Teledyne 7500ZA - Infrared Gas Analyzer - Manual (Page 73)

NDIR Gas Analyzer Settings and Calibration
Teledyne Analytical Instruments 57
Setting the Range
Cycle 1 to 99 hours or 1to 40 days (default: 7 days
Flow Time 60 to 900 sec (default: 300 sec.)
Caution: When an auto zero calibration starts, the
measurement screen automatically appears.
Any operation other than “Auto Zero Calibration
Stop” (see Item 6.5.2) is not permitted during auto
zero calibration. “Auto Zero Calibration Stop”
cannot be performed with the key lock set to ON.
To forcibly cancel auto zero calibration, set the
key lock to OFF and then execute “Auto Zero
Calibration Stop”.
If the auto calibration period and auto zero
calibration period overlap, the auto calibration is
retained, ignoring the auto zero calibration of that
period.
When the hold setting is set to ON, the hold time
for auto calibration contact and measurement
value output signal is extended after calibration
for gas purging.
Remote Start
A remote start input will begin a calibration event regardless of
whether the auto zero calibration is set to ON or OFF.
6.5.2 Forced Run/Stop of Auto Zero Calibration
Auto zero calibration can be performed just once, or auto zero
calibration can be forcibly stopped during calibration.