Sensor Retainer
Twist gas cap bayonet fitting counterclockwise to release
Gas Cup
Sensor and Printed Circuit Board
Sensor electrical connector mates with pins on analyzer’s main board

Maintenance

6.3 Smart Sensor Replacement

Bacharach’s Smart sensor technology allows new sensors to be installed without needing to be calibrated inside the analyzer.

NOTE: Sensors may be purchased with and without the Smart sensor technology PCB. See Section 6.4 on how to change just the sensor itself. Calibration must be performed if the sensor is purchased without the Smart technology PCB. Refer to Section 8.1 Replacement Parts for list of sensors and part numbers of both types.

Replace the oxygen sensor when its automatic calibration fails and the ana- lyzer displays an O2 sensor error at the end of warm up. Refer to Section 4.2.

NOTE: The O2 sensor and PCB is not Smart sensor technology. Only the sen- sor itself, not the PCB, needs to be purchased when the sensor needs replaced.

Replace a gas sensor when it can no longer be calibrated, as evidenced by “Bad Calibration Sensor End of Life” being displayed during its calibration procedure. Refer to Sections 5.6 thru 5.10.

Refer to Section 8.1 for a listing of sensor part numbers. Also, see Figure 6-2 on page 6-3 for sensor positions.

Do the following to replace a Smart sensor:

1.Turn OFF the analyzer.

2.Remove the battery cover.

3. Remove the sensor retainer.

4. Remove the tubing from the gas cup of sensor being replaced.

5. Unplug the sensor along with its printed circuit board from the analyzer’s main board.

6. Remove the sensor’s gas cup by twisting its bayonet fitting counterclockwise, and then pulling the cup straight up.

7. Attach the gas cup to new sen- sor, making sure that when the sensor is plugged into analyz-

er’s main board, the tubing connections on top of gas cup are aligned as shown in Figure 6-3 on page 6-4.

8.Plug the sensor into analyzer; and then reattach tubing to gas cup.

9.Install the sensor retainer and battery cover.

10.Turn ON the analyzer and confirm that no sensor errors occur during warm up.

Instruction 24-9448

6-7

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Bacharach 24-9448 manual Smart Sensor Replacement

24-9448 specifications

The Bacharach 24-9448 is a sophisticated instrument designed for detecting and measuring hazardous gases, particularly in environmental and industrial settings. Renowned for its accuracy and reliability, this portable gas analyzer serves a crucial role in ensuring safety and compliance in various applications, including HVAC, refrigeration, and environmental monitoring.

One of the standout features of the 24-9448 is its advanced sensor technology. The device utilizes electrochemical sensors that provide real-time readings of specific gas concentrations, including carbon monoxide, carbon dioxide, and other toxic gases. These sensors are designed to be sensitive and selective, ensuring they deliver precise measurements without interference from other substances in the environment. This is particularly important in industrial settings where multiple gases may be present.

The Bacharach 24-9448 also boasts a user-friendly interface with a clear display that makes it easy for operators to interpret results quickly. The unit features a simple menu navigation system, allowing users to access different functions without hassle. This design consideration enhances usability, especially in high-pressure situations where every second counts.

Portability is another key characteristic of the 24-9448. Weighing in at just a few pounds, it is easy to transport and operate in various locations, whether it be on a job site or in an environmental monitoring scenario. The robust housing is designed to withstand the rigors of fieldwork, ensuring longevity and durability despite challenging conditions.

Moreover, the device includes data logging capabilities, enabling users to store and later review measurements. This feature is essential for compliance documentation and for analyzing trends over time. Users can download data for further analysis, aiding in thorough reporting and decision-making processes.

In addition to its core capabilities, the Bacharach 24-9448 offers flexibility with adjustable calibration settings, accommodating different gas types and concentration ranges. This adaptability ensures it can meet the specific needs of diverse applications, making it a versatile tool in the field.

Overall, the Bacharach 24-9448 is an essential instrument for professionals in various sectors. Its combination of advanced sensor technology, user-friendly design, portability, and data logging capabilities solidifies its position as a leading choice for gas detection and measurement. Whether for routine checks or emergency responses, this analyzer provides the reliability that ensures safety in potentially hazardous environments.