Measurement filtering factor - HPP271

HPP271 User Guide

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You can set a filtering factor that affects the speed at which the latest measurements are integrated into the output of the probe. This allows averaging the output if the measuring environment produces occasional exceptionally high or low readings.

The filtering factor can be set either with Modbus configuration register 0308hex, Vaisala Insight software, Indigo200 transmitter or Indigo80 handheld indicator.

By default, the filtering factor is set to 1.0, which means the latest measurement is shown directly in the output, without any filtering. To apply filtering, enter a lower filtering factor to include previous measurements in the calculation of measurement output. For example, changing the filtering factor to 0.9 results in an output that is a combination of the latest measurement (90%) and the previous measurement output (10%).