Technical Comparison of all Weld Purge Monitors®

Summary of the main features of each instrument to help you make a technical comparison to choose the best Weld Purge Monitor®, invented by HFT® in the 1970’s, for your application.  Registered Trademarks in USA and Europe. Note that the Argweld® Mark V (MKV) does not feature as this meter is now very much out of date and this old technology has been replaced by the latest 'most popular' state of the art instrument, the PurgEye® 100 IP65 Weld Purge Monitor®.

FEATURE PurgEye®
100
IP65
PurgEye®
200 IP65
Rechargeable
PurgEye®
300
Nano
PurgEye®
300
Freeflow
PurgEye®
500
Integral Pump
PurgEye®
600
Touch Screen
PurgEye®
1000
Remote
IP65 Accredited To be advised          
Instant Push Button Auto Calibration            
Hand Held          
Bench Mount              
Tripod Mount (for Fixed or Gorilla)              
Low Battery and Low Sensor Indicators          
Enlarged Easy to Read Screen
Presentation Storage Carrying Case included
Leaktight Connects / Disconnects
Starting Measuring Range Atmosphere 1,000 ppm 1,000 ppm 1,000 ppm 1,000 ppm Atmosphere 1,000 ppm
Lowest Measuring Range 100 ppm 10 ppm 10 ppm 10 ppm 10 ppm 10 ppm 10 ppm
Percentage Optimum Reading 0.01% 0.001% 0.001% 0.001% 0.001% 0.001% 0.001%
Automatic Fault Finding Diagnostics        
PurgeLog™ Software to Download Data for Quality Control Records       Included Included Included  
Internal Alarm and Security PIN Code Facility        
Weld Start / Stop Facility        
Readings as Percentage % or Parts per Million (ppm) % % and ppm % and ppm % and ppm % and ppm % and ppm % and ppm
Internal Sampling Pump * with Gas Filtration      
User Port with 2 Outputs to Control Weld Equipment or Alarm for changing O2 Levels          √  
Computerised Colour 3.2" Touch Screen            
Real Time Clock to Date Stamp Quality Control Records            
USB Accessory Port to support easy transfer of Data Logging and Weld Certification            
Suitable for metals Stainless /
Duplex Steels
Stainless Steels, Duplex Steels, Titanium and Zirconium Alloys
Vacuum Brazed Leak Tight Stainless Steel Probe Assembly and Sampling Pump √   Electro
mechanical
internal pump
 Optional  Electro
mechanical
internal pump
 Electro
mechanical
internal pump
Electro
mechanical
internal pump
Electro
mechanical
internal pump
Sensor Lifespan and 
Replacement Time
c.18 Mths  Indefinite
Lifespan 
Indefinite
Lifespan 
Indefinite
Lifespan 
Indefinite
Lifespan 
Indefinite
Lifespan 
Indefinite
Lifespan 



Compare all Weld Purge Monitors® in the PurgEye® Family Range