Different gas components can produce different thermal conductivity responses, and the analyzer configuration is designed around the intended analytical application.

Sample-gas pressure, temperature, flow conditions and composition can all affect the measurement environment. These parameters should therefore be maintained within the conditions specified for the complete analyzer.

ABB 769198 should be selected according to the Caldos25 configuration and intended gas-analysis application.

Analyzer Integration

The sensor is integrated into the analyzer’s mechanical and electronic architecture. Correct installation requires the sensor to be compatible with the analyzer’s internal mounting arrangement, gas path and electronic interface.

The associated electronics convert the sensor response into information that can be processed by the analyzer controller. This allows the complete system to generate an analytical output suitable for process monitoring.

Because the sensor is part of this integrated architecture, replacement identification should include both the component number and the analyzer model.

Maintenance Considerations

Maintenance of ABB 769198 should be performed as part of the overall Caldos25 analyzer maintenance procedure. The sensor environment, gas path and associated electronic connections can all influence analytical performance.

If the analyzer develops an abnormal measurement, engineers should evaluate the complete system rather than immediately attributing the condition to the sensor. Sample-gas conditions, contamination, temperature control, reference conditions, calibration and signal processing can all affect the result.

A systematic diagnostic approach helps distinguish sensor-related conditions from problems elsewhere in the analyzer.

Sensor Replacement Identification

The complete ABB part number 769198 should be used as the primary identification reference when documenting this component. The product family should be recorded as Caldos25, and the reference configuration should be identified as sealed reference gas air.

This information is useful because the Caldos25 family includes several related components with different functions, including base plates, circuit boards, heating components and analyzer modules.

For engineering records, a suitable identification format is “ABB 769198 — Caldos25 Thermal Conductivity Sensor, Sealed Reference Gas Air.”

Analytical Measurement Applications

Thermal conductivity gas analyzers are suitable for industrial processes where changes in gas composition can be correlated with thermal conductivity. The analytical measurement can support process supervision and control by providing information about the composition of the gas stream.

The actual application depends on the gas mixture, analyzer configuration and measurement range. A Caldos25 system may be configured for a particular analytical task, and the sensor must correspond to that configuration.

ABB 769198 therefore has a specific role within the analytical system and should not be generalized as a universal gas sensor.

Engineering Documentation

For equipment databases, the preferred product identification is ABB 769198. The description can be recorded as “Caldos25 Thermal Conductivity Sensor for Sealed Reference Gas Air.”

Additional engineering fields can include the host analyzer model, measurement component, reference-gas configuration, sample-gas application and analyzer channel.

Maintaining these details provides a clearer technical record and reduces the possibility of confusing the sensor with other Caldos25 spare components.

Product Identification and Compatibility

ABB product information identifies 769198 within the Caldos25 product family. Available catalogs describe the item as “Sens. Caldos25, seal. ref. gas air, cal.” This establishes the primary product function and configuration.

Other records associate the part with ABB EL3060/3060 gas analyzer systems and Caldos25 analyzer modules. These references support its classification as a specialized analytical sensor component.

Compatibility should nevertheless be confirmed using the specific analyzer documentation, because gas-analysis systems can have configuration-dependent components and measurement arrangements.

Conclusion

ABB 769198 is a Caldos25 thermal conductivity sensor designed for a sealed reference gas air configuration. It is a specialized analytical measurement component used within ABB gas analyzer systems.

The sensor operates according to the thermal conductivity measurement principle, where differences in gas thermal properties are used to obtain analytical information. Its function depends on integration with the Caldos25 analyzer’s gas path, reference arrangement, electronics and calibration system.

The complete identification “ABB 769198” should be retained in technical and maintenance records. When evaluating compatibility, the Caldos25 analyzer model, reference-gas configuration, sample-gas application and applicable technical documentation should also be considered. This approach provides a more accurate basis for identifying the correct sensor and understanding its role within the complete ABB analytical measurement system.