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 and Refrigeration
The testo 515 Ex provides fast, precise leak detection down to 1 g/a with response times under 2 seconds. Its flexible gooseneck ensures safe measurements in tight spaces, while color and trend displays support accurate pinpointing. With interchangeable sensors for refrigerants and flammable gases and ATEX certification, it delivers reliable performance in demanding, hazardous 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) |
| Detectable | HCFC, HFC, HFO,HCFO, HC (R290), and blends |
| Leak alarm | Optical and audible alarm; vibration |
| Sensor service life | 2 years under normal usage |
| Sensitivity | 3 g/a – High; 14 g/a – Low; 1 g/a – High+ |
| Probe shaft length | 295 mm |
| EU/EC directives | 2014/34/EU (ATEX) |
| Battery life | Up to 10 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 rates down 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
Scope of delivery:
• Softcase
• Filters
• Protection cap
• 1x Gas sensor
• 1x Refrigerant sensor
• USB-C cable
Compatible accessories (2)
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