CONTACT US      email    |   07 3823 1922 

CalTrak XL for Gas Flow Calibration

CalTrak XL High Flow Gas Flow Calibrator by Sierra Instruments

Primary Standard High-Flow Gas Flow Calibration

The Sierra Instruments CalTrak® XL is the leading high-flow primary standard calibrator on the market today. The XL is used for the calibration and verification of mass flow meters, controllers, variable area flow meters, and precision in-situ calibration of industrial flow meters and controllers.

With the increased demand for higher flows of process gas, there is a heavy demand to validate and calibrate high flow gas meters and controllers.  

Has a wide calibration, so a single XL system will accurately calibrate so-called low flow devices from 15 slpm, as well as much higher flow devices up to 1500 slpm. 

Sierra manufactures the CalTrak XL to ISO 17025 standards at an NVLAP-accredited lab using assets that are directly traceable to NIST.


  • Begin to calibrate up to 1500 slpm
  • Replace bell provers or sonic nozzle arrays
  • Bring ± 0.15% of reading accuracy to the factory floor
  • Quick, easy to use, automatic data capture 
  • Results directly traceable to NIST

Specifications & Downloads
Video Demos

Benefits of the CalTrak XL

  • The performance of only the highest level metrology laboratories can now be yours
  • Accurate high flow primary standard for labs & industry
  • Less expensive than bell provers, sonic nozzle arrays and popular secondary standards
  • Flexible all-in-one multiple cells eliminates switching cells
  • Proven dimensionally-based primary standard accuracy backed by a rigorous uncertainty analysis
  • Manufactured to ISO 17025 standards at an NVLAP-accredited lab
  • Cover a broad set of instrument flow ranges at your facility
  • Collected data is directly traceable to NIS
  • Surpasses pressure-based secondary methods
  • Everything you need to do your own flow calibration
  • Suitable for most non-corrosive gases
  • Accurate and reliable gas flow readings independent of gas species measured
  • Reading options: Single, continuous or burst, with user-selectable averaging from 1 to 100
  • Run automatically in continuous mode or operate manually (one flow reading at a time)
  • Take up to up to 100 measurements in an average continuous mode sequence
  • Easy-to-use, large LCD readout screen and 23-button keypa
  • Generates calibration certificate easily
  • Communicate via RS-232, USB, and use free CalSoft® software included
  • CalSoft® software automatically acquires flow data for easy data export
  • No mercury or other hazardous materials
  • Low maintenance

Industries suitable for use

  • Analytical
  • Life Sciences & Health
  • Custody Trasnfer Billing
  • Biopharmaceutical
  • Life Science
  • Medical Devices

CalTrak XL Specifications

To view all the specifications for the CalTrak XL you can download the data sheet here



View the video by Sierra on Primary Standard Gas Flow Calibration Systems

Flow Type: Gas Flow Meters