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Testo Combustion Analyzers

Testo 320 Series

For frequent testing and troubleshooting of residential and light commercial furnaces, boilers, hot water heaters, and other combustion appliances, the Testo 320 ensures correct combustion efficiency and CO safety analysis, each and every time.

  • Includes the testo 320 flue gas analyzer with O2 and CO sensor, USB mains unit, compact basic flue gas probe, replacement filters, and instrument case
  • Covers many applications, including flue gas measurement, flue draught measurement, pressure measurement, gas leak detection, ambient CO measurement, and differential temperature measurement
  • Self explanatory menu guidance with standardized measuring procedures for quick and easy handling

Testo 330 Series

For testing of commercial and industrial boilers, furnaces, and other combustion appliances, the Testo 330 measures O2, CO (up to 30,000 ppm), temperature, pressure, and other required combustion efficiency parameters. In addition, this flue gas analyzer has NOx upgradability, on-site printout capability, a large memory, and a graphic tuning chart to show ideal combustion efficiency.

  • Long life sensors (up to six years) with over-range protection
  • Industrial CO range of 8,000 ppm (up to 30,000 ppm via onboard dilution)
  • Onboard instrument diagnostics and system leak check
  • Optional NOx sensor is field upgradable


Test Equipment and Tools/Combustion Analyzers 
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320 Analyzer Kit CO/O2

320 Analyzer Kit CO/O2

Item #: 0563 3220 70
Brand: Testo

320 Analyzer Kit CO/O2
330-1 LL Combustion Analyzer no printer

330-1 LL Combustion Analyzer no printer

Item #: 0563 3371 70
Brand: Testo

330-1 LL Combustion Analyzer no printer
Testo 330i Kit#2 O2,CO,NO w/BT & dilutio

Testo 330i Kit#2 O2,CO,NO w/BT & dilutio

Item #: 400563 3002
Brand: Testo

Testo 330i Kit#2 O2,CO,NO w/BT & dilutio 330i Combustion Analyzer w/Bluetooth and Auto CO dilution.Flue Gas Probe 12in long, 2ft hose,Power Supply, Carrying Case, Spare particle filters, Probe fixation for flue gas probe
330-1 Comb Analyzer Kit O2 0-4000ppm CO

330-1 Comb Analyzer Kit O2 0-4000ppm CO

Item #: 400563 3302
Brand: Testo
400563 3302

330-1 Comb Analyzer Kit O2 0-4000ppm CO Combustion analyzer includes Probe, Printer, Filters, Power Pack, and Case

330-2LL Comb Analyzer O2 0-30000ppm CO

Item #: 400563 3323
Brand: Testo
400563 3323

330-2LL Comb Analyzer O2 0-30000ppm CO Combustion Analyzer Includes Probe, Filters, Power Pack, and Case
Testo 330-2G LX Kit w/ Display and BT

Testo 330-2G LX Kit w/ Display and BT

Item #: 400563 3372
Brand: Testo

Testo 330-2G LX Kit w/ Display and BT Industrial combustion analyzer with display and Bluetooth; Kit #2 With 02.CO, and NOX. Kit includes Analyzer inch foot gas probe w/7ft hose; Li recharger with battery,power supply. recharger, particle filters and case. NO Printer included.