Handheld helium sniffer for effective use within a high magnetic field during MRI scanner maintenance
Gas Leak Detector for use in high magnetic field environments such as MRI

Handheld helium sniffer for effective use within a high magnetic field during MRI scanner maintenance.
Easy to Carry and Simple Operation
With a portable design, you can detect gas leaks easily. Simply place the probe near the detection area for instant confirmation of any leaks.
Capable of Detecting Various Gases
Not only can it detect gases with a significant difference in thermal conductivity from air, such as helium and carbon dioxide, but it can also detect nitrogen, which has a smaller difference and is more difficult to detect.
Dual Power Supply Design
In addition to standard battery operation, continuous operation via USB-C power supply is also possible. Even when the batteries run out, you can use it while supplying power from a PC’s USB port or a mobile battery.
Note 1: USB cable is not included.
Note 2: USB power supply does not support charging functionality.
Easy to Carry and Simple Operation
With a portable design, you can detect gas leaks easily. Simply place the probe near the detection area for instant confirmation of any leaks.
Capable of Detecting Various Gases
Not only can it detect gases with a significant difference in thermal conductivity from air, such as helium and carbon dioxide, but it can also detect nitrogen, which has a smaller difference and is more difficult to detect.
Dual Power Supply Design
In addition to standard battery operation, continuous operation via USB-C power supply is also possible. Even when the batteries run out, you can use it while supplying power from a PC’s USB port or a mobile battery.
Note 1: USB cable is not included.
Note 2: USB power supply does not support charging functionality.
- Detectable Gases: Helium, Hydrogen, CarbonDioxide, Argon, Neon, Nitrogen
- Audible and visual alerts.
- Colour LCD Display.
- Highly Sensitive - 0.0005 ml/min (He).
- Works inside MRI environment
- No vacuum system, no calibration gas setup
- Immediate sniffing at:
Cryostat joints
Helium lines
Cold head interfaces
Key Technical Features
- Thermal conductivity (TC) detection
- Helium sensitivity down to 0.0005 mL/min
- Battery-operated handheld design
- No vacuum system required
- Lightweight (about 250 g)
- No magnetic interference
- Real-time sniffing response
- Fully portable MRI room use
- Immediate operation
- Service-friendly ergonomics
Specifications:
| Detection: | Thermal conductivity |
| Target gases: | Helium, Hydrogen, CO2, Argon, Nitrogen, Neon and other non-corrosive gases. |
| Sensitivity: | Standard range - minimum 0.005 ml/min (He) High range - minimum 0.0005 ml/min (He) |
| RoHS: | Compliant |
Part Number:
2702-19360 LD249-B gas leak detector
Spare Parts:
2702-19333 LD249 Sample Filter
2702-19334 LD249 Reference Filter