Hach Polymetron 2582sc Manual Del Usuario página 26

8.2 Diagnostics/Test menu
The Diagnostics/Test menu shows current and historical information about the sensor. Refer to
Table 3. Push the main menu icon, then select Devices. Select the device and select Device menu
> Diagnostics/Test.
Option
Module information
Sensor information
Calibration days
Calibration history
Reset calibration history For service use only
Sensor signals
Membrane days
Reset membrane
8.3 Warning list
A warning does not affect the operation of menus, relays and outputs. The screen changes to an
amber color. The diagnostics bar shows the warning. Push on the diagnostic bar to show the errors
and warnings. As an alternative, push the main menu icon, then select Notifications > Warnings.
A list of possible warnings is shown in
Warning
DO is too high.
DO is too high.
Temperature is too high.
Temperature is too low.
Current is too high.
Current is too low.
Calibration is overdue.
Replace a sensor.
26 English
Table 3 Diagnostics/Test menu
Description
Shows information about the sensor module.
Shows the sensor name and the serial number entered by the user.
Shows the number of days since the last calibration was done.
Shows a list of calibrations by date/time stamp. Use the arrows keys to select a
calibration, then push OK to show the details.
Shows the current sensor signal information.
Shows the number of days that the sensor membrane has been in operation.
Sets the Membrane days counter to zero and sets the calibration data to the
defaults.
Reset the Membrane days counter when the sensor membrane is replaced.
Table 4.
Table 4 Warning list
Description
The measured value is > 2000 ppb
(or 2 ppm).
The measured value is < 0 ppb.
The measured temperature is >
50 °C.
The measured temperature is <
0 °C.
The measured current > 200 µA.
The measured current < -0.5 mA.
The Calibration reminder time has
expired.
The sensor has been in operation
for more than 365 days.
Resolution
Make sure that the dissolved oxygen (DO)
level in the process water is within the
operating limits of the sensor. Calibrate or
replace the sensor.
Calibrate or replace the sensor.
Decrease the sample temperature.
Increase the sample temperature.
Make sure that the dissolved oxygen level in
the process water is within the operating limits
of the sensor. Calibrate or replace the sensor.
Calibrate or replace the sensor.
Calibrate the sensor.
Replace the sensor membrane and calibrate
the sensor. If the calibration result is pass, set
the Membrane days counter to zero. Refer to
Diagnostics/Test menu on page 26.