Dual-Gas Weld Purge Monitor for Oxygen (0–2000 ppm) and Carbon Dioxide (0–100%) with Integrated Sampling Pump

Description

The TecPen Oxygen and Carbon Dioxide Weld Purge Monitor w/ Sampling Pump is designed to provide accurate measurements down to 0% oxygen and up to 100% carbon dioxide when back purging with argon and CO2 gas mix during welding. This portable O2 and CO2 analyzer will verify that there is no oxygen during argon back purging for TIG welding, or argon CO2 blend for MIG welding.
Not sure which analyzer is right for you? View our guide to help you decide.

Features:

• 🎯 Accurate O₂ measurement down to 0% for precise purge verification
• 📊 Measures CO₂ levels up to 100%
• ⚡ No warm-up time—ready to use instantly
• 🔄 Integrated sampling pump*
• 💾 Built-in data logging with USB export (.CSV)*
• 🔧 Helps prevent oxidation and welding defects
• 🏭 Ideal for MIG/TIG welding and industrial environments

Models

• TS-300 – TecWeld 0-2,000ppm Oxygen
• TS-302 – TecWeld O2 + CO2 Weld Purge Monitor

Specifications

Oxygen Sensor

• Measurement Range: 0-2,000ppm
• Accuracy @ 0-0.5%: ± 2%Mev**
• Accuracy @ 0.5-2.5%: ±3% Mv*
• Accuracy @ 2.5-5%: ±5% Mv*
• Resolution: 1ppm
• Response time at 25°C/ 77°F: <150ms
• Pump flow: 400mL/min.
• Temp. range Min./Max: -10°C/ +60°C (14°F/140°F)
• Temperature compensation: 10-30°C (50-86 °F)
• Zero-point adjustment interval: adjusted to air at power on

CO2 Sensor

• Measurement Range: 0-100%
• Accuracy @ 1%: ±70 ppm +/- 5% of measuring value
• Accuracy @ 100%: ±300 ppm +/-5% of measuring value
• Resolution 1ppm
• Pump flow: 400mL/min.
• Response time at 25°C/ 77°F: 10s
• Temp. range Min./Max: -25°C/55°C (-13°F/ 131°F)
• Temperature compensation: 10-30°C (50-86 °F)
• Recommended zero-point adjustment interval by customer: 6 months

Device

• Power supply: 5V USB and LiPo Battery
• Storage Capacity: 4GB
• Rechargeable battery life: > 3 hours per charge
• Data Interface: USB
• Temperature compensation: 50 – 86°F (10 – 30°C)
• Display: OLED
• Cleaning: no organic solvents, 40% EtOH
• Parts touching sample: St.1.4404 / PTFE / glass
• Case: Anodized aluminum
• Protection: IP65
• Manufacturer service Interval: 3 years
• Case with Device Weight: 2.45 lbs.
• Case Dimensions: 12 x 11 x 3.25 inches
• Device Weight: 0.50 lbs.
• Device Dimensions: 7 x 2 x 1 inch
• Sensor cap replacement interval: 2 years
• Recommended customer calibration interval: 6 months

TecSense sensors are CE, FCC, IC, KC, and MIC marked, and meet the requirements of ASTM F2714-08. The manufacturer is DIN ISO 9001/2015 certified.

Warranty

• 1 year – See CO2Meter Terms & Conditions.

Documents

 Data Sheet (pdf)

 Manual (pdf)

 TecWeld Application Overview (pdf)

 EU Declaration of Conformity (pdf)

Factory Reset and Calibration Video

Accessories

• PRT-SEPTUMS – septum’s for tecpen (pack of 18) – contact us for more info
• PRT-NEEDLES  – 25/0.8 needles for tecpen (pack of 10) – contact us for more info

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