Testo Flue Gas NO Retrofit Sensor

This Testo NO retrofit sensor gives your flue gas analyser the capability to measure nitric oxide levels in exhaust. Essential for techs needing a complete picture of combustion efficiency and emissions, especially on larger commercial and industrial systems. I've been on plenty of jobs where an analyser upgrade like this saved us from needing a whole new unit.

It's precalibrated and designed for straightforward installation, meaning less downtime and more accurate data for compliance and diagnostics.

Best for: HVAC service techs, industrial combustion specialists, maintenance teams, and anyone using compatible Testo 340 or 350 series analysers.

Compatibility

This NO retrofit sensor is purpose-built for seamless integration with compatible Testo flue gas analysers. Specifically, it's designed to activate the NO measurement parameter in the:

• testo 340 - Combustion Analyzer for Commercial and Industrial Applications (0632 3340)
• testo 350 - Portable emission analyzer (0632 3510)
• testo 350 - Process Kit (400563 3511)

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

Features

• Enables NO measurement: Adds nitric oxide parameter to compatible Testo flue gas analysers.
• Self-installation: Designed for easy user insertion without specialist tools.
• Precalibrated: Ready to use out of the box, saving calibration time on site.
• Wide measuring range: Captures NO concentrations from 0 to 4000 ppm with 1 ppm resolution.
• Compact and lightweight: Weighs just 18 grams, keeping your analyser portable.

Technical Specifications

What's in the Box

• 1 x Testo NO retrofit sensor (0554 2150)

Using It on the Job

1. Power down: Ensure your Testo flue gas analyser is powered off and disconnected from any probes or power sources.
2. Locate sensor bay: Refer to your analyser's manual to find the correct sensor slot for NO.
3. Insert sensor: Carefully slide the precalibrated NO sensor into its designated slot until seated securely. It's usually a snug fit.
4. Power up and check: Turn on your analyser. The new NO measurement parameter should now be active and visible in the menu.
5. Zero point calibration: Conduct a fresh air zero point calibration as per your analyser's instructions before taking readings.

Limitations & Safety Notes

• Only compatible with specified Testo 340 and 350 series analysers.
• Handle sensors carefully; dropping them can affect calibration or cause damage.
• Ensure the analyser's software is up to date for optimal sensor recognition and performance.
• Nitric oxide measurement should be conducted by trained personnel familiar with combustion analysis.

When you're upgrading your analyser with new sensors, always check the manufacture date on the sensor itself. Even if it's new, a sensor sitting on a shelf for years might have a shorter lifespan once in service. Fresh is best for accurate, long-term data.

Pair With

Pair with your Testo flue gas analyser and a fresh set of particulate filters to maintain optimal flow and accuracy. You might also look at our range of temperature probes for complete combustion system diagnostics.