Sierra CalTrak XL High Flow Primary Gas Flow Calibrator

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Sierra CalTrak XL High Flow Primary Gas Flow Calibrator

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Bring world class accuracy to your facility. Sierra’s CalTrak® XL is the leading high flow primary gas flow calibrator on the market today. With increased demand for higher flows of process gas, there is a requirement to validate and calibrate high flow gas meters and controllers. Designed to replace aging bell provers, the XL meets that need with an impressive standardized accuracy of +/-0.25% of reading over a flow range of 5 slpm to 500slpm or +/- 0.30% from 15 slpm to 1500 slpm.



  • Primary standard: Dimensionally based piston prover system
  • Accuracy: +/- 0.25% reading mass flow from 5 to500 slpm; +/- 0.30% from 15 slpm to 1500 slpm
  • For all inert gases
  • For mass or volumetric flow rate
  • Range: 5 slpm to 1500 slpm
  • Manufactured to ISO 17025 standard at NIST-accredited lab (NVLAP)
  • For flow calibration labs and general industry use
  • Fast: readings in 1to 60 seconds (flow dependent)
  • Easy: push one button!
  • Proven CalSoft™ Software
  • Hands-free auto mode
  • Fully traceable to NIST
  • CE Approved, RoHs compliant


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