Thermo Scientific™

Model 146i Multi-Gas Calibrator

 Related applications:
Calibrate ambient air and other gas monitoring instrumentation with the Thermo Scientific™ Model 146i Multi-Gas Calibrator, which generates gas standards. The output of the Model 146i is used to calibrate instruments that perform zero, precision, Level 1 span checks, audits, and multi-point routines in accordance with USEPA requirements.

Discover the iQ to work smarter with our next generation 146iQ Multi-Gas Calibrator.

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Key Features:
  • Calibrator supplies precise levels of ozone, carbon monoxide, non-methane hydrocarbons, sulfur dioxide, nitric oxide and nitrogen dioxide or other gases
  • Mass flow controllers dilute standard gases for the calibration of gas monitoring instrumentation
  • Multiple calibration routines can be stored in calibrator memory
  • Microprocessor-based calculation increases operator availability
  • Unit can be operated remotely by a data logger or to perform multipoint calibrations
  • Gas Phase Titration for Generation of O3 and NO2
Ozone Generator Option:
  • Maximum output: 1ppm at 6 SLPM
  • Minimum output: 10ppb at 6 SLPM
Photometer System:
  • Full scale range: 100ppb to 5ppm user selectable
  • Linearity: 1% of full scale
  • Precision: 1ppb
  • Response time: 180 seconds to 95% of target
  • Minimum detectable limit: 3 ppb
iSeries Advantage:
  • Ethernet connectivity for efficient remote access
  • Enhanced user interface with one button programming and large display screen
  • Flash memory for increased data storage and user downloadable software
  • Enhanced electronics design optimizes product commonality
  • Improved layout for easier accessibility to components
User services

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Service offerings
Overview of all services including support plan options, repairs and calibrations, spare parts and technical training.

Factory Depot 
Request an RMA number and send your instrument to our factory for repair.


Manuals & protocols