- Key Features
Keeping your 'Eye' on the Purge!
The most advanced handy Weld Purge Monitor® is here, invented and developed with real science by HFT® in the 1970’s. Registered Trademarks in USA and Europe. The Argweld® PurgEye® 100 IP65 Sealed Dustproof and Waterproof Weld Purge Monitor® with innovative push button auto calibration, enlarged screen, low sensor indicator, tripod mount, sleep mode, vacuum sealed leak-tight probe assembly, wrist or neck strap, rubber housing protector and so much more.
Once again, manufacturers and innovators, HFT®, bring to the market place for the first time, a fully Accredited IP65 Standard Rated Weld Purge Monitor®. The PurgEye® 100 now has a dustproof and waterproof outer case that prevents the ingress of dust or moisture even to the extent of having hard water spray directed against it.
We launched the original PurgEye® 100 IP65 almost 2 years ago and this replaced our obsolete Argweld® Mark V (MKV) which used old out of date technology in comparison to this revolutionary PurgEye® 100 IP65 model.
With tungsten inert gas welding (gas tungsten arc welding) of important joints in stainless steels and other reactive metals, before commencing the weld, it is essential to know that the oxygen content in the welding volume has been reduced to a satisfactorily low level. Argweld® PurgEye® 100 IP65 Weld Purge Monitors® will carry out this task for you indicating oxygen levels down to 100 ppm. For full technical information, use the tabs above.
Our Weld Purge Monitors® have been specifically designed for excellent weld purging conditions creating the best oxide-free zero color welds. Oxygen monitors for welding purposes, including gas analysers (gas analyzers), oxygen instruments or oxygen indicators are not sufficient to provide good clean welds.
Technical Comparison of all Weld Purge Monitors®
Use this chart to find which model suits your requirements and to make an informed choice.
Return on Investment (ROI)
All Argweld® Pipe Weld Purging Systems and all PurgEye® Weld Purge Monitors® provide instant Return on Investment.
Way ahead in the field of Weld Purge Monitoring®
Argweld® PurgEye® 100 IP65 has additional features that place this Weld Purge Monitor® way ahead in the field of Weld Purge Monitoring.
Huntingdon Fusion Techniques HFT® is the first company to have developed a Weld Purge Monitor®. The Company has continued to innovate year by year bringing to the market place a complete family range of weld purge monitoring instruments for other materials including duplex, nickel and cobalt steels, titanium, zirconium and other reactive alloys.
Joining the other existing models in the range, the Argweld® PurgEye® 100 IP65 makes Huntingdon Fusion Techniques HFT® the only Company to have a complete 'family' of Weld Purge Monitors® s for all applications and to suit every budget.
This exciting new PurgEye® 100 IP65 Weld Purge Monitor® replaces our out of date and obsolete Argweld® Mark V (MKV) Weld Purge Monitor® which used old technology in comparison with this latest revoluntary model.
Hi-tech developments on the Argweld® PurgEye® 100 IP65 Weld Purge Monitor® include:
• IP65 dustproof and waterproof accredited
• Vacuum brazed leak tight probe assembly
• Push button "Auto Calibration" feature
• Low battery indicator and low sensor indicator
• Enlarged screen and large size digits
• Tripod mount (for fixed and gorilla tripods)
• Automatic sleep mode when not in use
• Leak tight quick connect/disconnect fittings for gas purge tubing
• Protective rubber cover (optional)
• More robust carry/presentation storage case
The innovative Push Button Auto Calibration facility on the front of the instrument allows the user to calibrate at atmospheric level and again at the lowest oxygen reading for increased accuracy.
With tungsten inert gas welding (gas tungsten arc welding) of important joints in stainless steels and other reactive metals, before commencing the weld, it is essential to know that the oxygen content in the welding volume has been reduced to a satisfactorily low level.
Argweld® PurgEye® 100 IP65 Weld Purge Monitors® s will carry out this task for you indicating oxygen levels down to 100 ppm.
Internationally recognised as the premier day to day Weld Purge Monitor®, the PurgEye® 100 IP65 has become the standard oxygen measuring instrument in the industry.
This very affordable hand held meter is a 'must' for every construction site and pipework fabrication facility around the world.
Acknowledged as the World's Standard Instrument
The updates to our standard Weld Purge Monitor® place the PurgEye® 100 IP65 instrument at the forefront of weld purge monitoring technology as a low cost hand held instrument. That is why it is acknowledged as the World's most standard instrument.
Auto Calibration Feature
Calibrate your own Argweld® PurgEye® 100 IP65 Weld Purge Monitor® at any time without having to return it to the factory and each time you weld to ensure that your readings are the most accurate.
The calibration facility even has the ability, at the touch of a small button to calibrate both at atmospheric levels of 20.94% and at 0.01% (100 ppm) level of oxygen.
Dustproof and Waterproof Accredited
Dustproof Standard Rated 6 Dust Tight (no ingress of dust) and Waterproof Standard Rated 5 Protected against water jets (water projected from a nozzle against the enclosure from any direction shall have no harmful effect).
Vacuum Brazed Stainless Steel Probe Assembly
Leak tight 'one piece' sealed assembly prevents any leaks.
Low Sensor Indicator
You will never be with an unusable monitor! The low sensor level signal in the Argweld® PurgEye® 100 IP65 Weld Purge Monitor® gives plenty of warning time to obtain a new sensor which you can simply fit yourself.
Low Battery Indicator
The PurgEye® 100 IP65 Weld Purge Monitor® has a low battery indicator that appears in the corner of the screen. This was a feature we designed for the first time in our earlier model, our obsolete Mark V (MKV) meter which used old technology in comparison to this revolutionary latest PurgEye® 100 IP65 model.
Enlarged Easy to Read Digital Screen
Easy to read digital screen shows the operator when it is safe to start welding ensuring a perfect welding environment for a clean weld. The new enlarged screen uses 24 mm size digits for easy viewing at longer distances from the work station. These digits are approximately 41% larger than our previous out of date model, the Mark V (MKV), which is now obsolete.
A rugged tripod mount has been integrated into the housing. This allows the Argweld® PurgEye® 100 IP65 Weld Purge Monitor® to be firmly mounted on a tripod of your choice. With mounting the instrument on a tripod, easy visual observation is provided so you can see the Argweld® PurgEye® 100 IP65 Weld Purge Monitor® from any part of the working space.
A range of tripods or other fixing devices is available on which you can mount and station your Argweld® PurgEye® 100 IP65.
Automatic Sleep Mode
When Argweld® PurgEye® 100 IP65 Weld Purge Monitor® registers more than 20% oxygen for periods longer than 1 hour, it will automatically switch off to conserve battery life.
More Robust Presentation Carrying Storage Case
Ergonomically designed case with double sided preformed cut outs, give a safe location of each part of your PurgEye® instrument.
Auto Safety Break Wrist or Neck Carry Strap
Quality lanyard fitted with a standard auto safety break feature.
After connecting the PurgEye® 100 IP65 to the purge gas exhaust, you will have immediate readings showing reduction of oxygen down to your desired level.
The PurgEye® 100 IP65 Weld Purge Monitor® indicates oxygen levels from 20.94% down to 100 ppm, so use a PurgEye® Weld Purge Monitor® everytime for guaranteed accuracy of oxygen indication to allow a weld start with minimal risk of oxidation.
Most Advanced Calibration and Accuracy
The Argweld® PurgEye® 100 IP65 Weld Purge Monitor® is shipped in an attractive, robust carry, presentation and storage case to maintain the instrument in good condition and to keep it together with all accessories.
Argweld® PurgEye® 100 IP65 Weld Purge Monitors® can be used with any pipe welding system or any weld purging chamber or weld purging enclosure.
The sensor is easy to replace and calibrate yourself using the advanced calibration features of the Argweld® PurgEye® 100 IP65 and the specially written algorithm that provides extreme accuracy at 0% where it is especially important for weld purging.
Argweld® PurgEye® 100 IP65 Weld Purge Monitors® can be used as a continuously reading instrument with free flow of the purge exhaust gas across the sensor or as a sampling instrument with the hand vacuum pump extracting samples from the purged volume, as and when desired.
2 x AA batteries
Leak tight stainless steel probe for sampling
2 meters of gas sampling hose
Sampling bulb (vacuum pump)
Carry strap for neck or wrist
User instruction booklet
Storage and presentation case
Calibration certificate for the purpose of Quality Control Procedures and Management Systems
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Accuracy Range
|Measuring Range:||20.94% down to 100 ppm oxygen
(100 ppm to atmosphere)
|Size:||94 mm (top width)
58.5 mm (handle width)
199 mm high (from bottom to top of eyelet)
63 mm deep (with flow adaptor)
44 mm deep (without flow adaptor)
|Power:||Battery type 2 x AA (included)|
|Scale:||LCD (Liquid crystal display) 24 mm
(Old Argweld® Weld Purge Monitor® Mark V Model 17 mm)
|Weight kg||0.870 kg|
Increase Weld Purge Monitor® Sensor Life Significantly
The PurgEye® 100 IP65 Weld Purge Monitor® has a unique sensor, which measures the precise oxygen level being drawn across it.
A sealed sensor is provided with the PurgEye® 100 and replacement sensors are available individually.
You may have noticed that your spare or replacement PurgEye® 100 sensors are being shipped in new packaging. The packaging is a way to increase the sensor life significantly.
The sensors are packaged inside a small, sealed compartment to prevent oxygen from entering, keeping it inert until the package is opened for use. Once a tiny amount of oxygen inside the sealed volume has been consumed, a partial vacuum has been created leaving the residual atmospheric nitrogen behind that protects the sensor.
The new packing of the PurgEye® 100 sensors ensures the average life is raised close to 20 months or more.
PurgEye® 100 Weld Purge Monitor® not only have a "low sensor" warning signal, which normal oxygen monitors do not have, but there is now a guarantee that when your replacement sensor arrives that it will last much longer than any other oxygen monitors.
Spare sensors are sold as a single unit or as multiples subject to preference.
In addition to increased life, this new sensor packaging affords an extra degree of protection to the special contacts and the sealing membrane on top.
The packaging will protect the sensor from scuffs and damage during transit and will keep it clean during storage.
Other sensors in the industry have a low long life. They start to deplete immediately after manufacture. It can then take many months before they are put into use. The average life of most other sensors is then a short 10 – 12 months.
Our PurgEye® 100 unique sensors with this unique packaging give a much longer life of 20 months or more.
HFT® are constantly considering the needs of the customer. By using our scientific knowledge and background, we are able to develop and innovate new ideas to ensure and help the customer save money, always.
The old MKV sensors are still available as replacements. These sensors are not sent in sealed packs as they have a plastic cap to stop oxygen damaging the sensor. Take a look at our PurgEye® 100 exchange scheme and trade in your old MKV monitor for a great price.
Argweld® PurgEye® 100 Weld Purge Monitors
See what our users have to say...
I am a huge fan of the Huntingdon products and have talked others over the years into using them. The purge meters are second to none. I own and use regularly my PurgEye 100 and my PurgEye 300. In fact I think somewhere I still have my original Argweld® MKV monitor which sadly no longer powers up.
I am a very rare breed because as well as having 3 degrees and a complete academic understanding of metallurgy, but more importantly welding science, I also have over 20 years hands on experience of welding on drill floors, firing lines and vessel shops. I quite literally have a passion for old fashioned welding!
Excellent product guys!
City College AND Senior Welding Engineer at TransWeld Services Ltd
The project was the CF Fertilisers Ammonia 4 2016 TAR.
Part of this project was the removal and refit of 16 Inconel 800 Reformer cones these being 6” in diameter and 1” thick. We used your PurgEye system including the flow gates and heat resistant socks in addition we also used you purgeye flowmeters.
We had to use these as we had restricted access due to a bafle plate assembly on the internal of the cones so your system was spot on for our requirements.
We put it up on our wall right away and our sales staff are trying to get our distributers to do the same thing.
The CF site is based in Billingham Teesside.
I believe the PurgEye to be one of the best if not the best residual oxygen detector instruments on the market with its digital residual oxygen level LED display readouts measuring as low as 0.01 % and its large user friendly veiwing screen making it easier for me to read. I also believe the PurgEye to have a great accuracy of residual oxygen with speedy measurement's being displayed with in seconds. The PurgEye is a far cry from the old school home made "use a cigarette lighter" to check purge gas flow system.
Construction and Maintenance
Piping Solutions Pty Ltd, Australia
I like the PurgEye and I do not even work for HFT. In fact I like all their Purging gear.
I can personally vouch for purge monitors. When working with medium to large diameter exotic pipework. I can personally vouch for purge monitors. When working with medium to large diameter exotic pipework, they can prevent you from having a very bad day! I've only ever used the older model and it was a godsend - Anyone, from the welder who has had to carry out weld repairs due to root weld oxidisation (or coking) on such materials, to the directors facing an expensive bill for re-work and possible tarnished company reputation, to the client with their project now running behind schedule - know exactly what I mean. Purge monitors are a necessity.
Welding and Fabrication Instructor/Assessor at ITCA Ltd
We are still using your purge monitors twice a week on our five automatic tackles dome welding machines for calibration purposes. I have to say that they are highly reliable and robust. If we need more or replacements we know where to go.
I have used the model PurgEye 100, and it is valid, very valid, it is valid Titanium too.
Juan Martin Romero Perez
Frequently Asked Questions
1.0 What is the intended application for the Argweld® PurgEye® 100 IP65 Weld Purge Monitor® ?
This instrument is primarily for measuring oxygen levels down to 100 parts per million (ppm) when welding stainless steels and other reactive metals to prevent oxidation and discoloration. For accurate measurements below this, other PurgEye® monitors are available to measure accurately down to 10 ppm.
2.0 Is the Argweld® PurgEye® 100 IP65 good enough for stainless steel welding?
Weld Purge Monitors® manufactured and designed by Huntingdon Fusion Techniques HFT® have become the worlds’ standard for measuring purge gas quality in TIG/GTAW and Plasma/PAW welding of tubes, pipes, tanks and other enclosed structures.
The PurgEye® 100 IP65 detects oxygen levels down to 100 ppm and offers assurance that there are no leaks or that there is no outgassing to cause oxygen to remain in the vicinity of a weld.
3.0 Why should I use a Weld Purge Monitor® ?
Materials such as stainless steels and reactive alloys can oxidise and discolour when welded in the presence of oxygen.
The PurgEye® 100 IP65 will measure oxygen levels progressively as they are reduced by weld purging techniques so that welding can commence once the risk of oxidation and discolouration has been minimised.
4.0 What sort of sensor is used in the Argweld® PurgEye® 100 IP65?
A specialised and innovative solid state, self-calibrating design.
5.0 How can lower oxygen levels be measured?
HFT® manufactures a Range of Weld Purge Monitors® that are capable of measuring oxygen levels down to 10 ppm.
6.0 My Company needs a Calibration Certificate once a year for all instruments. How do I obtain one?
The new PurgEye® 100 IP65 monitor has an auto push-button facility that calibrates the sensor at both atmospheric and minimum oxygen levels.
This feature allows the sensor to be highly accurately calibrated for each reading throughout the life of the sensor. In the event that formal certification is nevertheless required,
HFT® has calibration centres around the world.
For the fastest and most economic method to obtain a new certificate, please contact us or your local HFT® distributor.
7.0 I need to detect oxygen level in pipes pre-heated to 300ºC (575ºF). Can I use the Argweld® PurgEye® 100 IP65 under these conditions?
The Argweld® PurgEye® 100 IP65 Weld Purge Monitor® should not be exposed to gas at a temperature above 50ºC (122ºF).
8.0 Can Weld Purge Monitors® only be used when purging with argon?
The PurgEye® monitors can measure the oxygen level within any gas, not only inert gases. They can be used to monitor the oxygen level when using inert gases such as argon and helium and also other welding gases such as nitrogen and nitrogen/hydrogen mixes.
Shipping Information, Weights and Dimensions
European Customs Tariff: 9026 1089
International Customs Tariff: 9026 80 6000
United States Customs Tariff: 9026 80 6000
Canada Customs Tariff: 9026 80 6000
Product Codes and Sizes
Argweld® PurgEye® 100 IP65 Weld Purge Monitors® are held in stock and available for immediate delivery.
Model Part Number API0100
Dimensions with carrying storage case 290 x 265 x 120 mm
Nett weight 0.870 kg
Gross weight 1.1 kg
Volumetric weight 1.42 kg
Instrument weight 0.210 kg instrument only (excluding carry case)
2 x AA batteries
Leak tight steel probe for sampling
2 meters of gas sampling hose
Carry strap for neck or wrist
Calibration and test certificate
User instruction booklet
Sturdy protective storage carrying and presentation case
Accessories, Spares and Replacements
Sensor Removal Tool
Rubber Protective Cover
Items available as 'Downloads'
Leaflets and general sales material are available to everyone visiting our website.
Restricted access items are shown at the end of this Download section.
Special Note: The items below are restricted and only available in our Secure Login section. This is mainly for the protection of our Exclusive Distributor network.
Should you wish to receive an item mentioned below which is not active as a 'download' link on this page, please contact us or your nearest Distributor.
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® User Instructions Technical Manual
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Certificate of Conformity
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Material Safety Data Sheet MSDS
Arwgeld® PurgEye® 100 IP65 Weld Purge Monitor® Material Safety Data Sheet MSDS EU Battery Directive
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Technical Notes
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Price List
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Price List Spares and Accessories
Argweld® PurgEye® 100 IP65 Weld Purge Monitor® Price List Exchange Replacement Scheme