Fieldpiece Micron gauge MG44

The Fieldpiece Vacuumeter MG44 is a professional vacuum instrument developed to provide fast, accurate and reliable measurement of vacuum levels when installing and servicing refrigeration and heat pump systems. With wireless connectivity, high accuracy and robust construction, this vacuum meter is an indispensable tool for HVAC technicians.

Key features and benefits

• High precision: Accuracy of ±(5% of reading + 5 microns) at 25°C, in the range 50-2000 microns.
  
• Wide measurement range: 50-25,000 microns of mercury with several unit choices (µmHg, Pascal, mBar, mDry, Dry).
  
• Very high resolution: Down to 1 micron (below 2000 microns) for extreme accuracy.
  
• Wireless communication (2.4 GHz): Range up to 300 meters in line of sight for flexible use.
  
• User-friendly design: Automatic shutdown after 15 minutes of inactivity (adjustable APO).
  
• Waterproof: IP54 rating for safe work in the field.
  
• Long battery life: Up to 40 hours of operation with 2 x AA batteries.
  
• Compact and lightweight: Only 300g - easy to carry and use in tight spaces.
  
  

Technical specifications

• Connection: 1/4" SAE male connector
  
• Accuracy: ±(5% of reading + 5 microns) at 25°C (50-2000 microns)
  
• Measuring range and units:
  
• 50-25,000 microns mercury (English)
  
  
• 6-3333 Pascal (metric)
  
  
• 0.06-33.33 mBar (metric)
  
  
• 50-25 000 mTorr (metric)
  
  
• 0.05-25 Torr (metric, equivalent to mmHg)
  
  
• Best resolution:
  
• 1 micron mercury (below 2000 microns)
  
  
• 1 Pascal (below 250 Pa)
  
  
• 0.001 mBar (below 2.5 mBar)
  
  
• 1 mTorr (below 2000 mTorr)
  
  
• 0.001 Torr (below 2.5 Torr)
  
  
• Battery type: 2 x AA alkaline (NEDA 15A, JIS UM3, IEC LR6)
  
• Battery life: approx. 40 hours (alkaline)
  
• Automatic shutdown: 15 minutes (adjustable)
  
• Radio frequency: 2.4 GHz
  
• Wireless range: Up to 300 m in line of sight (shorter with obstacles)
  
• Protection class: IP54 (water and dust proof)
  
• Operating environment: -10°C to 50°C, <75% RH
  
• Storage temperature: -20°C to 60°C, <80% RH (with batteries removed)