Instruction 24-9448
Be sure to remove any shorting spring from the new sensor pins before installing! There is no shorting spring on the O2 or NO sensors.
Printed
Circuit Board
Sensor electrical connector mates with pins on analyzer’s main board
Adhesive foam disk
Gas Cup
Sensor
Sensor Retainer
Twist gas cap bayonet fitting counterclockwise to release

Maintenance

6.4 Sensor Only Replacement

1.All sensors are replaced in a similar manner. Do the following to replace either the O2, CO-LO, CO-HI, NO, NO2, or SO2 sensor. Refer to Section 8.1 Replacement Parts for list of sensors and part numbers.

2.Turn OFF the analyzer.

3.Remove the battery cover.

4.Remove the sensor retainer.

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

6.Unplug the sensor along with its printed circuit board from the analyz- er’s main board.

7.Remove the sensor’s gas cup by twisting its bayonet fitting counter- clockwise, and then pulling the cup straight up.

8.Carefully remove the old sensor from the Smart sensor PCB, keeping in mind that there is an adhesive foam disk in between the PCB and sensor. Gently remove any adhesive from from the PCB.

Important! When replacing the O2 sensor, be sure that the “+” sensor pin plugs into the PCB socket that is also marked “O2+”.

When replacing an NO sensor, also replace the bias battery.

9. Remove the replacement sensor from its plastic canister. Note that the CO-LO, CO-HI, SO2,

and NO2 sensors have a shorting-spring installed between two of their pins. Remove and discard this spring before installing the sensor.

10. Place the adhesive disk on the bottom of the new sen- sor and plug the new sen- sor into the sensor PCB.

11. Attach the gas cup to new sensor, making sure that when the sensor assembly is plugged into the 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.

6-8

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Bacharach 24-9448 manual Sensor Only Replacement
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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.
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