Hach 6120118 user manual Error Codes, Troubleshooting the pH or ORP Sensor

Page 35

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.

Table 6 Error Codes

Displayed Error

Definition

Resolution

 

 

 

ADC FAILURE

System measurement fails

Contact Technical Consulting Services.

 

 

 

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 7 Warning Codes

Displayed Warning

Definition

Resolution

 

 

 

PROBE OUT RANGE

Measured pH/ORP exceeds the expected value range.

Contact Technical Consulting Services.

 

 

 

TEMP OUT RANGE

Measured temperature exceeds the expected value

Contact Technical Consulting Services.

range.

 

 

 

 

 

FLASH FAILURE

System flash memory write has failed.

Contact Technical Consulting Services.

 

 

 

REF ELECTRODE

Standard Electrode is not performing within the required

Contact Technical Consulting Services.

specifications.

 

 

 

 

 

7.3 Troubleshooting the pH or ORP Sensor

Clean the sensor using the procedure described in section 6.2 on page 34 and then calibrate the sensor as shown in section 4.7 on page 25 or section 4.8 on page 29. If the measuring system cannot be calibrated after cleaning, contact Technical and Customer Service (U.S.A. only) on page 39.

35

Image 35
Contents Digital PC sc and RC sc ¾-inch Combination pH/ORP Sensor Page Table of Contents Table of Contents Digital Gateway Specifications SpecificationsCombination pH and ORP Sensor Specifications Page Use of Hazard Information Safety InformationPrecautionary Labels General InformationSensor Body Styles General Sensor InformationGeneral Information Digital Gateway Operating PrecautionPage Wiring the sc Sensor to the Digital Gateway Section InstallationProper Wire Preparation and Insertion InstallationWiring the Digital Gateway Cat. No Hard-wiring the Digital Gateway to the sc100 Terminal Number Terminal Designation Wire Color Wiring the Sensor at Terminal Block J5Connecting the Sensor using the Quick-connect Fittings Connecting the Sensor to the sc1000Mounting the Digital Gateway Digital Gateway DimensionsPage Number Key Function Using the sc100 ControllerController Key Functions/Features User Interface and NavigationDisplay User Interface and Navigation Controller Display FeaturesImportant Key Presses User Interface and Navigation Using the sc1000 ControllerDisplay Features Main Menu Navigating the Menu WindowsKeypad Message window List BoxOperation Sensor SetupSensor Diagnostics Menu for pH and ORP PH Sensor Setup MenuOperation ConfigureAC Frequency ORP Sensor Setup MenuTwo Point Automatic Calibration PH CalibrationOne Point Automatic Calibration Two Point Manual Calibration Operation One Point Manual CalibrationOne-point Manual Calibration ORP CalibrationConcurrent Calibration of Two Sensors for pH and ORP Adjusting the Temperature Page Maintenance Schedule MaintenanceMaintenance Cleaning the SensorError Codes TroubleshootingError Codes Troubleshooting the pH or ORP SensorPage Catalog Number Replacement Parts and AccessoriesReplacement Items, Accessories, and Reagent and Standards Item DescriptionPage Information Required How to OrderTechnical and Customer Service U.S.A. only A. CustomersCanada Repair ServiceLimitation of Remedies Limited WarrantyLimitations Page Emissions Product SafetyCompliance Information ImmunityCompliance Information FCC Part 15, Class a LimitsGroup Name Tag Name Register Data Length Description Type Appendix a Modbus Register InformationSensor Modbus Registers Modbus Register Information Where Appendix B General pH InformationPH Measurement Theory General pH Information PID Controller BasicsDerivative IntegralPage Index