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An accurate 'Eye' on your Money!
The World's 'first and only' super low cost, basic, no frills Weld Purge Monitor® instrument measuring accurately down to 10 ppm....! Weld Purge Monitor® invented by HFT® in the 1970’s. Registered Trademarks in USA and Europe
'New' unique long life sensor, virtually no maintenance, no switching, no recording, no 'wet cell', no need to constantly calibrate, integrally mounted sensor, large alpha numeric display, small and lightweight, this ultra low cost instrument accurately measures down 10 parts per million.
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.
PurgEye® is a 'Family' Series of Weld Purge Monitors®.
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.
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Read MorePurpose-designed Purge Monitor
The Argweld® PurgEye® 300 Nano Weld Purge Monitor® has been specifically designed as a very low cost, basic entry level version of the Argweld® PurgEye® 300 for indicating low oxygen levels in inert gas for weld purging down to 10 ppm.
With a large alpha-numeric display, the Argweld® PurgEye® 300 'Nano' measures very accurately from 1000 ppm down to 10 ppm.
The Argweld® PurgEye® 300 'Nano' uses a unique new low cost long life sensor which has very little maintenance requirement and avoids the disadvantages of monitors with 'wet cell' technology that have to be constantly calibrated and have sensors replaced.
Argweld® PurgEye® 300 Nano Weld Purge Monitors® are available for immediate delivery.
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Read MoreSmall, Lightweight and Inexpensive
The Argweld PurgEye® 300 Nano Weld Purge Monitor® is small, lightweight and inexpensive.
The PurgEye® 300 Nano is equipped with an integrally mounted sensor to eliminate electrical interference.
The PurgEye® 300 Nano is specifically developed for weld purging of critical stainless steel and titanium joints and others where data logging, alarms and welder control are not necessarily required.
The PurgEye® 300 Nano is perfect for operation with manual welding, orbital welders, welding enclosures, pipe welding, chamber welding, duplex steel and titanium welding and ideal for welding stainless steel in ultra clean applications.
The PurgEye® 300 Nano has secure 'leak tight' connectors for weld purge hoses. Also, the instrument can be used with optional accessory hand pump and gas sampling probe.
The PurgEye® 300 Nano has low repair, refurbishment and re-calibration costs. There is no pump needed and hence there are no moving parts to fail.
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Read MoreTechnical Data and Specification
The PurgEye® 300 Nano has an operating voltage of AC 115/230 V single phase 50/60Hz. The unit uses an external 12 V Power Supply Unit with an input voltage range of AC 90 to 260 V (included).
The PurgEye® 300 Nano has a large alpha-numeric display.
Display readings can only be shown in ppm.
The PurgEye® 300 Nano has a warm up time of less than 60 seconds.
Supplied with:
External 12 V Power Supply Unit (including multiple international mains adaptor connections)
Sample tube set (40 cm red tubing and 1 metre green tubing)
User instruction booklet
Storage and presentation case
Calibration Certificate for the purpose of Quality Control Procedures and Management Systems
Argweld® PurgEye® 300 Nano Weld Purge Monitor® Accuracy Range
| Measuring Range: | 1,000 ppm down to 10 ppm |
| Accuracy: | ±2.0% of scale reading |
| Size: | 145 x 190 x 70 mm |
| Power Consumption: | 18 W |
| Operating Voltage: | AC 115/230 V single phase 50/60 Hz |
| Weight: | 1.5 kg |
Compare all Weld Purge Monitors® in the PurgEye® Family Range
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Read MoreArgweld® PurgEye® 300 Nano Weld Purge Monitor®
See what our users have to say...
![](images/stories/products/1C-PurgEye300Nano/2023/O2M-52-Marketing-05_WEB.jpg")
" style="margin-left: 10px; float: right;" width="20%" height="Nan" />I just may confirm that PurgEye® 300 Nano is really easy to use, with excellent results. The company which trains TIG welders on stainless steel pipes enjoys great benefit using it. Before, each welder would let argon flow as much as possible before starting to weld, to be sure that purging is sufficient. Now, they know when to reduce it prior to welding and in such a way they save good amount of argon. Also, the same company is very happy using it while developing WPS. Now, no guessing. And also important… any welders and their assistants can use it after few minutes of instruction.”
Zoran Stojanovic, ICI
"I am very pleased with your products, the Argweld® PurgEye® 300 Nano Weld Purge Monitor® is spectacular. We have never had welding of such high quality and consistency before and the Techweld MultiStrike® Tungsten Electrodes are a marvel. In fact I would like a box of 2.4 x 150. Send a quotation I want to begin using them."
Largest Stainless Steel Dairy Product Manufacturer in Paraguay
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Frequently Asked Questions
1.0 What sort of sensor is used in the Argweld® PurgEye® 300 Nano Weld Purge Monitor®?
The Argweld® PurgEye® 300 Nano Weld Purge Monitor® uses a solid state long life sensor of a unique design. It is very much lower in cost than other sensors that have to be used for 10 ppm measurements.
2.0 What is the intended application for the Argweld® PurgEye® 300 Nano Weld Purge Monitor®?
The Argweld® PurgEye® 300 Nano Weld Purge Monitor® is intended primarily for welding high quality joints made in titanium, duplex and other high spec stainless steels to prevent coking, oxidation and discolouration.
Where the inlet for the monitor sensor can be connected to a constant flow of exhausting weld purge gas.
When job specification demands accuracy in measuring oxygen levels in weld purge gas from 1000 ppm down to 10 ppm.
3.0 Why isn't the Argweld® PurgEye® 300 Nano Weld Purge Monitor® fitted with a pump?
Most welding applications have an adequate flow of weld purge gas that can be exhausted over the measuring sensor.
In the event that an adequate flow rate from the system being purged is not available, HFT® also manufactures a Weld Purge Monitor® with a pump, called the Argweld® PurgEye® 500.
4.0 What is the length of the purging hoses supplied with the Argweld® PurgEye® 300 Nano Weld Purge Monitor®?
The red tube is 40 cm long and the green tube is 1 metre long.
5.0 Is the Argweld® PurgEye® 300 Nano Weld Purge Monitor® sensitive to electrical disturbances?
Each instrument has shielding to prevent most forms of interference.
Quality Control Test and Inspection criteria are designed to account for as many variables as possible.
It is extremely rare that electrical interference will affect the monitor.
6.0 My Company needs a Calibration Certificate once a year for all instruments. How do I obtain one?
In the event that 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 distributor.
7.0 I need to detect oxygen level in pipes pre-heated to 300°C (575°F). Can I use the Argweld® PurgEye® 300 Nano for this range?
The Argweld® PurgEye® Weld Purge Monitors® should not be exposed to gas at a temperature above 50°C (122°F).
Please contact us for information about exhaust purge gas cooling methods.
8.0 Can Weld Purge Monitors® only be used when purging with argon?
The PurgEye® Weld Purge Monitors® 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 non-inert gases including nitrogen and nitrogen/ hydrogen mixes
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Read MoreShipping Information, Weights and Dimensions
Customs Tariff
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
Dimensions 145 x 190 x 70 mm
Gross weight 2.0 kg
Nett weight 1.5 kg
Volumetric weight 2.1 kg
Actual Instrument dimensions 145 x 190 x 70 mm
Actual Instrument weight 1.5 kg
Storage carry case dimensions 377 x 322 x 95 mm
The Argweld® PurgEye® 300 Nano Weld Purge Monitors® are available for immediate delivery.
Argweld® PurgEye® 300 Nano Weld Purge Monitor®
| PART Nº | PRODUCT DESCRIPTION |
| API300N | Argweld® PurgEye® 300 Nano Low Cost Weld Purge Monitor® Oxygen Analysing Instrument Suitable for operations from 115/230V single phase 20/60 Hz Measuring oxygen from 1000 ppm to 10 ppm Items Included: International multi mains adaptor connections Sturdy protective storage carrying and presentation case Calibration certificate for quality control purposes User manual |
Spares and Accessories
| PART Nº | PRODUCT DESCRIPTION |
| APIS110 APIS109 APIS308 APISN05 |
Vacuum extractor gas sampling hand pump Leak tight stainless steel probe Sample tube set Sturdy protective storage carrying and presentation case |
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Read MoreItems 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.
Argweld® PurgEye® 300 'Nano' Weld Purge Monitor® A4 Leaflet
Argweld® PurgEye® 300 'Nano' Weld Purge Monitor® Frequently Asked Questions
Return on Investment (ROI) Weld Purge Monitors and Weld Purging Systems
Understanding Atmosphere in PPM
Parts Per Million vs Percentage of Oxygen
Argweld® PurgEye® Weld Purge Monitors® Poster
Argweld® PurgEye® Weld Purge Monitors® Technical Tips Training Posters
Argweld® PurgEye® Weld Purge Monitors® Family Range Information Flyer
Technical Comparison Table of all Argweld® PurgEye® Weld Purge Monitors®
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® 300 'Nano' Weld Purge Monitor® User Instructions Technical Manual
Argweld® PurgEye® 300 'Nano' Weld Purge Monitor® Technical Notes
Argweld® PurgEye® 300 'Nano' Weld Purge Monitor® Certificate of Calibration
Argweld® PurgEye® 300 'Nano' Weld Purge Monitor® User List Customer Reference
Argweld® PurgEye® 300 'Nano' Weld Purge Monitor® Price List
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![O2M-52-Marketing-07 WEB]](/media/rokgallery/d/da28d092-d508-41c8-abf6-2563d2446592/405f15de-9053-437f-c7f9-95f416c42f14-thumb.jpg "O2M-52-Marketing-07 WEB]")
