Teledyne 7500 Series Operating Instructions Manual page 48

Auto calibration status contact output is closed during auto zero calibration, and is open in other
cases.
Setting range
Cycle: 1 to 99 hours or 1 to 40 days (initial value 7 days)
Flow time: 60 to 599 sec (initial value 300 sec)
Caution
• When an auto zero calibration starts, the measurement screen automatically appears.
• Any operation other than forced stop of auto zero calibration (see Item 6.5.2) is not permitted during auto
zero calibration. "Auto Zero Calibration Cancel" cannot be performed with the key lock to ON. To cancel
auto zero calibration forcedly, set the key lock to OFF and then execute "Auto Zero Calibration Cancel".
• If the auto calibration period and auto zero calibration period have overlapped, the auto calibration is
retained, ignoring the auto zero calibration of that period.
Teledyne Analytical Instruments
48 Model 7500 Instruction Manual