The Sample-Draw Transmitter is a single gas detector, which allows users to extract a gas sample from deep shafts, tall ceilings, wells, pits and many other locations where it is either, difficult or impossible to place a diffusion sensor. An internal motorized pump provides the power to transport gas samples to the sensor. This instrument can be configured for the detection of hydrocarbon, oxygen or other toxic gases in a wide variety of applications.

Key Features

  • Reliable method for sampling difficult to access areas
  • Accepts sample lines up to 100 ft.
  • Flowmeter with low-flow indicator
  • Robust pump operates on 12 or 24 VDC, thereby reducing installation costs
  • NEMA 4X, weather & corrosion resistant housing


  • Wastewater Treatment

Barscreen rooms, effluent, wetwells, sewage lift stations, chlorine treatment/storage areas, digesters, permit-required confined spaces and grit settling area monitoring

  • Water Treatment

Chlorine storage, ozone storage and delivery, sumps and pits

  • Semiconductor Manufacturing

Gas bunker, tool, gas jungle, gas cabinet, exhaust duct and cleanroom moni-toring

  • Automotive Manufacturing

Engine and emission testing bay, paint booth and paint robot monitoring

  • Meat Packing

Cold storage, flash freezers and warehouse monitoring

  • Chemical & Petrochemical Refineries

Sulfur recovery unit and HF Alky unit monitoring

  • Aerospace Industry

Cleanroom and cryogenic research lab monitoring

Gases Detected

Gas Sensor Type Formula Standard Range
Ammonia Electrochemical NH3 0 to 100 ppm
Arsine Electrochemical AsH3 0 to 1.00 ppm
Carbon Monoxide Electrochemical CO 0 to 500 ppm
Chlorine Electrochemical Cl2 0 to 10.0 ppm
Chlorine Dioxide Electrochemical ClO2 0 to 2.00 ppm
Combustible Catalytic   0 to 100% LEL
Diborane Electrochemical B2H6 0 to 1.00 ppm
Fluorine Electrochemical F2 0 to 10.0 ppm
Hydrogen Chloride Electrochemical HCI 0 to 30.0 ppm
Hydrogen Cyanide Electrochemical HCN 0 to 50.0 ppm
Hydrogen Fluoride Electrochemical HF 0 to 10.0 ppm
Hydrogen Sulfide Electrochemical H2S 0 to 100 ppm
Nitric Oxide Electrochemical NO 0 to 100 ppm
Nitrogen Dioxide Electrochemical NO2 0 to 20.0 ppm
Oxygen Electrochemical O2 0 to 30.0% Vol.
Ozone Electrochemical O3 0 to 1.0 ppm
Phosphine Electrochemical PH3 0 to 1.0 ppm
Silane Electrochemical SiH4 0 to 20.0 ppm
Sulfur Dioxide Electrochemical SO2 0 to 20.0 ppm

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