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Gas Analyzers

Reliability Direct, Inc. offers portable, quality gas analyzers used in the monitoring and analysis of Industrial, Environmental, Process and Automotive Emissions. We represent noted manufacturer's such as Extech Instruments, Dwyer Instruments, and Test Products International. Applications range from simple Combustible Gas Leak Detectors to sophisticated CO and NOX Analyzers.
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CO10 Carbon Monoxide (CO) Meter Extech CO10 Carbon Monoxide (CO) Meter

  • Faster response measurements to 1000ppm
  • Easy to read 1999 count backlit displays CO levels from 0 to 1000ppm
  • 1ppm resolution with ±5% or ±10ppm basic accuracy (whichever is greater)
  • Utilizes a stabilized electrochemical gas specific (CO) fast response sensor
  • Audible alarm starts at 35ppm
  • Backlight for low light conditions
Info Video

Our Price: $249.99
EZ40 EzFlex Combustible Gas Detector Extech EZ40 EzFlex Combustible Gas Detector

Quickly Identifies and Pinpoints gas leaks

  • 16" (406mm) gooseneck for easy access into hard to reach locations
  • Visible and audible alarm at 10%
  • Locate the smallest leaks

List Price: $148.99
Our Price: $148.99
Sale Price: $130.99
You save $18.00!
TPI-A771 Carbon Monoxide Adapter TPI-A771 Carbon Monoxide Adapter

The A771 is a CO adapter designed to work with your DMM to measure ambient air CO. Can also be used as a personal CO alarm.
  • Built-in Alarm is preset to 30ppm. Setting can be set by user.
  • Use with any DMM with minimum 2 1/2 digit LCD, 2 or 4 Volt DC range and 10M Ohm or greater input impedance.
  • Detect CO levels from 0-1999 ppm, with resolution as low as 0.1 ppm and ñ5% of reading accuracy.
  • Soft pouch included.

Our Price: $129.95
TPI-707 Carbon Monoxide Analyzer TPI-707 Carbon Monoxide Analyzer

The 707 tests flue gases at home or office spaces for the presence and location of carbon monoxide leaks. This instrument fits comfortably in your hand and operates with just the push of a button.
  • Pump driven
  • Pump flow block indicator
  • 1 ppm sensitivity
  • Measures from 0 to 9,999 ppm
  • Auto zero
  • Backlit display
  • Easy field calibration, low cost CO sensor

Our Price: $374.95
TPI-708 Combustion Efficiency Flue Gas Analyzer TPI-708 Combustion Efficiency Flue Gas Analyzer

No furnace installation or service work should be performed without doing a gas leak test and a Carbon Monoxide (CO) Test. Combustion Efficiency Analyzer Three Tools in One! The 708 is an affordable combustion efficiency analyzer, CO analyzer, and a differential thermometer for residential and light industrial applications.
  • Measures CO, O2 and temperature
  • Calculates CO2, efficiency, excess air and CO air free
  • Selectable fuels: natural gas, light oil, heavy oil and LPG
  • Pump driven for fast response
  • Flue probe with built-in thermocouple
  • IR printer port - use optional A740 Infrared Printer
  • Soft carrying case
  • Protective rubber boot

Our Price: $499.95
TPI-708C9 Combustion Analyzer TPI-708C9 Combustion Analyzer


  • with Digital Clamp
  • IR Printer
  • Digital Manometer
  • Two 1/4" Brass T Fitting
  • Two static tips
  • 6' Pressure Tubing

Our Price: $999.95
TPI-708C10 Combust. Analyzer, Digital Manometer, IR Printer, and two of each; Fiberglass Probes, Brass Fitting 1/8x1/4" barbs, 1/4" Brass T Fitting TPI-708C10 Combust. Analyzer, Digital Manometer, IR Printer, and two of each; Fiberglass Probes, Brass Fitting 1/8x1/4" barbs, 1/4" Brass T Fitting

Our Price: $849.95
TPI-712 Combustion Gas Analyzer TPI-712 Combustion Gas Analyzer

Accurately test flue gases in furnaces and domestic boilers to determine operation efficiency. Time/date documentation for future reference. Measures CO, O2, pressure, and temperature
  • Calculates CO2 and gross or net efficiency
  • Works on High Efficiency furnace
  • Select between 4 fuels (Natural Gas, LPG, Light Oil, Heavy Oil)
  • Pump driven for fast response
  • Dual input differential manometer with 3 selectable units of measure: kPa, mBar, inH2O
  • Flue probe with built-in thermocouple
  • IR printer port - use optional A740 Infrared Printer
  • Soft carrying case
  • Protective rubber boot

Our Price: $849.95
TPI-714 CO and NOX Analyzer TPI-714 CO and NOX Analyzer

714 CO & NOX Analyzer Five Tools in One! The 714 is an all in one instrument designed to maximize diagnostic efficiency and accuracy.
  • Measure O2, CO, and NO
  • Calculate CO2, NOX, efficiency, excess and air ratio
  • Will work with high efficiency furnaces, hot water heaters, and other combustible gas appliances
  • Dual input K-type thermocouple temperature tester
  • Dual input differential manometer with 3 selectable units of measure: kPa, mBar, inH2O
  • IR printer port use optional A740 Infrared Printer
  • Protective rubber boot
  • Soft carrying case

Our Price: $1,795.00