Argweld® PurgEye® 500 Desk Weld Purge Monitor®

Monitor your Critical Welds from Desk-Mounted Model

The Argweld® PurgEye® 500 Desk with PurgeNet™ is a very much upgraded version of the former PurgEye® 500. Now with PurgeNet™, this model is ideal for use with Welding Chambers and Enclosures as well as Orbital Welding Machines and other Automatic Welding Systems.

This attractively priced Oxygen Analyser includes a unique, fast response, long life sensor with little maintenance requirement. The instrument comes complete with an integral pump to deliver regular flow of exhausting weld purge gas to the sensor to ensure consistent measurements and readings.

PurgeLog™ Software is included for computer interfacing, data acquisition, storage and printing of results and graphs for Quality Management Control purposes.

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.

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Designed for Zero Colour Welds

The PurgEye® 500 Desk Weld Purge Monitor® has been specifically designed and developed by Huntingdon Fusion Techniques HFT® as a desk-based instrument that can be integrated with automatic welding equipment for consistent measurement and indication of oxygen levels.

The addition of PurgeNet™ allows the PurgEye® Desk Weld Purge Monitor® to control the welding process for precise measurements of oxygen levels to prevent welding in the event that the level is to high and to continue when the level is low enough, thereby creating zero colour welds every time.

The PurgeNet™ accessory allows control of automatic welding other accessories including visual on/off light for remote viewing, a dew point meter and a temperature monitor for interpass temperature control while purging.

This model is ideal for critical welds on materials such as stainless, duplex and chrome steels along with titanium, zirconium and nickel alloys. It can be used for joints made in Welding Chambers, Flexible Welding Enclosures® as well as for orbital welding applications and for use with Pipe Weld Purging Systems.

The PurgEye® 500 Desk Weld Purge Monitor® is perfect for ultra critical or 'Golden' welds, where oxygen levels need to be indicated to a very precise level as low as 10 ppm.

The PurgEye® 500 Desk Weld Purge Monitor® is particularly suitable for welds in ultra clean conditions, such as in the aerospace and cryogenics industries, food and drinks manufacturing, semi-conductor, pharmaceutical and petrochemical sectors as well as any other process industries.

The integral electro-mechanical pump is designed to extract samples from the purge volume at pre-determined user settable intervals to provide a consistent flow of exhaust purge gas over the sensor, for stable readings and equipment control.

PurgeLog™ Software allows the print out of Quality Management documentation where the recording and auditing capabilities are considered vital to the welding traceability

PurgEye® 500 Desk Weld Purge Monitors® are available for immediate delivery.

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Life-Long Sensor with little Maintenance Requirement

PurgeNet ™

The PurgEye® Desk now comes complete with PurgeNet™, which controls all Automatic Welding Systems as well as Orbital Welders, causing them to switch on and off for example when oxygen level rises too high or falls to low.

For control of Automatic Welding Equipment by a Weld Purge Monitor®, the relevant cable accessory will be used. At that point, the Monitor will switch off your automatic welding system if by any chance the oxygen level should rise above your pre-set limit, to prevent the risk of weld oxidation. The Monitor will switch the welding system back on, once the excess oxygen has been purged away.

PurgeAlarm ™

The IP66 Rated (Environmental Protected) PurgeAlarm™ displays a red indicator, only if the PurgEye® has warmed up, the alarm enabled and is reading a greater value than the alarm threshold set by the user.

An optional green indicator can be fitted above the standard red indicator and will illuminate only if the alarm is active and reading a value lower than the alarm threshold set but the user. A sounder is available as an option to provide an audible alarm instead of the red light.

PurgeNet™ also works with PurgeLog™ to easily transfer weld purge data for Quality Control purposes.

The PurgEye® 500 Desk Weld Purge Monitor® is small, lightweight and portable. The automatic fault finding diagnostics can detect and report a number of possible faults.

Now with an OLED (organic light emitting diode) display, the PurgEye® 500 Desk Weld Purge Monitor® gives sharper, brighter and clearer readings for viewing at longer distances than before.

The monitor is menu driven by two of the four buttons on the front panel and it has an internal alarm with high and low points for oxygen level that can be set with the other two buttons.

The rugged, high frequency (HF) proof instrument measures and clearly indicates actual oxygen levels from 1,000 down to 1 ppm (accurate to 10 ppm).

The PurgEye® 500 Desk Weld Purge Monitor® incorporates an automatic internal audible alarm in the event of sudden oxygen level increase, or when the oxygen level reaches the lowest required point. The oxygen levels can be set by the operator.

The integral electro-mechanical pump for extracting a gas sample works automatically where it is required to deliver a constant flow of exhaust purge gas over the sensor. The PurgEye® 500 Desk Weld Purge Monitor® comes with a unique, fast response, long life sensor with little to no maintenance requirement. Special attention has been paid to electrical shielding to avoid interference. 

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With Electro-Mechanical Integral Pump

The Argweld® PurgEye® 500 Desk Weld Purge Monitor® has a large OLED screen, is menu-driven using four operating buttons on the front panel and has a user interface for external alarm, high/low ppm settings, on/off welding power supply switching and is manufactured to ISO 9000 Quality Standards. Display readings can be shown in ppm or percentage.

The Argweld® PurgEye® 500 Desk Weld Purge Monitor® has an RS232 serial port for connection to a PC.

PurgeLog™ data logging Software requires a PC running Microsoft® Windows and is compatible with the latest version. The recording and auditing capabilities of the HFT® Family of Weld Purge Monitors® are considered vital critical weld requirements where traceability is an ever increasingly important issue and Quality Management print outs are automatically available with PurgeLog™. The data connection cable is included. 

PurgeNet™ to provide the control of automatic welding systems via one of its accessories switching on and off according to oxygen levels.

Supplied with:

External 12 V Power Supply Unit (including multiple international mains adaptor Connections) with an input voltage range of AC 90 to 260 V
Input purge gas sample tube (green, 1 m) with filter
Interface data connection cable
User instruction technical manual
Storage and presentation case
Calibration Certificate for the purpose of Quality Control Procedures and Management Systems

Argweld® PurgEye® 500 Desk Weld Purge Monitor® Accuracy Range

Dew Point Sensor

During purging welders need to measure the oxygen content but also need to measure the ‘dew point’.

The dewpoint is the temperature where condensation begins and water will condense on the material being welded. This can affect the weld properties significantly.

We have recently added a Dew Point Sensor to our range that can be used in conjunction with our range of 10 ppm Weld Purge Monitors®, so rather than purchasing a separate, expensive Dew Point Meter, HFT®’s Dew Point Sensor that can be connected to the Weld Purge Monitor® via the PurgeNet™ lead.

The dew point sensor is designed to fit any of our Weld Purge Monitors® that read down to 1ppm:

- PurgEye® 200

- PurgEye® Desk

- PurgEye® 600

- PurgEye® 1000

- PurgEye® Site

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

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Frequently Asked Questions

1. What is the intended application for the Argweld® PurgEye® 500 Desk Weld Purge Monitor®?

The PurgEye® 500 Desk is for “in house/in factory use for weld purging of Welding Chambers and Enclosures of all kinds as well as tube and pipe welding production and verification of source gas quality. In house applications demanding extremely accurate readings from 1000 parts per million (ppm) down to 10 ppm, such as welds made in titanium, duplex, nickel alloys and high specification stainless steels. For companies which may need to produce quality control documentation to show which oxygen levels were present during various stages of the welding and post purging cycle. The software allows the user to plot oxygen reading against time, save the information to hard drive and print the data as required.

2. What is the measuring range of the PurgEye® 500 Desk?

The PurgEye® 500 Desk will measure down to 1 ppm and it is highly accurate down to 10 ppm.

3. What sort of sensor is used in the PurgEye® 500 Desk Weld Purge Monitor®?

The PurgEye® 500 Desk Weld Purge Monitor® uses a solid state long life sensor of a unique design. It has a very much faster response time and much greater stability in the readings.

4. My company needs a calibration certificate once a year for all instruments. How do I obtain one?

Huntingdon Fusion Techniques HFT® has several repair and recalibration facilities around the world. Contact us and we’ll refer you to the closest centre.

5. What is the length of the green connecting tube from the PurgEye® 500 Desk Weld Purge Monitor®?

The PurgeEye® 500 Desk Weld Purge Monitor® comes with a 1m green inlet tube with a replaceable filter. The end nearest the filter goes into the green port of the monitor and the other end connects with your purge gas exhaust.

6. Is the PurgEye® 500 Desk 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.

7. I need to detect oxygen level in pipes pre-heated to 300ºC (572ºF). Can I use the Argweld® PurgEye® 500 Desk under these conditions?

The Argweld® Weld Purge Monitor® should not be exposed to gas at a temperature above 50ºC (122ºF). In the event that your purging gases are raised in temperature above this level, HFT® can advise you of ways to cool the gas.

8. What is the integral pump for? 

Where there is insufficient flow of the exhausting weld purge gas, the PurgEye® 500 Desk Weld Purge Monitor® with its integral pump will extract the exhausting gas at a precise rate and draw it across the sensor, prior to discharging it to atmosphere.

9. What is an OLED screen?

The OLED (organic light emitting diode) display, will give brighter, clearer and sharper readings for viewing at greater distances and at wider angles than LED displays used by other monitors. These OLED displays are mainly symbol based not text based, which means menus are easily understandable no matter what language the user speaks. The OLED screen does not need a backlight.

10.0 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

11. What is PurgeNet™?

The PurgeNet™ facility allows a series of accessories to be added to the PurgEye® 500 Desk Weld Purge Monitor®. One accessory allows control of automatic welding systems to switch on and off according to oxygen levels.PurgeNet™ can be used with PurgeLog™ Software to transfer weld purge data for quality control of welds. PurgeNet™ connects to other smart accessories for weld purging, including the external, distance light system, which give a visual warning during welding in case of rising of falling oxygen levels. Other accessories include a Dew Point Monitor and a Temperature Monitor for interpass temperature control of the weld purging sequence.

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Shipping Information, Weights and Dimensions

Customs Tariff

Product Codes and Sizes

The PurgEye® 500 Desk Weld Purge Monitors® are held in stock and available for immediate delivery.  

PurgEye® 500 Desk Weld Purge Monitor® with PurgeLog™ and PurgeNet™

The PurgeEye® Accessories and Spares for the Argweld® Family Range of PurgEye® Weld Purge Monitors® (10 ppm - excluding Nano) are held in stock and available for immediate delivery.  

The PurgEye® Auxiliaries for the Argweld® Family Range of PurgEye® Weld Purge Monitors® (10 ppm - excluding Nano) are held in stock and available for immediate delivery. 

PurgeAlarm™ (NOTE: for use with PurgeNet™)

Service and Replacement

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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. 

Argweld® PurgEye® 500 Desk Weld Purge Monitor® A4 Leaflet

Argweld® PurgEye® 500 Desk Weld Purge Monitor® Sales Flyer

Argweld® PurgEye® 500 Desk Weld Purge Monitor® FAQ

Argweld® PurgEye® 500 Desk Weld Purge Monitor® Poster

PurgeNet™ Dew Point Purging Gas Moisture Sensor™ A4 Leaflet

PurgeNet™ Dew Point Purging Gas Moisture Sensor™ Information Flyer

PurgeNet™ Dew Point Purging Gas Moisture Sensor™ FAQ

PurgeNet™ Smart Cable A4 Leaflet

PurgeNet™ Smart Cable Information Flyer

PurgeNet™ Smart Cable  FAQ

PurgeAlarm™ Visual Alarm Indicator A4 Leaflet

PurgeAlarm™ Visual Alarm Indicator Information Flyer

PurgeAlarm™ Visual Alarm Indicator Information FAQ

PurgeLog™ Data Logging Software Information Flyer

PurgeLog™ Data Logging Software FAQ

PurgeNet™ Automatic Machine Interface A4 Leaflet

PurgeNet™ Automatic Machine Interface Information Flyer

PurgeNet™ Automatic Machine Interface Information FAQ

Argweld® PurgEye® Weld Purge Monitors® Filters

Return on Investment (ROI) Weld Purge Monitors and Weld Purging Systems

Understanding Atmosphere in PPM

Parts Per Million vs Percentage of Oxygen

How to convert Percent to PPM

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.  
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Argweld® PurgEye® 500 Desk Weld Purge Monitor® User Instructions Technical Manual
Argweld® PurgEye® 500 Desk Weld Purge Monitor® User Instructions Technical Manual Reset Password
Argweld® PurgEye® 500 Desk Weld Purge Monitor® User List Customer Reference
Argweld® PurgEye® 500 Desk Weld Purge Monitor® Price List

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