ATI
Q46UV UV254/Turbidity Monitor
Part 6 - Calibration
44
O&M Manual
Rev-D (11/19)
1. Scroll to the CAL menu section using the MENU key and press ENTER or the UP arrow key.
2. Press the UP arrow key until
Cal Temp
is displayed.
3. Press the ENTER key. The message
Place sensor in solution then press ENTER
will be
displayed. Move the sensor into the calibration reference (if it hasn’t been moved already)
and wait for temperature equilibrium to be achieved. Press ENTER to begin the calibration
sequence.
4. The calibration data gathering process will begin. The message
Wait
will flash as data is
accumulated and analyzed. The
°C
or
°F
symbol may flash periodically if the reading is too
unstable.
5. The message
Adjust value - press ENTER
will be displayed, and the right-most digit will
begin to flash, indicating that the value can be modified. Using the UP and LEFT arrow keys,
modify the value to the known ref solution temperature. Adjustments up to ± 5 °C from the
factory calibrated temperature are allowed. Press ENTER.
Once completed, the display will indicate
PASS
or
FAIL
. If the unit fails, the temperature
adjustment may be out of range, the sensor may not have achieved complete temperature
equilibrium, or there may be a problem with the temperature element. In the event of calibration
failure, it is recommended to attempt the calibration again immediately.
