Colorimetric gas detector tubes

TWA measuring system (time-weighted average) – also known as dosimeter tube or passive tubes gas detection – measures the time-weighted average concentrations of a gas in ambient air.

• The dosimeter tube is inserted in its holder and wore close to the breathing zone (e.g. a shirt collar) to get an accurate measure of inhaled concentrations. This allows the monitoring of hazardous exposure during a working day.
• Thanks to this system, wokers can easily get daily exposure concentrations and evaluate working areas. These simple and direct measures require no specific analyzis instruments or complex operation procedures.

Gas Detection Tubes System - Specification sheet (2.4 MiB)

The colorimetric gas detection tube system is a simple and accurate solution composed by a manual sampling pump and a specific gas detection tube. They are designed for use together.

• Accurate: the sampling pump features a mechanical accuracy piston which creates a vacuum then enables direct reading on the colored tube (colorimetric tube)
• Swift: one or two pump strokes are enough to draw sample and the value can be directly read on the tube
• User-friendly: no knowledge, no specific process and no technical competence are required

Gas Detection Tubes System - Specification sheet (2.4 MiB)

The GSP-300 gas sampling pump is a very accurate aspirated pump designed for TWA and STEL measurements with colorimetric gas detection tubes

• Large LCD screen for pump display and setup
• Adjustable 50/520 mL/min flow according to inserted tube
• Flow automatic correction
• 10 hours runtime with two AA batteries
• Dimensions: 80 x 40 x 10 – weight: 300 grams

Specification sheet GSP 300 (338.0 KiB)

Combined with the Gastec pump, the Pyrtec 840 pyrolyzer thermally converts freons (fluorochlorocarbons), halogenated hydrocarbons and some anaesthetic gases in order to accurately measure them.

List of freons: R11, R12, R22, R112, R113, R114, R123, R124, R141B, R22

• In-situ user-friendly, cost-effective, quick and accurate measurement
• 2 minutes warm-up time
• Filament lifetime: around 1,000 measures at 20 ppm
• Dimensions: 150 x 68 mm – weight: 245 grams
• Relative runtime autonomy: 2 hours continuously

Pyrolyzer Pyrotec 840 - Specification sheet (240.6 KiB)

Airtec tubes enable easy and fast quality monitoring of compressed air cylinders for self-contained breathing apparatus, airline systems and diving bottles to comply with the EN12021 standard

• • Monitored gases: CO, CO2, H2O, NO, NO2, oil vapors
  • User-friendly and accurate monitoring of breathable air quality
  • Convenient and lightweight carrying case for on-site monitoring
  • Pressure reducer connection to avoid loss
  • Two available kits: STD-300 standard kit and AIR-QUAL kit

• Additional information

  Airtec tubes are a simple and convenient system for monitoring gas cylinders, compressed breathing air and airline systems. As industrial applications often produce, or are performed in the presence of harmful contaminants, it is essential to test these air supply units before using them. When self-contained breathing apparatus (SCBA) or other devices are used for operators breathing protection, breathing air quality requires special attention. Contaminants that may enter a compressor or contaminants generated can be harmful to the user and the protective equipment.

   

  The Airtec Tube gas detection is a convenient and economical system for testing the quality of compressed breathing air. Measurement process is swift and easy to perform and requires no training or calibration.

   

  Contrary to colorimetric gas detector tubes, Airtec tubes do not require a sampling pump but a breathing air quality test kit which is intrinsically safe and can be used in any situation. Airtec tubes can detect the most common contaminants in compressed gas and supplied air systems. Indeed, they can monitor evaluate concentrations of carbon monoxide (CO), carbon dioxide (CO2), water vapor (H2O), nitrogen oxides (NO and NO2) and oil mist.

   

  The measurement procedure is quite easy to perform and requires only a few minutes. First, snap off both ends of the tube and insert the tube into the tube holder with the arrow pointing down. Then, adjust the flowmeter to the specified flow rate and note where the color stain stops. As soon as the sampling time is finished, turn off the air supply and get immediately instant reading of the contaminant concentration directly on the tube. This way, Airtec gas detector tubes require no specific training or technical skills so that anyone can use them quicly and safely.

   

  Airtec detector tubes are supplied in packs of 10 and are designed to meet monitoring requirements set in Standard G-7.1.Tubes by the Compressed Gas Association (American trade association for industrial and medical gas supply industries).

Specification sheet Tubes AIRTEC (236.1 KiB)