ATI
Q45P pH System
Part 4
– Configuration
29
O&M Manual
Rev-B (7/15)
displayed failures due to the high number of internal tests
occurring. As faults are corrected, they are immediately
cleared.
Faults are not stored; therefore, they are immediately
removed if power is cycled. If the problem causing the faults
still exists, however, faults will be displayed again after
power is re-applied and a period of time elapses during
which the diagnostic system re-detects them. The exception
to this rule is the calibration failure. When a calibration fails,
no corrupt data is stored. Therefore, the system continues
to function normally on the data that was present before the
calibration was attempted.
After 30 minutes or if power to the transmitter is cycled, the
failure for calibration will be cleared until calibration is
attempted again. If the problem still exists, the calibration
failure will re-occur. Press ENTER to initiate view of the
highest priority failure. The display will automatically return
to normal after a few seconds.
Sim Out
The Sim Out function allows the user to simulate the pH
level of the instrument to check the output settings. The
user enters a pH value directly onto the screen, and the
output responds as if it were actually receiving the signal
from the sensor.
This allows the user to check the function of attached
monitoring equipment during set-up or troubleshooting.
Escaping this screen returns the unit to normal operation.
Press ENTER to initiate the user entry mode, and the right-
most digit of the value will flash. Use arrow keys to modify
desired value.
The starting display value will be the last read value of the
input. The output will be under control of the SIM screen
until the ESC key is pressed.
Note:
If the HOLD function is engaged before the Sim Output
function is engaged, the simulated output will remain the
same even when the ESC key is pressed. Disengage the
HOLD function to return to normal output.
