Troubleshooting - Hach Polymetron 9526 Basic User Manual

1. Use a clean, soft cloth to remove loose debris from the end of the sensor. Rinse the sensor with
clean, warm water.
2. Soak the sensor for 2 to 3 minutes in a soap solution.
3. Use a soft bristle brush to scrub the entire measuring end of the sensor.
4. If debris remains, soak the measuring end of the sensor in a dilute acid solution such as < 5%
HCl for a maximum of 5 minutes.
5. Rinse the sensor with water and then return to the soap solution for 2 to 3 minutes.
6. Rinse the sensor with clean water.
Always calibrate the sensor after maintenance procedures.

Troubleshooting

Sensor diagnostic and test menu
The sensor diagnostic and test menu shows current and historical information about the instrument.
Refer to Table 2.
To access the sensor diagnostic and test menu, push the menu key and select SENSOR
SETUP>DIAG/TEST.
Option
MODULE INFORMATION
SENSOR INFORMATION
CAL DAYS
CAL HISTORY
RESET CAL HISTORY
POLARIZATION
SENSOR SIGNALS
FACTORY CAL
DIAG MEAS
Error list
Errors may occur for various reasons. An error icon consists of an exclamation point within a circle.
When an error occurs, the error icon and the measurement screen flash alternately in the main
display. All outputs are held when specified in the controller menu. To view errors, push the menu
key and select DIAGNOSTICS. Then select the device to view any problems associated with that
device.
A list of possible errors is shown in
Table 2 Sensor DIAG/TEST menu
Description
Shows information about the sensor module.
Shows the name and serial number that was entered
by the user.
Shows the number of days since the last calibration.
Shows a list of all calibrations by date/time stamp. Use
the arrows keys to select a calibration and push enter
to view the details.
Resets the calibration history for the sensor (requires
service-level passcode). All previous calibration data is
lost.
Contacting conductivity sensors only. Shows
information about the electrode polarization, the cable
capacitance and the time before the next
measurement.
Shows the current sensor signal information.
Reserved for service technicians only.
Shows diagnostic information about the current
measurement.
Table 3.
English 19