Hach LDO, Руководство пользователя

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Section 7 Troubleshooting
7.1 Error Codes
When a sensor is experiencing an error condition, the sensor reading on
the measurement screen will flash and all relays and analog outputs associated with this
sensor will be held. The following conditions will cause the sensor reading to flash: Sensor
calibration, Relay timer washing cycle, Loss of communication.
Highlight the Sensor Diag menu and press
ENTER
. Highlight Errors and press
ENTER
to
determine the cause of the error. Errors are defined in Table 6 .
7.2 Warnings
A Sensor warning will leave all menus, relays, and outputs functioning normally, but will
cause a warning icon to flash on the right side of the display. Highlight the Sensor Diag
menu and press
ENTER
to determine the cause of the warning.
A warning may be used to trigger a relay and users can set warning levels to define the
severity of the warning. Warnings are defined in
Table 7 .
Table 6 Error Codes
Displayed Error Definition Resolution
RED AMPL
LOW
1
Sensor cap not installed or not installed
correctly.
Light path is blocked inside the sensor cap.
Sensor not operating properly.
Remove and reinstall sensor cap.
Check for blockage inside the sensor cap.
Ensure red LED is flashing. Contact the Service
Department.
BLUE AMPL
LOW
Sensor not operating properly.
Contact the Service Department.
Remove and reinstall sensor cap.
Check for blockage inside the sensor cap.
Ensure blue LED is flashing. Contact the Service
Department.
1
To determine the amplitude values:
a. Start from the main menu, highlight Sensor Setup and press
ENTER
.
b. Highlight the correct sensor and press
ENTER
.
c. Highlight Diag/Test and press
ENTER
.
d. Highlight Ampl Diag and press
ENTER
. The Amplitude of the red and blue LEDs are shown. The LEDs transmit light onto the
inner surface of the sensor cap and the light is reflected back down to the detector inside the sensor. The amplitude increases
as more light is reflected. Typical values are from 0.1 to 0.5. The alarm/warning occurs at 0.01/0.03.