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Fluke molbloc-L Laminar Flow Element
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Fluke molbox1+ Flow Terminal

Fluke molbloc-S Sonic Nozzle Calibration Device

  • Covers ranges up to 5,000 slm in N2 and air
  • Useable with molbox1+, or existing molbox1 and molbox RFM mass flow terminals and COMPASS software
  • Proven critical flow venturi (sonic) nozzle operating principle supported by gravimetric calibration
  • Minimal sensitivity to contamination
  • Measurement uncertainty:
    to ±0.125% of reading with molbox1+
    ± 0.2 % of reading with molbox1
    ± 0.5 % of reading with molbox RFM
  • Air, N2, Ar, He and other calibrations available, humid air density compensation supports use with ambient air
  • Excellent rangeability (10:1 turndown), with molbox1+S, or other molbox models with vacuum.
  • Redundant absolute upstream pressure measurement using both molbox absolute pressure transducers reduces uncertainty and increases reliability
  • Integral gas temperature conditioning and measurement
  • Continuous, real-time reading, as with traditional molbloc-L laminar element
  • Can be fully automated
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Overview

Sonic nozzle based molblocs for gas flow up to 5,000 slm

molbloc-S® Sonic Nozzle Flow Element is a high precision transfer standard intended for calibrating other transfer standards or process flow meters and controllers. This sonic nozzle calibration device is used with molbox1+ or molbox RFM™ terminals to extend the range of molbloc/molbox™ calibration systems and deliver superior accuracy at medium and high flows. Existing molbox1 terminals with version 4.0 embedded software or later and all molbox1+ terminals can be used with molbloc-S.