Fluke has introduced the molbox2 flow terminal, a major upgrade to its trusted molbloc/molblox gas flow calibration system. Designed for industries where accuracy is critical, the molbox2 offers the lowest gas flow uncertainties available today.

The system works in tandem with Fluke’s molbloc flow elements to calibrate a wide range of devices, including thermal mass flow controllers (MFCs), rotameters, turbine meters and bubble meters. It is best used in pharmaceutical, semiconductor, aerospace and environmental holding conditions. Its modular design, real-time measurements and traceable capabilities make it a versatile solution for both routine and high-spec applications.

At the core of molblox2’s performance is Fluke’s proprietary quartz reference pressure transducer (Q-RPT) technology, enabling ultra-precise pressure measurement for both absolute and differential values. Combined with enhanced calibration linearity and expanded flow element modelling, it delivers unmatched flow accuracy, even without calibration in actual gases, thanks to integration with NIST’s REFPROP10 gas property database.

For users who require greater versatility, the molbox2-S configuration enables wider rangeability with sonic nozzle flow elements (molbloc-S) without the need for vacuum pumps. Supporting pressures up to 2MPa, molblox2-S allows lab production environments to calibrate devices across a wider flow spectrum while reducing equipment requirements.

Calibration options range from premium uncertainty levels of ± 0.125% of reading to accredited and traceable specifications for select gases, giving users the ability to balance cost, compliance and performance. The system supports traceable calibrations for 27 gases, including nine with accredited uncertainty specs, without needing to separate calibrations in each gas.