Testo CO Replacement Sensor

This Testo 0390 0088 CO Replacement Sensor is your go-to for keeping Testo 350 combustion analysers dialled in. It helps HVAC and combustion technicians maintain accurate carbon monoxide readings, which is crucial for safety and efficiency on the job.

Keeping your combustion analyser performing spot-on is key when you're on a service call, especially with modern appliance efficiencies. There's nothing worse than getting an inaccurate reading that wastes your time and leads to callbacks.

Best For

• HVAC and refrigeration technicians performing combustion analysis.
• Service and maintenance teams for industrial and commercial burners.
• Anyone looking to replace a worn or faulty CO sensor in their Testo 350 analyser.

Compatibility

This CO sensor is specifically designed for use with Testo 350 combustion analysers. It features H2 compensation, ensuring more accurate readings even when hydrogen is present in the flue gas. This is a direct replacement part engineered to integrate seamlessly with your Testo 350 unit.

Features

• H2 Compensated: Provides more reliable CO readings by accounting for the presence of hydrogen.
• Wide Measurement Range: Capable of measuring carbon monoxide from 0 to 10,000 ppm.
• Direct Replacement: Engineered as an exact fit for Testo 350 series analysers.
• Ensures Accuracy: Restores your analyser's capability to deliver precise combustion gas measurements.

Technical Specifications

What's in the Box

• 1 x Testo 0390 0088 CO Replacement Sensor, 0-10000 ppm

Using It on the Job

1. Ensure your Testo 350 analyser is powered off and allowed to cool completely before opening.
2. Carefully access the sensor compartment according to your analyser's manual.
3. Disconnect and remove the old CO sensor, noting its orientation.
4. Install the new Testo 0390 0088 sensor, making sure it seats correctly and connections are secure.
5. Reassemble the analyser and power it on.
6. Perform a zeroing and calibration procedure on the Testo 350 analyser as per Testo's instructions to ensure optimal performance.

Limitations & Safety Notes

• This sensor is exclusively for Testo 350 series combustion analysers. It will not work with other models.
• Sensor replacement should be performed by a competent technician familiar with Testo equipment maintenance.
• Always follow the manufacturer's specific instructions for sensor installation and analyser calibration.
• Carbon monoxide is a dangerous gas. Regular testing and accurate equipment are vital for safety; do not use an uncalibrated analyser for critical measurements.
• This product meets typical trade expectations for this class of tool. Follow Australian standards and Safe Work guidance when performing combustion analysis.

Tradie Pro Tip

Don't skip the calibration after swapping out a sensor. A fresh sensor needs to be zeroed and ranged correctly to give you reliable CO readings. It's not just about compliance, it's about keeping people safe.

Pair With

Pair this replacement sensor with your Testo 350 combustion analyser and a suitable flue gas probe for comprehensive combustion diagnostics. Consider also having calibration gases on hand to ensure your analyser is always giving accurate readings.