Testo SO2 Replacement Sensor

This Testo SO2 replacement sensor is designed to keep your Testo 335 or 350 combustion analyser running true. It's crucial for any tech who needs accurate sulphur dioxide readings for compliance or efficiency checks.

Maintaining your analyser with fresh sensors ensures you're always getting reliable data, especially when you're troubleshooting tricky combustion issues on commercial boilers or industrial furnaces. You don't want to be second-guessing a reading when a client's plant is on the line.

Best For

• HVAC and refrigeration technicians
• Industrial plant maintenance crews
• Emissions testing specialists

Compatibility

This SO2 sensor is specifically built for direct integration with the Testo 335 and Testo 350 combustion and emission analysers.

It's designed to replace existing sulphur dioxide sensors within these models, ensuring seamless functionality and accurate measurement in the 0-5000 ppm range.

If you're running a different model, check fittings and specs before ordering.

Features

• Direct fit for Testo 335 and 350 analysers, making replacement straightforward.
• Measures sulphur dioxide (SO2) concentration up to 5000 ppm.
• Helps maintain the accuracy required for emission compliance and system optimisation.
• Ensures continued reliable performance of your Testo analyser.

Technical Specifications

What's in the Box

• One Testo 0390 0081 SO2 Replacement Sensor, 0-5000 ppm

Using It on the Job

1. Power down your Testo 335 or 350 analyser completely and disconnect it from any active systems.
2. Refer to your analyser's manual for specific instructions on accessing and removing the old SO2 sensor.
3. Carefully install the new Testo 0390 0081 sensor, ensuring it seats correctly in its bay.
4. Power up your analyser and perform any necessary calibration or zeroing procedures as per the manufacturer's guidelines to confirm accurate operation.
5. After installation, always conduct a system check to ensure the analyser is reading correctly before performing critical measurements.

Limitations & Safety Notes

• Only compatible with Testo 335 and Testo 350 analysers.
• Installation should be performed in a clean, dry environment, following manufacturer's guidelines.
• Exposure to high concentrations of SO2 can be hazardous; ensure adequate ventilation when working with emission sources.
• Always follow Australian standards and Safe Work guidance when performing combustion or emission analysis.

Tradie Pro Tip

When swapping out gas sensors, it's a good habit to check the expiration date on the new sensor if it has one. Also, give your analyser a full zeroing and calibration run after any sensor replacement. It locks in the accuracy and keeps you out of trouble with dodgy readings.

Pair With

Pair with other Testo replacement sensors or a new Testo 335 or 350 analyser for complete emission monitoring solutions. Also check out our range of flue gas probes.