testo 515 Ex – Combined Leak Detector for Refrigerants and Combustible Gases
The testo 515 Ex is a combined leak detector for refrigerants and combustible gases with ATEX approval. It combines fast, reliable detection performance with a user-friendly design, making it suitable for demanding industrial applications and potentially explosive atmospheres.
Leak rates as low as 1 g/year can be detected, ensuring high sensitivity and long-term sensor stability. Advanced fan-assisted sampling provides response and recovery times of less than 2 seconds, enabling rapid and efficient leak localization.
The flexible gooseneck probe ensures safe and reliable leak detection, even in confined or difficult-to-access areas. Selectable display modes featuring color charts and trend graphs provide clear visualization of leak intensity and enable highly precise leak localization.
Interchangeable sensors provide versatile 2-in-1 detection capabilities for refrigerants and combustible gases. ATEX certification allows safe and reliable operation in potentially explosive atmospheres (Zone 2).
Key Features and Benefits
- Combined leak detector for refrigerants and combustible gases
- ATEX approval for potentially explosive atmospheres (Zone 2)
- High sensitivity with leak detection down to 1 g/year
- Fast response and recovery times of less than 2 seconds
- Advanced fan-assisted sampling technology
- Flexible gooseneck probe for hard-to-reach measuring points
- Selectable color chart and trend graph displays
- Precise leak localization and clear visualization of leak intensity
- Interchangeable gas and refrigerant sensors
- Reliable performance in demanding industrial environments
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | testo |
| Model | testo 515 Ex |
| Device type | Combined leak detector for refrigerants and combustible gases |
| Minimum detectable leak rate | 1 g/year |
| Response time | Less than 2 seconds |
| Recovery time | Less than 2 seconds |
| Sampling method | Fan-assisted sampling |
| Probe | Flexible gooseneck |
| Display modes | Color chart and trend graph |
| Sensor system | Interchangeable sensors for refrigerants and combustible gases |
| Explosion protection | ATEX approval, Zone 2 |
| Methane (CH₄) measuring range | 1 ppm to 1.0 vol. % CH₄ |
| Methane (CH₄) resolution | 1 ppm / 0.1 vol. % (> 999 ppm) |
| Propane (C₃H₈) measuring range | 1 ppm to 1.0 vol. % C₃H₈ |
| Propane (C₃H₈) resolution | 1 ppm / 0.1 vol. % (> 999 ppm) |
| Butane (C₄H₁₀) measuring range | 1 ppm to 1.0 vol. % C₄H₁₀ |
| Butane (C₄H₁₀) resolution | 1 ppm / 0.1 vol. % (> 999 ppm) |
Typical Applications
- Leak detection in refrigeration and air conditioning systems
- Detection of combustible gas leaks
- Inspection of gas pipes, fittings, and connections
- Leak localization in confined and hard-to-reach areas
- Maintenance and servicing of industrial installations
- Leak detection in potentially explosive atmospheres (Zone 2)
Scope of Delivery
- Soft case
- Filter
- Protective cap
- 1 x gas sensor
- 1 x refrigerant sensor
- USB-C cable
Summary
The testo 515 Ex combines highly sensitive refrigerant and combustible gas leak detection in one versatile instrument. With interchangeable sensors, rapid response times, a flexible gooseneck probe, and ATEX approval for Zone 2, it provides an efficient and reliable solution for professional leak detection in industrial and hazardous environments.

Datasheet











