Testo 512-2 Digital Differential Pressure Meter

The Testo 512-2 digital differential pressure meter is your go-to for precise checks on gas flow and static pressure in heating systems, or for monitoring filters in air conditioning units.

This compact tool, combined with the Testo Smart App, streamlines your workflow, letting you configure, log, and report readings straight from your phone – saving time when you're on a dusty rooftop or squeezed into a plant room.

Best For

• Gas appliance technicians
• HVAC service teams
• Air conditioning filter maintenance
• Plumbers working on gas systems

Compatibility

This meter is built for various HVAC and gas system applications. It measures differential pressures up to 800 inH2O (2000 hPa), making it suitable for gas flow pressure, static gas pressure on burners, and filter monitoring on air conditioning systems.

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

Features

• Accurate differential pressure measurement up to 800 inH2O (2000 hPa) for heating and AC systems.
• Seamless integration with the Testo Smart App for setup, live data display, logging, and reporting.
• Audible alarm to alert you when set limit values are exceeded during measurement.
• Calculates timed and point mean values for comprehensive analysis.
• Position-independent sensor ensures reliable and consistent readings in various orientations.

Technical Specifications

What's in the Box

• Testo 512-2 differential pressure measuring instrument
• Transport bag
• Silicone connection hose
• Test protocol
• 3 x AA batteries

Using It on the Job

1. Install the included 3x AA batteries and power on the Testo 512-2.
2. Connect the silicone hose to the pressure ports on the meter and the system you're testing (e.g., gas manifold or across an AC filter).
3. For advanced functions, download the Testo Smart App and connect via Bluetooth. Use the app to configure settings and set alarm limits.
4. Take your differential pressure readings. For gas systems, ensure compliance with local gas regulations and safety standards.
5. Log measurements in the app, generate reports, and email directly from the job site for easy documentation.
6. After use, disconnect the hoses, power off the instrument, and store it safely in the transport bag to protect it from site damage.

Limitations & Safety Notes

• Ensure all pressure lines are clear and properly connected to avoid false readings or leaks.
• The IP40 rating means it's protected from solid objects over 1mm but not against water spray; avoid wet conditions.
• Always refer to manufacturer specifications for the equipment you are testing to ensure pressure compatibility.
• Do not exceed the overload pressure of ±2500 inH2O (±2500 hPa) to prevent instrument damage.
• For any work involving gas systems, ensure you hold the appropriate Australian licences and follow all safety protocols.

Tradie Pro Tip

"When checking static gas pressure on burners, always do a quick zero adjustment before connecting. This ensures accuracy and saves you double-checking your work when things don't quite add up."

Pair With

Pair this differential pressure meter with other Testo Smart Probes for comprehensive system diagnostics or with a quality gas leak detector for a complete gas safety toolkit.