With Electro-Mechanical Integral Pump

Argweld PurgEye Weld Purge Monitor Gas Analyser Oxygen Weld Analysers 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

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: 2.2 kg
Pump Flow Rate: 3.5 - 4 litre/min


Dew Point SensorDew Point Sensor for accurately measuring the dew point.

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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