Hach Polymetron 9582sc, Руководство пользователя, Страница: 22 / 28

A list of possible warnings is shown in Table 3 .
Table 3 Warning list for dissolved oxygen sensors
Warning Description Resolution
DO TOO HIGH The measured value is > 40 ppm Make sure that the DO level in the
process water is within the
operating limits of the sensor.
Calibrate or replace the sensor.
DO TOO LOW The measured value is < 0 ppb Calibrate or replace the sensor.
TEMP TOO HIGH The measured temperature is >
50 °C Reduce sample temperature.
TEMP TOO LOW The measured temperature is <
0 °C Increase sample temperature.
CURRENT TOO HIGH The measured current > 200 µA Make sure that the DO level in the
process water is within the
operating limits of the sensor.
Calibrate or replace the sensor.
CURRENT TOO LOW The measured current < -0.5 mA Calibrate or replace the sensor.
CAL OVERDUE The Cal Reminder time has expired Calibrate the sensor.
REPLACE SENSOR The sensor has been in operation >
365 days Replace the sensor cartridge and
calibrate the sensor. If the
calibration result is pass, reset the
membrane days in the DIAG/TEST
menu.
NOT CALIBRATED The sensor has not been calibrated Calibrate the sensor.
CAL IN PROGRESS A calibration was started but not
completed Return to calibration.
9.3.2 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 4 .
Table 4 Error list for dissolved oxygen sensors
Error Description Resolution
ADC FAILURE The analog to digital conversion
failed Power off and power on the
controller. Call technical support.
TEMP SENSOR MISSING The temperature sensor is missing
or disconnected Examine the wiring and connections
for the sensor and for the module.
Make sure that the terminal block is
fully inserted into the module.
Section 10 Replacement parts and accessories
Refer to the replacement parts and accessories section of the controller documentation for controller
parts and accessories.
Note: Product and article numbers may vary for some selling regions. Contact the appropriate distributor or refer to
the company website for contact information.
20 English