Leybold PHOENIX MOBILIS Ultra Handheld Leak Detector | Thermal conductivity sensor, resistant to strong magnetic fields (usable with MRI running), 1 s response, 20 h battery, 447 g

Leybold PHOENIX MOBILIS Ultra Handheld Leak Detector: Magnetic-Field Resistant, One-Handed Operation

Overview

The PHOENIX MOBILIS Ultra is a Leybold handheld leak detector that detects leaks with a micro thermal conductivity sensor. It responds to almost all gases and gas mixtures, and the manufacturer notes that it is particularly accurate for ammonia, helium and hydrogen. The housing is resistant to strong magnetic fields, so it can be used continuously while an MRI is running. At power-on it automatically zeroes to ambient air, and leaks are indicated on a large backlit LCD with an audible alarm and flashing display. Readings can be stored in the unit, with selectable units of cc/sec, g/yr and mg/m³. The manufacturer's gas table also lists SF6 and various refrigerants for reference only; please ask before use with a specific gas.

Key Specifications

• Sensor: Micro thermal conductivity detector (MTCD)
• Factory calibration: 5000 ppm helium (±5%); leak 0.0005 cc/sec (±5%)
• Response and flow: Response time (T90) 1 s; sample flow 2 cc/s
• Alarm: ≥ 90 dBA (10 cm, 50% relative humidity, room temperature); flashing display
• Data logging: 10 days continuous
• Battery: Rechargeable lithium battery, approx. 20 h
• Environment and protection: Operating temperature 0–50 ℃; humidity 0–99% RH; IP44
• Dimensions and weight: Main unit approx. 320 × 80 × 55 mm, approx. 447 g; carrying case 420 × 340 × 97 mm
• Standard accessories: Carrying case, socket wrench, flexible probe, standard capillary probe, short capillary probe, standard nozzle, communication interface cable, USB cable

Applications

• Leak location in automotive manufacturing, refrigeration equipment and industrial processes.
• Leak checks during installation and maintenance in strong magnetic field environments such as MRI.

Specifications per the Leybold PHOENIX MOBILIS Ultra product page and e-catalog Technical data (part number 253010V02) (leybold.com, retrieved 2026-10-24).