Exponential damping - PR-21-S

PR-21 Series User Guide

Document code
IM-EN-PR21S
Revision
C
Language
English
Product
PR-21-S
Document type
User guide

Exponential (standard) damping works for most processes and is the standard choice for slow and continuous processes. The factory setting is always exponential damping, access the 3 DAMPING TYPE command to switch between different damping algorithms. In the exponential damping (standard damping), the damping time is the time it takes for the concentration measurement to reach half of its final value at a step change. For example, if the concentration changes from 50 % to 60 % and damping time is 10 s, it takes 10 s for the DTR to display concentration 55 %. A damping time of 5 … 15 s works best in most cases, the factory setting is 5 s. Use the 4 DAMPING TIME menu item to set the damping time. The following figure shows how exponential damping time affects the measurement.

Figure 1. Exponential damping