Testo 350 Portable Emission Analyzer

The Testo 350 is a serious bit of kit for anyone needing to get accurate industrial emission readings on the fly. It's built tough for those demanding sites, letting you dial in precise data from industrial motors, burners, and turbines.

After years of seeing basic sniffers struggle with dirty combustion, a rugged, configurable unit like this is a game-changer for tuning efficiency and staying compliant, especially under Australian industrial conditions.

Best For

• Industrial HVAC technicians and combustion engineers
• Power generation and process control teams
• Environmental compliance officers
• Plant maintenance and commissioning crews

Compatibility

The Testo 350 Analysis Box comes standard with an O₂ sensor and can be freely configured with up to five additional gas sensors. It supports measurement of CO, NO, NO₂, SO₂, H₂S, CₓHᵧ, and CO₂. This analyser is designed for a broad range of industrial emission measurements including:

• Industrial motors
• Burners
• Gas turbines
• Thermo processes

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

Features

• Configurable Gas Sensors: Equip the Analysis Box with up to 6 sensors, allowing custom setups for specific industrial emission tests (O₂ standard, up to 5 optional for CO, NO, NO₂, SO₂, H₂S, CₓHᵧ, CO₂).
• Increased Measurement Range: The automatic 'thinning' function allows for unlimited measurements even with unexpectedly high gas concentrations, preventing sensor overload.
• Rugged & Serviceable Design: Features a sealed housing with built-in impact protection for harsh industrial environments, plus easy user access to replaceable gas sensors and wearing parts like pumps and filters.
• Flexible Control Options: Operate the Analysis Box remotely via the separate Control Unit (Bluetooth or data bus cable), or connect directly to a PC/notebook via USB or Bluetooth® 2.0 with easyEmission software.
• Multi-Unit Capability: Connect multiple Analysis Boxes (up to 16 total) via the Testo BUS for complex process understanding and real-time data graphing of parameters like NOx or CO.

Technical Specifications

What's in the Box

• Testo 350 Analysis Box (includes O₂ sensor and differential pressure sensor)
• Type K NiCr-Ni temperature sensor port
• Type S Pt10Rh-Pt temperature sensor port
• Testo data bus port
• Rechargeable battery
• Built-in combustion air sensor (NTC)
• Trigger port
• Data memory
• Carrying strap set (for Control Unit and Analysis Box - Note: Control Unit not included)
• USB interface
• Calibration certificate

Using It on the Job

1. Initial Setup: Power up the Analysis Box and ensure any optional gas sensors are correctly installed and calibrated. Charge the rechargeable battery fully before extended field use.
2. Probe Connection: Attach the appropriate flue gas probe (not included) to the Analysis Box. Use care to ensure a tight, leak-free seal.
3. System Integration: Connect the separate Control Unit (if using) via Bluetooth or data bus, or link to a PC/notebook using USB or Bluetooth® 2.0.
4. Measurement Configuration: Select the relevant application (burner, gas turbine, motor, or user-defined) on the Control Unit or via software. Allow the sensors to stabilise.
5. Sample & Analyse: Insert the probe into the flue gas duct or exhaust. The increased measurement range will automatically compensate for high gas concentrations. Monitor readings and log data as required.
6. Post-Measurement: Remove the probe, allow the system to purge, and store the Analysis Box in its carrying strap set. Regular cleaning of filters and checking of wearing parts will extend service life.

Limitations & Safety Notes

• The Control Unit and additional gas sensors are sold separately and are required for full functionality beyond basic O₂ and differential pressure readings.
• Always follow manufacturer guidelines for probe insertion depth and sampling duration to ensure representative readings.
• Wear appropriate Personal Protective Equipment (PPE) when working around hot flues or hazardous exhaust gases.
• Ensure proper ventilation when taking readings, especially in confined spaces.
• Regularly inspect and replace filters and other wearing parts to maintain measurement accuracy and prevent damage to internal components.

Don't skimp on spare filters and an extra hose extension. When you're on a big industrial site, you often need to run a probe further than expected, and clogged filters can ruin a reading fast. Keep a few spares in the truck.

Pair With

Boost your analyser kit with a Testo 350 Control Unit for full remote operation, and explore our range of flue gas probes and pitot tubes to match your specific industrial application. Don't forget spare particle filters for uninterrupted work.