Electronics 590-24 - Manual (Page 18)

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A) Decimal Location:
Purpose: To change the resolution of the display. There are 2 modes that toggle when the A
key is selected.
1. 999.99 for Air Valves.
2. 9999.9 for Wheel Valves.
B) Std/Metric:
Purpose: To change the display from lb/min. to kg/min. by pressing the B key.
C) Auto Zero on/off
Purpose: To activate or deactivate the auto-zero function. The auto-zero routine will establish
zero output voltage automatically thus accommodating minor output signal voltage changes
that occur with time or temperature.
Function: To turn auto-zero function on or off press “C” repeatedly.
Auto-zero on:
When the valve is not enabled: The unit will automatically establish a zero output signal un-
less the sensor detects a signal greater than 10%. This identifies an abnormal end-of-cycle
condition indicating possible malfunction, such as a sensor not purging at end of a cycle.
When the valve is enabled: The unit will hold its last established value. Auto-zero off disables
this feature.