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Version 4 – September 2015

2/7

1.1 Precision/Extended Mode with the SLG-0075

The SLG-0075 is offering two different flow sensing modes. The Precision Mode allows for precise flow sensing

starting at zero flow while the Extended Mode is made for a rough estimation of the current mass flow in higher flow

ranges. The Precision Mode is fully bi-directional with continuous output at and around zero. The Extended Mode is

uni-directional (positive flow direction only), and sensor output is restricted to the flow range between 2000 nl/min to

22000 nl/min. The calibration for each mode is stored on a separate calibration field (CF):



Calibration field 0: Precision Mode (default)



Calibration field 1: Extended Mode

For switching between the two modes of operation the internal calibration field has to be selected accordingly. This

can be done either by using the Sensirion USB/RS485 Viewer Software or by specific digital commands (see