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Goals and Symptoms
The user has a ION meter's analog output configured based upon Frequency. When there is no source voltage on the meter, the analog output value stays in the last known state instead of going to 0.
Facts and Changes
Any ION meter with an available analog output and an available arithmetic module.
Causes and Fixes
When there is no voltage at the metered terminals, the frequency is n/a. Because of this, the analog output registered the last known good value.
Follow the attached procedure to add logic to the output so that it displays 0 when there is no voltage present.