Testo · testo 51x
testo 51x - refrigeration sensor
The Basic Combi Refrigeration Sensor delivers fast and reliable leak detection for all common refrigerants when used with the testo 514 or testo 515 Ex.
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Testo · testo 515 Ex
testo 515 Ex - Combination leak detector - Gas
The testo 515 Ex offers fast, highly sensitive leak detection down to 1 g/a with response times under 2 seconds. Its flexible gooseneck enables safe measurements in hard‑to‑reach areas, while clear display modes with color and trend visualization support precise leak localization. Interchangeable sensors for flammable gases and refrigerants, combined with ATEX certification, make it a versatile and safe tool for demanding environments.
Category: Measuring instruments · Gas leak detectors
Specifications by model
| Methane (CH₄) | Value |
|---|---|
| Measuring span | 1 ppm to 1.0 %vol CH₄ |
| Resolution | 1 ppm / 0.1 Vol.% (> 999 ppm) |
| Propane (C₃H₈) | Value |
|---|---|
| Measuring span | 1 ppm to 1.0 %vol C₃H₈ |
| Resolution | 1 ppm / 0.1 Vol.% (> 999 ppm) |
| Butane (C₄H₁₀) | Value |
|---|---|
| Measuring span | 1 ppm to 1.0 %vol C₄H₁₀ |
| Resolution | 1 ppm / 0.1 Vol.% (> 999 ppm) |
| H₂ leak detection | Value |
|---|---|
| Measuring span | 1 ppm to 1.0 %vol H₂ |
| Resolution | 1 ppm / 0.1 Vol.% (> 999 ppm) |
| General technical data | Value |
|---|---|
| Operating humidity | 10 to 80 %RH |
| Weight | 291 g |
| Dimensions | 132 x 60 x 37 mm (LxWxH) |
| Operating temperature | -10 to +50 °C |
| Detection parameters | ppm; vol.%; %LEL |
| Response time | <2 sec |
| Gas | methane; propane; butane; hydrogen (forming gas) |
| Leak alarm | Optical and audible alarm; vibration |
| Sensor service life | 2 years under normal usage |
| Sensitivity | 1 g/a – High+; 14 g/a – Low; 3 g/a – High |
| Probe shaft length | 295 mm |
| Battery life | 8 h |
| Storage temperature | -20 to +60 °C |
| Ex protection | ATEX/UL/CSA 60079-0, UL/SA 60079-11, Zone 2 |
Full description
The testo 515 Ex combines fast and reliable performance with user-friendly design.
Leak rates down to 1 g/a can be detected, ensuring high sensitivity and long-term sensor stability.An advanced fan suction delivers response and recovery times of less than 2 seconds, enabling fast leak localization. The flexible gooseneck allows safe and reliable detection even in tight or difficult-to-access areas. Selectable display modes with color graph and trend curve visualization enable clear monitoring of leak progression and precise pinpoint detection. Interchangeable sensors enable 2-in-1 detection of refrigerants and flammable gases.
ATEX certification ensures safe and reliable operation in potentially explosive environments.
Key benefits:
• High sensitivity - Detects leak ratesdown to 1 g/a
• Fast - Advanced fan suction for rapid response and recovery time < 2sec
• Convenient - Leak detection via flexible and robust gooseneck
• Easy & reliable - Selectable colored display modes (numeric, bar graph, trend curve) for intuitive leak analysis
• 2-in-1 - Detection of refrigerants and flammable gases (with additional Refrigeration sensor)
Scope of delivery:
• Softcase
• Filters
• Protection cap
• 1x Gas sensor
• USB-C cable
Compatible accessories (2)
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Testo · testo 513
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